{ "bbox": [ 139.58, 35.55, 139.95, 35.83 ], "center": [ 139.7671, 35.6812 ], "country": "Japan", "defaultZoom": 11, "homeCurrency": "JPY", "id": "tokyo", "lines": [ { "cityId": "tokyo", "color": "#FF9500", "displayNumber": "G", "id": "tokyo-line-g", "name": { "en": "Ginza Line" }, "phases": [ { "confidence": "high", "constructionStart": "1925", "cost": { "basis": "outturn", "confidence": "low", "nominal": { "currency": "JPY", "isEstimate": false, "value": 42130000, "year": 1934 }, "notes": "This ¥42.13 million figure is the TOTAL construction cost of the ENTIRE Tokyo Underground Railway line Asakusa–Shimbashi (all 1927–1934 stages combined), NOT this Asakusa–Ueno segment alone. Construction began 27 Sep 1925; initial funding was ¥6.2 million raised toward a ¥35 million initial requirement (per EN Wikipedia / oldtokyo). Promoter Noritsugu Hayakawa originally estimated ~¥20 million was needed. [Citation chase 2026-06-11] The ¥42.13M total rests solely on JA Wikipedia citing the 1960 Teito book 東京地下鉄道丸ノ内線建設史 (上巻, pp.15–17), whose page content could not be read directly (interactive ebook viewer, effectively offline); no independent or primary source in the chase corroborates the figure. For scope: this covers the Tokyo Underground Railway's Asakusa–Shimbashi stretch; the Tokyo Rapid Railway's Shibuya–Shimbashi portion added ~¥21.26M, totaling ~¥63.39M for the complete present-day Ginza Line.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "浅草駅 - 上野駅間：1927年12月30日開業（2.2 km）。東京地下鉄道が建設した浅草駅 - 新橋駅間の建設費用は、総額4,213万円であった。", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260519222108/https://metroarchive.jp/content/ginza.html/", "kind": "primary", "quote": "1927（昭和2）年12月30日 東洋初の地下鉄となる浅草〜上野間2.2kmが営業を開始", "tier": "primary", "title": "銀座線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/ginza.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260328203648/https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line", "kind": "wikipedia", "quote": "Construction began on September 27, 1925 ... The portion between Ueno and Asakusa was completed on December 30, 1927.", "tier": "tertiary", "title": "Tokyo Metro Ginza Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line" } ] }, "geometryRef": "tokyo-G", "id": "tokyo-g-19271230", "kind": "initial", "label": { "en": "Initial section opens: Asakusa → Ueno (Tokyo Underground Railway — Asia's first subway)" }, "notes": "[Date chase 2026-06-12] Precise construction-start date is 1925-09-27 (groundbreaking for Asakusa–Ueno). Japan Times 2017 90th-anniversary article (cited in EN Wikipedia) is paywalled and could not be verified, but is not needed. [Opening-date chase 2026-06-13] Ceremonial opening and VIP/stakeholder test ride were held Dec 29, 1927; public revenue service began Dec 30, 1927 (the curated date).", "opened": "1927-12-30", "segment": { "fromStopIndex": 0, "toStopIndex": 3 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "浅草駅 - 上野駅間：1927年12月30日開業（2.2 km）。東京地下鉄道が建設した浅草駅 - 新橋駅間の建設費用は、総額4,213万円であった。", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260519222108/https://metroarchive.jp/content/ginza.html/", "kind": "primary", "quote": "1927（昭和2）年12月30日 東洋初の地下鉄となる浅草〜上野間2.2kmが営業を開始", "tier": "primary", "title": "銀座線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/ginza.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260328203648/https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line", "kind": "wikipedia", "quote": "Construction began on September 27, 1925 ... The portion between Ueno and Asakusa was completed on December 30, 1927.", "tier": "tertiary", "title": "Tokyo Metro Ginza Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "12月29日：浅草駅 - 上野駅間の開通式および関係者による試乗。12月30日：浅草駅 - 上野駅間（2.2 km）開業", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "high", "geometryRef": "tokyo-G", "id": "tokyo-g-19300101", "kind": "extension", "label": { "en": "Extension: Ueno → Manseibashi (temporary terminus)" }, "opened": "1930-01-01", "segment": { "fromStopIndex": 3, "toStopIndex": 5 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1930年1月1日：上野 - 万世橋駅間開業（1.7 km）", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260328203648/https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line", "kind": "wikipedia", "quote": "On January 1, 1930, the subway was extended by 1.7 km to a temporary station at Manseibashi", "tier": "tertiary", "title": "Tokyo Metro Ginza Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "1930年（昭和5年）1月1日：上野駅 - 万世橋駅間（1.7 km）開業", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 1 }, { "closed": "1931-11-21", "confidence": "high", "geometryRef": "tokyo-G", "id": "tokyo-g-19311121", "kind": "extension", "label": { "en": "Extension: Manseibashi → Kanda (Manseibashi temporary station closed)" }, "opened": "1931-11-21", "segment": { "fromStopIndex": 5, "toStopIndex": 6 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1931年11月21日：万世橋 - 神田間開業（0.5 km）、万世橋駅廃止", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260328203648/https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line", "kind": "wikipedia", "quote": "the subway reached Kanda, 500 meters further south down the line ... Manseibashi ... was abandoned", "tier": "tertiary", "title": "Tokyo Metro Ginza Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "11月21日：万世橋駅 - 神田駅間（0.5 km）開業。万世橋駅は廃止", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "high", "geometryRef": "tokyo-G", "id": "tokyo-g-19320429", "kind": "extension", "label": { "en": "Extension: Kanda → Mitsukoshimae" }, "opened": "1932-04-29", "segment": { "fromStopIndex": 6, "toStopIndex": 7 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1932年4月29日：神田 - 三越前間開業（0.7 km）", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "4月29日：神田 - 三越前間（0.7 km）開業", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "high", "geometryRef": "tokyo-G", "id": "tokyo-g-19321224", "kind": "extension", "label": { "en": "Extension: Mitsukoshimae → Kyobashi" }, "opened": "1932-12-24", "segment": { "fromStopIndex": 7, "toStopIndex": 9 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1932年12月24日：三越前 - 京橋間開業（1.3 km）", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "12月24日：三越前 - 京橋間（1.3 km）開業", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "high", "geometryRef": "tokyo-G", "id": "tokyo-g-19340303", "kind": "extension", "label": { "en": "Extension: Kyobashi → Ginza" }, "opened": "1934-03-03", "segment": { "fromStopIndex": 9, "toStopIndex": 10 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1934年3月3日：京橋 - 銀座間開業（0.7 km）", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "3月3日：京橋駅 - 銀座駅間（0.7 km）開業", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "high", "geometryRef": "tokyo-G", "id": "tokyo-g-19340621", "kind": "extension", "label": { "en": "Extension: Ginza → Shimbashi (Tokyo Underground Railway reaches its original planned terminus)" }, "opened": "1934-06-21", "segment": { "fromStopIndex": 10, "toStopIndex": 11 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1934年6月21日：銀座 - 新橋間開業（0.9 km）", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260328203648/https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line", "kind": "wikipedia", "quote": "the line finally reached its originally planned terminus of Shinbashi on June 21, 1934.", "tier": "tertiary", "title": "Tokyo Metro Ginza Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "6月21日：銀座駅 - 新橋駅間（0.9 km）開業", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "high", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 21260000, "year": 1939 }, "notes": "This ¥21.26 million figure is the TOTAL construction cost of the ENTIRE Tokyo Rapid Railway line Shibuya–Shimbashi (all 1938–1939 stages combined), NOT this Aoyama-rokuchome–Toranomon segment alone. The Tokyo Rapid Railway (predecessor tied to today's Tokyu Corp.) built this western half; it later merged with Tokyo Underground Railway into the Teito Rapid Transit Authority (TRTA/Eidan) in July 1941. [Citation chase 2026-06-11] Basis: this is an actual final (outturn) total construction cost, sourced to the TRTA's 1960 retrospective \"丸ノ内線建設史（上巻）\" via JA Wikipedia; the cited primary volume is offline and could not be directly verified online.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1938年11月18日：青山六丁目（現・表参道）- 虎ノ門間開業（4.4 km）。東京高速鉄道が建設した渋谷駅 - 新橋駅間の建設費用は、総額2,126万円であった。", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260328203648/https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line", "kind": "wikipedia", "quote": "In 1938, a company tied to the predecessor of today's Tokyu Corporation, began service between Aoyama-rokuchome and Toranomon", "tier": "tertiary", "title": "Tokyo Metro Ginza Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line" } ] }, "geometryRef": "tokyo-G", "id": "tokyo-g-19381118", "kind": "extension", "label": { "en": "Tokyo Rapid Railway opens: Aoyama-rokuchome (now Omote-sando) → Toranomon" }, "notes": "[Opening-date chase 2026-06-13] Section opened operating as single-track parallel (単線並列運転) initially.", "opened": "1938-11-18", "segment": { "fromStopIndex": 11, "toStopIndex": 12 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1938年11月18日：青山六丁目（現・表参道）- 虎ノ門間開業（4.4 km）。東京高速鉄道が建設した渋谷駅 - 新橋駅間の建設費用は、総額2,126万円であった。", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260328203648/https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line", "kind": "wikipedia", "quote": "In 1938, a company tied to the predecessor of today's Tokyu Corporation, began service between Aoyama-rokuchome and Toranomon", "tier": "tertiary", "title": "Tokyo Metro Ginza Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "11月18日：青山六丁目駅（現・表参道駅） - 虎ノ門駅間（4.4 km）開業。単線並列運転", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 7 }, { "confidence": "high", "geometryRef": "tokyo-G", "id": "tokyo-g-19381220", "kind": "extension", "label": { "en": "Tokyo Rapid Railway extension: Shibuya → Aoyama-rokuchome" }, "opened": "1938-12-20", "segment": { "fromStopIndex": 12, "toStopIndex": 18 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1938年12月20日：渋谷 - 青山六丁目間開業（1.1 km）", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "12月20日：渋谷駅 - 青山六丁目駅間（1.1 km）開業。赤坂見附駅 - 虎ノ門駅間は単線運転", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "high", "geometryRef": "tokyo-G", "id": "tokyo-g-19390115", "kind": "extension", "label": { "en": "Tokyo Rapid Railway extension: Toranomon → Shimbashi (links to Tokyo Underground Railway at Shimbashi)" }, "notes": "[Opening-date chase 2026-06-13] Tokyo Rapid Railway's Shimbashi station opened separate from (west of) the existing Tokyo Underground Railway Shimbashi; the two merged at through-service start on 1939-09-16.", "opened": "1939-01-15", "segment": { "fromStopIndex": 11, "toStopIndex": 12 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1939年1月15日：虎ノ門 - 新橋間開業（0.7 km）", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260328203648/https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line", "kind": "wikipedia", "quote": "later extended to Shimbashi in 1939", "tier": "tertiary", "title": "Tokyo Metro Ginza Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Ginza_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "1月15日：虎ノ門駅 - 新橋駅間（0.7 km）開業", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "high", "geometryRef": null, "id": "tokyo-g-19390916", "kind": "extension", "label": { "en": "Through-service begins: Tokyo Underground Railway + Tokyo Rapid Railway operate as one line (Asakusa ↔ Shibuya)" }, "notes": "Through-service milestone — the unified Ginza Line; both halves were already built (1934/1939), so this is not a new track opening.", "opened": "1939-09-16", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "1939年9月16日：相互直通運転開始", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260519222108/https://metroarchive.jp/content/ginza.html/", "kind": "primary", "quote": "1939（昭和14）年9月16日 浅草〜渋谷間直通運転開始", "tier": "primary", "title": "銀座線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/ginza.html/" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "other", "publisher": "Wikimedia Foundation", "quote": "1939年（昭和14年）9月16日から、東京地下鉄道との相互乗り入れ運転が開始", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A" } ] } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234412/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E9%8A%80%E5%BA%A7%E7%B7%9A", "kind": "wikipedia", "quote": "浅草駅 - 上野駅間：1927年12月30日開業（2.2 km）。東京地下鉄道が建設した浅草駅 - 新橋駅間の建設費用は、総額4,213万円であった。", "tier": "tertiary", "title": "東京メトロ銀座線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ銀座線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260519222108/https://metroarchive.jp/content/ginza.html/", "kind": "primary", "quote": "1927（昭和2）年12月30日 東洋初の地下鉄となる浅草〜上野間2.2kmが営業を開始", "tier": "primary", "title": "銀座線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/ginza.html/" } ] }, { "cityId": "tokyo", "color": "#F62E36", "displayNumber": "M", "id": "tokyo-line-m", "name": { "en": "Marunouchi Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1951", "geometryRef": "tokyo-M", "id": "tokyo-m-19540120", "kind": "initial", "label": { "en": "Stage 1 opens: Ikebukuro → Ochanomizu (initial section)" }, "notes": "[Date chase 2026-06-12] Construction start 1951 has month-level precision per JA Wikipedia: groundbreaking ceremony 1951-03-30, actual construction start 1951-04-20 (Ikebukuro–Kanda section), citing the official corporate history 帝都高速度交通営団史 (Tokyo Metro 2004, p.569, offline).", "opened": "1954-01-20", "segment": { "fromStopIndex": 19, "toStopIndex": 23 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1954年1月20日：池袋（仮駅）～御茶ノ水間 (6.4 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "1951（昭和26）年4月、工事に着工 … 1954年1月20日 池袋～御茶ノ水 6.4km", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260530011319/https://en.wikipedia.org/wiki/Marunouchi_Line", "kind": "wikipedia", "quote": "between Ikebukuro and Ochanomizu on January 20, 1954", "tier": "tertiary", "title": "Marunouchi Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Marunouchi_Line" } ], "stationCount": 5 }, { "confidence": "medium", "geometryRef": "tokyo-M", "id": "tokyo-m-19560320", "kind": "extension", "label": { "en": "Extension: Ochanomizu → Awajichō" }, "opened": "1956-03-20", "segment": { "fromStopIndex": 18, "toStopIndex": 19 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1956年3月20日：御茶ノ水～淡路町間 (0.8 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "1956年3月20日 御茶ノ水～淡路町 0.8km", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-M", "id": "tokyo-m-19560720", "kind": "extension", "label": { "en": "Extension: Awajichō → Tokyo" }, "opened": "1956-07-20", "segment": { "fromStopIndex": 16, "toStopIndex": 18 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1956年7月20日：淡路町～東京間 (1.4 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "1956年7月20日 淡路町～東京 1.5km", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" } ], "stationCount": 2 }, { "confidence": "medium", "geometryRef": "tokyo-M", "id": "tokyo-m-19571215", "kind": "extension", "label": { "en": "Extension: Tokyo → Nishi-Ginza (now Ginza)" }, "opened": "1957-12-15", "segment": { "fromStopIndex": 15, "toStopIndex": 16 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1957年12月15日：東京～西銀座（銀座）間 (1.1 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "1957年12月15日 東京～西銀座（現：銀座） 1.1km", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" } ], "stationCount": 2 }, { "confidence": "medium", "geometryRef": "tokyo-M", "id": "tokyo-m-19581015", "kind": "extension", "label": { "en": "Extension: Nishi-Ginza (Ginza) → Kasumigaseki" }, "opened": "1958-10-15", "segment": { "fromStopIndex": 14, "toStopIndex": 15 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "1958年10月15日 西銀座～霞ケ関 1.0km", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1958年10月15日：銀座～霞ケ関間 (1.1 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" } ], "stationCount": 2 }, { "confidence": "medium", "cost": { "basis": "outturn", "confidence": "high", "nominal": { "currency": "JPY", "isEstimate": false, "value": 27805000000, "year": 1959 }, "notes": "Total cost of the Marunouchi MAIN LINE (Ikebukuro–Shinjuku, 16.6 km) — not this segment alone: ¥27,805,000,000 (¥278億500万円), of which civil-engineering works ¥15,069,226,000 (¥150億6922万6000円). [Citation chase 2026-06-11] The ¥27,805,000,000 (278億500万円) main-line total is sourced to the official 1960 construction-history book 丸ノ内線建設史（上巻）p.33; the Japanese Wikipedia citation qualifies it as 「予定含む」 (including some planned amounts), so it is a near-final outturn rather than a fully audited figure. The combined Marunouchi + Ogikubo (荻窪線, ¥201億) total of ¥479億 reported by metroarchive is a different, broader scope.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1959年3月15日：霞ケ関～新宿（仮駅）間 (5.8 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "総工事費は479億円（丸ノ内線・荻窪線合計）", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" }, { "accessedAt": "2026-06-11", "archivedUrl": "https://web.archive.org/web/20260303040153/https://metroarchive.jp/content/ebook_marunouchi.html/", "kind": "primary", "publisher": "帝都高速度交通営団 / 公益財団法人メトロ文化財団", "quote": "以来8年の歳月と278億円の巨費を要して、1959(昭和34)年に池袋～新宿間16.6kmが開通しました。", "tier": "primary", "title": "東京地下鉄道丸ノ内線建設史（上巻）— メトロアーカイブ電子書籍 (帝都高速度交通営団, 1960)", "url": "https://metroarchive.jp/content/ebook_marunouchi.html/", "via": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" } ] }, "geometryRef": "tokyo-M", "id": "tokyo-m-19590315", "kind": "extension", "label": { "en": "Extension: Kasumigaseki → Shinjuku (main line Ikebukuro–Shinjuku completed)" }, "opened": "1959-03-15", "segment": { "fromStopIndex": 7, "toStopIndex": 14 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1959年3月15日：霞ケ関～新宿（仮駅）間 (5.8 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "総工事費は479億円（丸ノ内線・荻窪線合計）", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" } ], "stationCount": 4 }, { "confidence": "medium", "cost": { "basis": "outturn", "confidence": "high", "nominal": { "currency": "JPY", "isEstimate": false, "value": 20130500000, "year": 1962 }, "notes": "Total cost of the OGIKUBO LINE + branch (Shinjuku–Ogikubo main + Nakano-sakaue–Hōnanchō branch) — covers all 1961–62 western openings, not this segment alone: ¥20,130,500,000 (¥201億3050万円), of which civil-works ¥10,941,468,000 (¥109億4146万8000円). [Citation chase 2026-06-11] Figure traces to the 1967 official construction-history book 東京地下鉄道荻窪線建設史 (pp.14・93), making it a post-completion actual outturn with a full breakdown (civil ¥10,941,468,000, electrical ¥1,401,905,000, rolling stock ¥4,633,322,000, other ¥3,153,805,000); the primary source's metroarchive.jp landing page corroborates the rounded 201億円 total.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1961年2月8日：荻窪線の新宿 - 新中野間 (3.0 km)・中野坂上 - 中野富士見町間 (1.9 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125741/https://ja.wikipedia.org/wiki/%E4%B8%AD%E9%87%8E%E5%9D%82%E4%B8%8A%E9%A7%85", "kind": "wikipedia", "quote": "1961年2月8日、荻窪線（新宿駅 - 新中野駅間）・分岐線（中野坂上駅 - 中野富士見町駅間）の開業", "tier": "tertiary", "title": "中野坂上駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/中野坂上駅" }, { "accessedAt": "2026-06-11", "archivedUrl": "https://web.archive.org/web/20260210063808/https://metroarchive.jp/content/ebook_ogikubo.html/", "kind": "primary", "publisher": "Metro Cultural Foundation (メトロ文化財団) / 帝都高速度交通営団 (original author)", "quote": "営団地下鉄（現：東京メトロ）は201億円という巨費を投じて新宿から延伸する荻窪線を建設しました。", "tier": "primary", "title": "東京地下鉄道荻窪線建設史 (1967) — Metro Archive digitized edition, landing page", "url": "https://metroarchive.jp/content/ebook_ogikubo.html/", "via": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" } ] }, "geometryRef": "tokyo-M", "id": "tokyo-m-19610208", "kind": "extension", "label": { "en": "Stage opens: Shinjuku → Shin-nakano AND branch Nakano-sakaue → Nakano-fujimichō (Ogikubo Line opens)" }, "opened": "1961-02-08", "segment": { "fromStopIndex": 4, "toStopIndex": 7 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1961年2月8日：荻窪線の新宿 - 新中野間 (3.0 km)・中野坂上 - 中野富士見町間 (1.9 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125741/https://ja.wikipedia.org/wiki/%E4%B8%AD%E9%87%8E%E5%9D%82%E4%B8%8A%E9%A7%85", "kind": "wikipedia", "quote": "1961年2月8日、荻窪線（新宿駅 - 新中野駅間）・分岐線（中野坂上駅 - 中野富士見町駅間）の開業", "tier": "tertiary", "title": "中野坂上駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/中野坂上駅" } ], "stationCount": 4 }, { "confidence": "medium", "geometryRef": "tokyo-M", "id": "tokyo-m-19611101", "kind": "extension", "label": { "en": "Extension: Shin-nakano → Minami-Asagaya (Ogikubo Line)" }, "opened": "1961-11-01", "segment": { "fromStopIndex": 1, "toStopIndex": 4 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1961年11月1日：新中野～南阿佐ケ谷間 (3.1 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260530011319/https://en.wikipedia.org/wiki/Marunouchi_Line", "kind": "wikipedia", "quote": "Shin-Nakano to Minami-Asagaya on November 1, 1961", "tier": "tertiary", "title": "Marunouchi Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Marunouchi_Line" } ], "stationCount": 2 }, { "confidence": "medium", "geometryRef": "tokyo-M", "id": "tokyo-m-19620123", "kind": "extension", "label": { "en": "Extension: Minami-Asagaya → Ogikubo (Ogikubo Line Shinjuku–Ogikubo complete)" }, "opened": "1962-01-23", "segment": { "fromStopIndex": 0, "toStopIndex": 1 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1962年1月23日：南阿佐ケ谷～荻窪間 (1.5 km) 開業、新宿～荻窪間が全通", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "1962年1月23日 南阿佐ケ谷～荻窪 1.5km", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-M#2", "id": "tokyo-m-19620323", "kind": "extension", "label": { "en": "Extension: Nakano-fujimichō → Hōnanchō (branch complete; whole Ogikubo Line opened)" }, "notes": "Hōnanchō branch completion — the branch is a separate spine not in the main-line geometry, so not drawn here.", "opened": "1962-03-23", "segment": { "fromStopIndex": 2, "toStopIndex": 3 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1962年3月23日：中野富士見町～方南町間 (1.3 km) 開業、荻窪線全線開通", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260117143250/https://ja.wikipedia.org/wiki/%E6%96%B9%E5%8D%97%E7%94%BA%E9%A7%85", "kind": "wikipedia", "quote": "方南町駅は1962年3月23日、中野富士見町駅からの延伸により開業", "tier": "tertiary", "title": "方南町駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/方南町駅" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": null, "id": "tokyo-m-19720401", "kind": "renumber", "label": { "en": "Renaming: Ogikubo Line (Shinjuku–Ogikubo + branch) unified under the Marunouchi Line name" }, "notes": "Renaming/unification only — no new track.", "opened": "1972-04-01", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1972年（昭和47年）4月1日：荻窪線を丸ノ内線に名称統一", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" } ] }, { "confidence": "medium", "geometryRef": "tokyo-M", "id": "tokyo-m-19960528", "kind": "extension", "label": { "en": "New infill station opens: Nishi-Shinjuku (between Shinjuku and Nakano-sakaue)" }, "opened": "1996-05-28", "segment": { "fromStopIndex": 6, "toStopIndex": 6 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1996年（平成8年）5月28日：西新宿駅開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" } ], "stationCount": 1 }, { "confidence": "high", "geometryRef": null, "id": "tokyo-m-20190705", "kind": "extension", "label": { "en": "Hōnanchō branch upgraded: 6-car through service Ikebukuro ↔ Hōnanchō begins" }, "notes": "Operational upgrade (6-car through service) — no new track. [Opening-date chase 2026-06-13] Ceremonial commemorative run with the new 2000-series train occurred 2019-07-04; regular 6-car through revenue service Ikebukuro–Honancho began 2019-07-05 (the curated public-service date).", "opened": "2019-07-05", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "2019年（平成31年・令和元年）7月5日：方南町駅のホーム6両化完成に伴い、6両編成での池袋駅 - 方南町駅間の直通運転開始", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20250720125737/https://travel.watch.impress.co.jp/docs/news/1194399.html", "kind": "news", "quote": "丸ノ内線 池袋駅～方南町駅間で6両編成の直通運転開始", "tier": "secondary", "title": "東京メトロ、丸ノ内線 池袋駅～方南町駅間で6両編成の直通運転開始 — トラベル Watch", "url": "https://travel.watch.impress.co.jp/docs/news/1194399.html" } ] }, { "confidence": "medium", "geometryRef": "tokyo-M#2", "id": "tokyo-m-1961-honancho-branch", "kind": "extension", "label": { "en": "Ogikubo Line branch opens: Nakano-sakaue → Nakano-fujimichō (Hōnanchō branch begins)" }, "notes": "The Hōnanchō (Ogikubo Line) branch stub Nakano-sakaue→Nakano-fujimichō, opened with the 1961 Ogikubo Line stage; drawn on the branch sub-spine tokyo-M#2.", "opened": "1961-02-08", "segment": { "fromStopIndex": 0, "toStopIndex": 2 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1961年2月8日：荻窪線の新宿 - 新中野間 (3.0 km)・中野坂上 - 中野富士見町間 (1.9 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125741/https://ja.wikipedia.org/wiki/%E4%B8%AD%E9%87%8E%E5%9D%82%E4%B8%8A%E9%A7%85", "kind": "wikipedia", "quote": "1961年2月8日、荻窪線（新宿駅 - 新中野駅間）・分岐線（中野坂上駅 - 中野富士見町駅間）の開業", "tier": "tertiary", "title": "中野坂上駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/中野坂上駅" } ] } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260428162403/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E4%B8%B8%E3%83%8E%E5%86%85%E7%B7%9A", "kind": "wikipedia", "quote": "1954年1月20日：池袋（仮駅）～御茶ノ水間 (6.4 km) 開業", "tier": "tertiary", "title": "東京メトロ丸ノ内線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ丸ノ内線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125620/https://metroarchive.jp/content/marunouchi.html/", "kind": "primary", "quote": "1951（昭和26）年4月、工事に着工 … 1954年1月20日 池袋～御茶ノ水 6.4km", "tier": "primary", "title": "丸ノ内線の歴史 — メトロアーカイブアルバム (Tokyo Metro)", "url": "https://metroarchive.jp/content/marunouchi.html/" } ] }, { "cityId": "tokyo", "color": "#B5B5AC", "displayNumber": "H", "id": "tokyo-line-h", "name": { "en": "Hibiya Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1959", "geometryRef": "tokyo-H", "id": "tokyo-h-19610328", "kind": "initial", "label": { "en": "Stage 1 opens: Minami-Senju → Naka-okachimachi (initial section)" }, "notes": "[Date chase 2026-06-12] Construction-start day/month available: 1 May 1959 (metroarchive.jp and JA Wikipedia, latter citing 東京地下鉄道日比谷線建設史 p.27).", "opened": "1961-03-28", "segment": { "fromStopIndex": 16, "toStopIndex": 20 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125743/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A", "kind": "wikipedia", "quote": "1961年3月28日：南千住～仲御徒町間が開業", "tier": "tertiary", "title": "東京メトロ日比谷線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251213221315/https://metroarchive.jp/content/hibiya.html/", "kind": "primary", "quote": "1959年5月1日 建設工事に着手 … 1961年3月28日 南千住～仲御徒町（3.7 km）", "tier": "primary", "title": "日比谷線の歴史 — メトロアーカイブアルバム", "url": "https://metroarchive.jp/content/hibiya.html/" } ], "stationCount": 3 }, { "confidence": "medium", "geometryRef": "tokyo-H", "id": "tokyo-h-19620531", "kind": "extension", "label": { "en": "Extension opens: Kita-Senju → Minami-Senju (north) and Naka-okachimachi → Ningyōchō (centre); Tobu Skytree Line through-service begins" }, "opened": "1962-05-31", "segment": { "fromStopIndex": 13, "toStopIndex": 21 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251213221315/https://metroarchive.jp/content/hibiya.html/", "kind": "primary", "quote": "1962年5月31日 北千住～南千住（2.1 km）／仲御徒町～人形町（2.5 km）", "tier": "primary", "title": "日比谷線開通年表 — メトロアーカイブアルバム", "url": "https://metroarchive.jp/content/hibiya.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125743/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A", "kind": "wikipedia", "quote": "1962年5月31日：北千住～南千住、仲御徒町～人形町間が開業。東武直通開始", "tier": "tertiary", "title": "東京メトロ日比谷線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A" } ], "stationCount": 4 }, { "confidence": "medium", "geometryRef": "tokyo-H", "id": "tokyo-h-19630228", "kind": "extension", "label": { "en": "Extension opens: Ningyōchō → Higashi-ginza" }, "opened": "1963-02-28", "segment": { "fromStopIndex": 9, "toStopIndex": 13 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251213221315/https://metroarchive.jp/content/hibiya.html/", "kind": "primary", "quote": "1963年2月28日 人形町～東銀座（3.0 km）", "tier": "primary", "title": "日比谷線開通年表 — メトロアーカイブアルバム", "url": "https://metroarchive.jp/content/hibiya.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125743/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A", "kind": "wikipedia", "quote": "1963年2月28日：人形町～東銀座間が開業", "tier": "tertiary", "title": "東京メトロ日比谷線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "medium", "geometryRef": "tokyo-H", "id": "tokyo-h-19640325", "kind": "extension", "label": { "en": "Extension opens: Kasumigaseki → Ebisu (southern section)" }, "opened": "1964-03-25", "segment": { "fromStopIndex": 1, "toStopIndex": 9 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251213221315/https://metroarchive.jp/content/hibiya.html/", "kind": "primary", "quote": "1964年3月25日 霞ケ関～恵比寿（6.0 km）", "tier": "primary", "title": "日比谷線開通年表 — メトロアーカイブアルバム", "url": "https://metroarchive.jp/content/hibiya.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125743/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A", "kind": "wikipedia", "quote": "1964年3月25日：霞ケ関～恵比寿間が開業", "tier": "tertiary", "title": "東京メトロ日比谷線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A" } ], "stationCount": 6 }, { "confidence": "medium", "geometryRef": "tokyo-H", "id": "tokyo-h-19640722", "kind": "extension", "label": { "en": "Extension opens: Ebisu → Naka-meguro" }, "opened": "1964-07-22", "segment": { "fromStopIndex": 0, "toStopIndex": 1 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251213221315/https://metroarchive.jp/content/hibiya.html/", "kind": "primary", "quote": "1964年7月22日 恵比寿～中目黒（1.0 km）", "tier": "primary", "title": "日比谷線開通年表 — メトロアーカイブアルバム", "url": "https://metroarchive.jp/content/hibiya.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125743/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A", "kind": "wikipedia", "quote": "1964年7月22日：恵比寿～中目黒間が開業", "tier": "tertiary", "title": "東京メトロ日比谷線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "cost": { "basis": "outturn", "confidence": "high", "nominal": { "currency": "JPY", "isEstimate": false, "value": 63560000000, "year": 1966 }, "notes": "Figure is the total construction cost of the ENTIRE 20.3 km Hibiya Line (all stages combined), not this final segment alone — recorded as ¥63.56 billion (635億6,000万円) as of June 1966. Sources note final cost ran to nearly double the original budget ('当初の予算より2倍近くかかり'). [Citation chase 2026-06-11] Confirmed: the Wikipedia 「建設費用」 section states the figure exactly as 635億6,000万円 (as of June 1966), citing the primary construction-history book 東京地下鉄道日比谷線建設史 (1969) pp.14·171–175, and the metroarchive.jp primary source corroborates with a rounded 636億円. This is the final actual (outturn) cost of the whole line, which overran the original budget by nearly 2x.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251213221315/https://metroarchive.jp/content/hibiya.html/", "kind": "primary", "quote": "1964年8月29日 東銀座～霞ケ関（2.0 km）全線開通 … 当初の予算より2倍近くかかり … 全線建設費636億円", "tier": "primary", "title": "日比谷線開通年表 — メトロアーカイブアルバム", "url": "https://metroarchive.jp/content/hibiya.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125743/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A", "kind": "wikipedia", "quote": "1964年8月29日：東銀座～霞ケ関間が開業し全線開通。東急東横線直通開始", "tier": "tertiary", "title": "東京メトロ日比谷線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A" } ] }, "geometryRef": "tokyo-H", "id": "tokyo-h-19640829", "kind": "extension", "label": { "en": "Final section opens: Higashi-ginza → Kasumigaseki (whole line complete); Tokyu Toyoko Line through-service begins" }, "opened": "1964-08-29", "segment": { "fromStopIndex": 6, "toStopIndex": 9 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251213221315/https://metroarchive.jp/content/hibiya.html/", "kind": "primary", "quote": "1964年8月29日 東銀座～霞ケ関（2.0 km）全線開通 … 当初の予算より2倍近くかかり … 全線建設費636億円", "tier": "primary", "title": "日比谷線開通年表 — メトロアーカイブアルバム", "url": "https://metroarchive.jp/content/hibiya.html/" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125743/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A", "kind": "wikipedia", "quote": "1964年8月29日：東銀座～霞ケ関間が開業し全線開通。東急東横線直通開始", "tier": "tertiary", "title": "東京メトロ日比谷線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "high", "constructionStart": "2016", "cost": { "basis": "estimate", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": true, "value": 36000000000, "year": 2020 }, "notes": "Approximately ¥36 billion (約360億円) total project cost for the Toranomon Hills station infill works; project led by UR (Urban Renaissance Agency). Construction work commenced 2016-02-08. [Citation chase 2026-06-11] The ¥36bn figure is a projection (見込む) reported by the trade paper Nikkan Kensetsu Kogyo Shimbun (2020-06-03, archived) and echoed by Japanese Wikipedia; the Tokyo Metro primary press release does not state a cost. It covers the total UR-led station works spanning the 2020 provisional and 2023 full openings.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260307081702/https://www.tokyometro.jp/news/2020/207736.html", "kind": "primary", "quote": "2020年6月6日（土）日比谷線虎ノ門ヒルズ駅 開業", "tier": "primary", "title": "2020年6月6日（土）日比谷線虎ノ門ヒルズ駅 開業 — 東京メトロ", "url": "https://www.tokyometro.jp/news/2020/207736.html" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251127071158/https://ja.wikipedia.org/wiki/%E8%99%8E%E3%83%8E%E9%96%80%E3%83%92%E3%83%AB%E3%82%BA%E9%A7%85", "kind": "wikipedia", "quote": "2016年（平成28年）2月8日：当駅の工事に着手 … 2020年（令和2年）6月6日：暫定開業 … 2023年（令和5年）7月15日：本開業", "tier": "tertiary", "title": "虎ノ門ヒルズ駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E8%99%8E%E3%83%8E%E9%96%80%E3%83%92%E3%83%AB%E3%82%BA%E9%A7%85" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251105040901/https://response.jp/article/2020/06/06/335344.html", "kind": "news", "quote": "全線開通から56年ぶりの新駅「虎ノ門ヒルズ」が開業する", "tier": "secondary", "title": "東京メトロ「虎ノ門ヒルズ」駅開業---日比谷線 95年の歴史を振り返る — Response.jp", "url": "https://response.jp/article/2020/06/06/335344.html" }, { "accessedAt": "2026-06-11", "archivedUrl": "https://web.archive.org/web/20210501070312/https://www.decn.co.jp/?p=114143", "kind": "news", "publisher": "日刊建設工業新聞 (Nikkan Kensetsu Kogyo Shimbun)", "quote": "総工費は約３６０億円を見込んでいる。", "tier": "secondary", "title": "都市機構、東京メトロ／日比谷線・虎ノ門ヒルズ駅公開／56年ぶり新駅、6月6日開業", "url": "https://www.decn.co.jp/?p=114143", "via": "https://ja.wikipedia.org/wiki/%E8%99%8E%E3%83%8E%E9%96%80%E3%83%92%E3%83%AB%E3%82%BA%E9%A7%85" } ] }, "geometryRef": "tokyo-H", "id": "tokyo-h-20200606", "kind": "extension", "label": { "en": "New infill station opens: Toranomon Hills (H06), between Kamiyachō and Kasumigaseki (provisional opening)" }, "notes": "[Date chase 2026-06-12] Construction-start exact date: 8 February 2016 (Tokyo Metro/UR press release pr20160208, cited via JA Wikipedia). PDF returned HTTP 403/paywall at chase time but the Wikipedia citation (date+title 工事着手) is unambiguous. [Opening-date chase 2026-06-13] Toranomon Hills station 2020-06-06 was a provisional opening (暫定開業); full/permanent opening (本開業) followed on 2023-07-15 with the station tower's completion. 2020-06-06 is the correct first public revenue-service date and the curated label already notes it as provisional.", "opened": "2020-06-06", "segment": { "fromStopIndex": 4, "toStopIndex": 4 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260307081702/https://www.tokyometro.jp/news/2020/207736.html", "kind": "primary", "quote": "2020年6月6日（土）日比谷線虎ノ門ヒルズ駅 開業", "tier": "primary", "title": "2020年6月6日（土）日比谷線虎ノ門ヒルズ駅 開業 — 東京メトロ", "url": "https://www.tokyometro.jp/news/2020/207736.html" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251127071158/https://ja.wikipedia.org/wiki/%E8%99%8E%E3%83%8E%E9%96%80%E3%83%92%E3%83%AB%E3%82%BA%E9%A7%85", "kind": "wikipedia", "quote": "2016年（平成28年）2月8日：当駅の工事に着手 … 2020年（令和2年）6月6日：暫定開業 … 2023年（令和5年）7月15日：本開業", "tier": "tertiary", "title": "虎ノ門ヒルズ駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E8%99%8E%E3%83%8E%E9%96%80%E3%83%92%E3%83%AB%E3%82%BA%E9%A7%85" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251105040901/https://response.jp/article/2020/06/06/335344.html", "kind": "news", "quote": "全線開通から56年ぶりの新駅「虎ノ門ヒルズ」が開業する", "tier": "secondary", "title": "東京メトロ「虎ノ門ヒルズ」駅開業---日比谷線 95年の歴史を振り返る — Response.jp", "url": "https://response.jp/article/2020/06/06/335344.html" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20251103204118/https://www.tokyometro.jp/news/images_h/metroNews20160208_g06.pdf", "kind": "primary", "publisher": "都市再生機構／東京地下鉄", "quote": "工事着手について (press release dated 2016-02-08, cited as ref name=\"pr20160208\" in Wikipedia, confirming construction commencement on that date)", "tier": "primary", "title": "東京メトロ日比谷線虎ノ門新駅（仮称）整備にかかる工事着手について", "url": "https://www.tokyometro.jp/news/images_h/metroNews20160208_g06.pdf", "via": "https://ja.wikipedia.org/wiki/%E8%99%8E%E3%83%8E%E9%96%80%E3%83%92%E3%83%AB%E3%82%BA%E9%A7%85" } ], "stationCount": 1 } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125743/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A", "kind": "wikipedia", "quote": "1961年3月28日：南千住～仲御徒町間が開業", "tier": "tertiary", "title": "東京メトロ日比谷線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%97%A5%E6%AF%94%E8%B0%B7%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251213221315/https://metroarchive.jp/content/hibiya.html/", "kind": "primary", "quote": "1959年5月1日 建設工事に着手 … 1961年3月28日 南千住～仲御徒町（3.7 km）", "tier": "primary", "title": "日比谷線の歴史 — メトロアーカイブアルバム", "url": "https://metroarchive.jp/content/hibiya.html/" } ] }, { "cityId": "tokyo", "color": "#009BBF", "displayNumber": "T", "id": "tokyo-line-t", "name": { "en": "Tozai Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1962", "geometryRef": "tokyo-T", "id": "tokyo-t-19641223", "kind": "initial", "label": { "en": "Stage 1 opens: Takadanobaba → Kudanshita (initial Line 5 section)" }, "notes": "[Date chase 2026-06-12] Official construction history (東京地下鉄道東西線建設史 p.76) and the Tokyo Metro Archive both date the construction start to October 1962 (Wikipedia gives the precise date 1962-10-19) for the Takadanobaba–Kudanshita section. [Opening-date chase 2026-06-13] Tokyo Metro official archive (metroarchive.jp) confirms 1964-12-23 as the revenue-service opening of the Takadanobaba–Kudanshita 4.8 km section; the curated quote from that source had only captured the 1962 construction start.", "opened": "1964-12-23", "segment": { "fromStopIndex": 2, "toStopIndex": 6 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "高田馬場 - 九段下間 (4.8 km) 開業", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260314075808/https://metroarchive.jp/content/touzai.html/", "kind": "primary", "quote": "1962（昭和37）年10月、営団は国鉄中央線との相互直通路線（5号線）高田馬場～九段下間の4.8㎞の工事に着手", "tier": "primary", "title": "東西線の歴史 — メトロアーカイブアルバム (Tokyo Metro archive)", "url": "https://metroarchive.jp/content/touzai.html/" } ], "stationCount": 5 }, { "confidence": "medium", "geometryRef": "tokyo-T", "id": "tokyo-t-19660316", "kind": "extension", "label": { "en": "Stage 2 opens: Nakano → Takadanobaba (3.9 km) and Kudanshita → Takebashi (1.0 km)" }, "notes": "[Opening-date chase 2026-06-13] Tokyo Metro official archive confirms 1966-03-16 for both simultaneous sub-segments (Nakano–Takadanobaba 3.9 km and Kudanshita–Takebashi 1.0 km).", "opened": "1966-03-16", "segment": { "fromStopIndex": 0, "toStopIndex": 7 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "中野 - 高田馬場間 (3.9 km)・九段下 - 竹橋間 (1.0 km) 開業", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260314075808/https://metroarchive.jp/content/touzai.html/", "kind": "primary", "quote": "1966年3月16日 | 中野～高田馬場 | 3.9km / 九段下～竹橋 | 1.0km", "tier": "primary", "title": "東西線の歴史 — メトロアーカイブアルバム (Tokyo Metro archive)", "url": "https://metroarchive.jp/content/touzai.html/" } ], "stationCount": 3 }, { "confidence": "medium", "geometryRef": "tokyo-T", "id": "tokyo-t-19661001", "kind": "extension", "label": { "en": "Stage 3 opens: Takebashi → Ōtemachi (1.0 km)" }, "notes": "[Opening-date chase 2026-06-13] Tokyo Metro official archive confirms 1966-10-01 for the Takebashi–Otemachi 1.0 km section.", "opened": "1966-10-01", "segment": { "fromStopIndex": 7, "toStopIndex": 8 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "竹橋 - 大手町間 (1.0 km) 開業", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260314075808/https://metroarchive.jp/content/touzai.html/", "kind": "primary", "quote": "1966年10月1日 | 竹橋～大手町 | 1.0km", "tier": "primary", "title": "東西線の歴史 — メトロアーカイブアルバム (Tokyo Metro archive)", "url": "https://metroarchive.jp/content/touzai.html/" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-T", "id": "tokyo-t-19670914", "kind": "extension", "label": { "en": "Stage 4 opens: Ōtemachi → Tōyōchō (5.1 km)" }, "notes": "[Opening-date chase 2026-06-13] Three independent sources (Tokyo Metro official archive, JA + EN Wikipedia) agree on 1967-09-14 for the Otemachi–Toyocho 5.1 km section.", "opened": "1967-09-14", "segment": { "fromStopIndex": 8, "toStopIndex": 13 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "大手町 - 東陽町間 (5.1 km) 開業", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260613164557/https://en.wikipedia.org/wiki/T%C5%8Dzai_Line_(Tokyo)", "kind": "wikipedia", "quote": "September 14, 1967: Ōtemachi to Tōyōchō opens", "tier": "tertiary", "title": "Tōzai Line (Tokyo) — Wikipedia", "url": "https://en.wikipedia.org/wiki/T%C5%8Dzai_Line_(Tokyo)" } ], "stationCount": 5 }, { "confidence": "medium", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 113650000000, "year": 1971 }, "notes": "Figure is for the ENTIRE Tōzai Line (Nakano–Nishi-Funabashi, all stages combined), not this segment alone: total ¥113.65 billion as of July 1971, comprising ¥73.5bn civil works, ¥7.0bn electrical, ¥14.5bn rolling stock (per JA Wikipedia citing construction record). [Citation chase 2026-06-11] The ultimate source is the official construction-history book 東京地下鉄道東西線建設史 (p.18, 帝都高速度交通営団, 1978), but it is only available as a JS-rendered scanned ebook at metroarchive.jp and could not be directly verified; the figure rests on the single secondary JA Wikipedia citation. The full breakdown is ¥73.55bn civil, ¥7.06bn electrical, ¥14.52bn rolling stock, ¥18.53bn other.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "東陽町 - 西船橋間 (15.0 km) 開業（全線開業）", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "総額は1,136億5,000万円である（1971年7月時点）。土木関係費735億円、電気関係費70億円、車両関係費145億円", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" } ] }, "geometryRef": "tokyo-T", "id": "tokyo-t-19690329", "kind": "extension", "label": { "en": "Stage 5 opens: Tōyōchō → Nishi-Funabashi (15.0 km) — full line complete" }, "notes": "[Opening-date chase 2026-06-13] Tokyo Metro official archive confirms 1969-03-29 for the final Toyocho–Nishi-Funabashi 15.0 km section completing the line; Rapid service also began this date.", "opened": "1969-03-29", "segment": { "fromStopIndex": 13, "toStopIndex": 22 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "東陽町 - 西船橋間 (15.0 km) 開業（全線開業）", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "総額は1,136億5,000万円である（1971年7月時点）。土木関係費735億円、電気関係費70億円、車両関係費145億円", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" } ], "stationCount": 6 }, { "confidence": "medium", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 1289000000, "year": 1979 }, "notes": "Construction cost of Nishi-Kasai Station alone: ¥1,289 million (¥1.289 billion), per JA Wikipedia. Infill station added to existing track to distribute passenger load. [Citation chase 2026-06-11] Figure is an actual (outturn) cost for Nishi-Kasai Station alone, broken down by JA Wikipedia into civil engineering ¥633.761M, building works ¥414.59M, and electrical works ¥240.649M (sum ¥1,289M). The underlying primary citation (Jitsugyo no Nihon Sha pamphlet history, 2014, ISBN 9784408110608, p.122) is print-only and could not be independently verified online.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260425184206/https://ja.wikipedia.org/wiki/%E8%A5%BF%E8%91%9B%E8%A5%BF%E9%A7%85", "kind": "wikipedia", "quote": "1979年（昭和54年）10月1日：開業", "tier": "tertiary", "title": "西葛西駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E8%A5%BF%E8%91%9B%E8%A5%BF%E9%A7%85" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260425184206/https://ja.wikipedia.org/wiki/%E8%A5%BF%E8%91%9B%E8%A5%BF%E9%A7%85", "kind": "wikipedia", "quote": "駅の建設に要した費用は、総額12億8,900万円である", "tier": "tertiary", "title": "西葛西駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E8%A5%BF%E8%91%9B%E8%A5%BF%E9%A7%85" } ] }, "geometryRef": "tokyo-T", "id": "tokyo-t-19791001", "kind": "extension", "label": { "en": "Infill station opens: Nishi-Kasai (between Minami-Sunamachi and Kasai)" }, "opened": "1979-10-01", "segment": { "fromStopIndex": 15, "toStopIndex": 15 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260425184206/https://ja.wikipedia.org/wiki/%E8%A5%BF%E8%91%9B%E8%A5%BF%E9%A7%85", "kind": "wikipedia", "quote": "1979年（昭和54年）10月1日：開業", "tier": "tertiary", "title": "西葛西駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E8%A5%BF%E8%91%9B%E8%A5%BF%E9%A7%85" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260425184206/https://ja.wikipedia.org/wiki/%E8%A5%BF%E8%91%9B%E8%A5%BF%E9%A7%85", "kind": "wikipedia", "quote": "駅の建設に要した費用は、総額12億8,900万円である", "tier": "tertiary", "title": "西葛西駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E8%A5%BF%E8%91%9B%E8%A5%BF%E9%A7%85" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-T", "id": "tokyo-t-19810327", "kind": "extension", "label": { "en": "Infill station opens: Minami-Gyōtoku (between Urayasu and Gyōtoku)" }, "opened": "1981-03-27", "segment": { "fromStopIndex": 18, "toStopIndex": 18 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260425184201/https://ja.wikipedia.org/wiki/%E5%8D%97%E8%A1%8C%E5%BE%B3%E9%A7%85", "kind": "wikipedia", "quote": "1981年（昭和56年）3月27日：開業", "tier": "tertiary", "title": "南行徳駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E5%8D%97%E8%A1%8C%E5%BE%B3%E9%A7%85" } ], "stationCount": 1 }, { "confidence": "medium", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 5660000000, "year": 2000 }, "notes": "Total construction cost of Myōden Station: ¥5,660 million (¥5.66 billion), per JA Wikipedia. First new Tōzai Line station in 19 years; built at the former Shimo-Myōden signal/depot junction site. [Citation chase 2026-06-11] Figure (総工費 / total construction cost) is sourced via JA Wikipedia to 帝都高速度交通営団史 p.241 (Tokyo Metro, 2004), a print-only institutional history that could not be independently verified online; treat as a final out-turn cost backed by a single accessible secondary source.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251231171927/https://ja.wikipedia.org/wiki/%E5%A6%99%E5%85%B8%E9%A7%85", "kind": "wikipedia", "quote": "2000年（平成12年）1月22日：開業。総工費56億6,000万円", "tier": "tertiary", "title": "妙典駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E5%A6%99%E5%85%B8%E9%A7%85" } ] }, "geometryRef": "tokyo-T", "id": "tokyo-t-20000122", "kind": "extension", "label": { "en": "Infill station opens: Myōden (between Gyōtoku and Baraki-Nakayama)" }, "opened": "2000-01-22", "segment": { "fromStopIndex": 20, "toStopIndex": 20 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251231171927/https://ja.wikipedia.org/wiki/%E5%A6%99%E5%85%B8%E9%A7%85", "kind": "wikipedia", "quote": "2000年（平成12年）1月22日：開業。総工費56億6,000万円", "tier": "tertiary", "title": "妙典駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E5%A6%99%E5%85%B8%E9%A7%85" } ], "stationCount": 1 } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061155/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A", "kind": "wikipedia", "quote": "高田馬場 - 九段下間 (4.8 km) 開業", "tier": "tertiary", "title": "東京メトロ東西線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9D%B1%E8%A5%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260314075808/https://metroarchive.jp/content/touzai.html/", "kind": "primary", "quote": "1962（昭和37）年10月、営団は国鉄中央線との相互直通路線（5号線）高田馬場～九段下間の4.8㎞の工事に着手", "tier": "primary", "title": "東西線の歴史 — メトロアーカイブアルバム (Tokyo Metro archive)", "url": "https://metroarchive.jp/content/touzai.html/" } ] }, { "cityId": "tokyo", "color": "#00BB85", "displayNumber": "C", "id": "tokyo-line-c", "name": { "en": "Chiyoda Line" }, "phases": [ { "confidence": "low", "constructionStart": "1966", "geometryRef": "tokyo-C", "id": "tokyo-c-19691220", "kind": "initial", "label": { "en": "Stage 1 opens: Kita-Senju → Ōtemachi (initial section, 9.9 km)" }, "notes": "[Date chase 2026-06-12] Construction began July 30, 1966 on the Kita-Senju–Otemachi section (千代田線建設史 p.39, via EN+JA Wikipedia). Primary source archive metroarchive.jp is image-only and currently dead-link, so confirmation rests on the two Wikipedia citations of it.", "opened": "1969-12-20", "segment": { "fromStopIndex": 9, "toStopIndex": 16 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234201/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%83%E4%BB%A3%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "北千住 - 大手町間 (9.9 km) 開業", "tier": "tertiary", "title": "東京メトロ千代田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ千代田線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201551/https://en.wikipedia.org/wiki/Chiyoda_Line", "kind": "wikipedia", "quote": "The first stretch was opened on December 20, 1969 between Kita-Senju and Ōtemachi.", "tier": "tertiary", "title": "Chiyoda Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Chiyoda_Line" } ] }, { "confidence": "low", "geometryRef": "tokyo-C", "id": "tokyo-c-19710320", "kind": "extension", "label": { "en": "Stage 2 opens: Ōtemachi → Kasumigaseki (2.2 km)" }, "notes": "[Opening-date chase 2026-06-13] JA source specifies the Ōtemachi–Kasumigaseki section entered service at 1pm (午後1時) on the opening day.", "opened": "1971-03-20", "segment": { "fromStopIndex": 6, "toStopIndex": 9 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234201/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%83%E4%BB%A3%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "午後1時に大手町 - 靂ヶ関間 (2.2 km) 開業", "tier": "tertiary", "title": "東京メトロ千代田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ千代田線" } ] }, { "confidence": "low", "geometryRef": "tokyo-C", "id": "tokyo-c-19710420", "kind": "extension", "label": { "en": "Stage 3 opens: Ayase → Kita-Senju (2.6 km; through-service with JNR/JR Joban Line begins)" }, "notes": "[Opening-date chase 2026-06-13] Through-running (相互直通運転) with the JNR Joban Line to Abiko began simultaneously with this opening.", "opened": "1971-04-20", "segment": { "fromStopIndex": 16, "toStopIndex": 17 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234201/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%83%E4%BB%A3%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "綥瀬 - 北千住間 (2.6 km) 開業", "tier": "tertiary", "title": "東京メトロ千代田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ千代田線" } ] }, { "confidence": "low", "geometryRef": "tokyo-C", "id": "tokyo-c-19721020", "kind": "extension", "label": { "en": "Stage 4 opens: Kasumigaseki → Yoyogi-Kōen (6.2 km)" }, "notes": "[Opening-date chase 2026-06-13] EN Wikipedia says 'almost completed by October 10, 1972', but the JA chronology citing the primary source (pp.198-199) clearly states October 20 (10月20日); the curated 1972-10-20 stands.", "opened": "1972-10-20", "segment": { "fromStopIndex": 0, "toStopIndex": 6 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234201/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%83%E4%BB%A3%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "靂ヶ関 - 代々木公園間 (6.2 km) 開業", "tier": "tertiary", "title": "東京メトロ千代田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ千代田線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201551/https://en.wikipedia.org/wiki/Chiyoda_Line", "kind": "wikipedia", "quote": "The line was almost completed by October 10, 1972 when it reached Yoyogi-Kōen.", "tier": "tertiary", "title": "Chiyoda Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Chiyoda_Line" } ] }, { "confidence": "low", "constructionStart": "1972", "geometryRef": "tokyo-C", "id": "tokyo-c-19780331", "kind": "extension", "label": { "en": "Stage 5 opens: Yoyogi-Kōen → Yoyogi-Uehara (1.0 km; full line complete, through-service with Odakyu begins)" }, "notes": "[Date chase 2026-06-12] Construction of the final Yoyogi-Koen–Yoyogi-Uehara section began November 29, 1972; start was delayed by the related Odakyu Line continuous grade-separation plan (千代田線建設史 p.48, via JA Wikipedia). English Wikipedia is silent on this section's construction start. Primary archive metroarchive.jp is image-only / dead-link. [Opening-date chase 2026-06-13] Through-running with the Odakyu Odawara Line to Hon-Atsugi began simultaneously with full-line completion.", "opened": "1978-03-31", "segment": { "fromStopIndex": 0, "toStopIndex": 1 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234201/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%83%E4%BB%A3%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "代々木公園 - 代々木上原間 (1.0 km) 開業、全線完成", "tier": "tertiary", "title": "東京メトロ千代田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ千代田線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201551/https://en.wikipedia.org/wiki/Chiyoda_Line", "kind": "wikipedia", "quote": "the 1 km (0.62 mi) section to Yoyogi-Uehara was not completed until March 31, 1978.", "tier": "tertiary", "title": "Chiyoda Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Chiyoda_Line" } ] }, { "confidence": "low", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 852100000, "year": 1979 }, "notes": "Total construction cost of the Ayase–Kita-Ayase branch (8億5,210万円 = ¥852.1 million). Year inferred from the 1979 opening; JA Wikipedia does not state an explicit price-level year. Covers this branch only, not the main line. [Citation chase 2026-06-11] Figure is an actual outturn cost, sourced via JA Wikipedia to the official construction history 「東京地下鉄道千代田線建設史」 pp.1083–1087 (帝都高速度交通営団, 1983); those specific pages are not digitized online, so the primary figure remains unverified at source though the secondary quote matches verbatim.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234201/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%83%E4%BB%A3%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "綥瀬 - 北綥瀬間に要した建設費用は総額8億5,210万円である", "tier": "tertiary", "title": "東京メトロ千代田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ千代田線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201551/https://en.wikipedia.org/wiki/Chiyoda_Line", "kind": "wikipedia", "quote": "The branch line to Kita-Ayase was opened on December 20, 1979.", "tier": "tertiary", "title": "Chiyoda Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Chiyoda_Line" } ] }, "geometryRef": "tokyo-C", "id": "tokyo-c-19791220", "kind": "extension", "label": { "en": "Kita-Ayase branch opens: Ayase → Kita-Ayase (2.1 km; former depot access line converted for passenger service)" }, "notes": "[Opening-date chase 2026-06-13] This was a conversion of the existing depot access track (回送線/車庫線) to passenger service; opening date 1979-12-20 corroborated by both EN and JA chronology even though the curated JA quote cites cost rather than the date.", "opened": "1979-12-20", "segment": { "fromStopIndex": 1, "toStopIndex": 17 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234201/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%83%E4%BB%A3%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "綥瀬 - 北綥瀬間に要した建設費用は総額8億5,210万円である", "tier": "tertiary", "title": "東京メトロ千代田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ千代田線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201551/https://en.wikipedia.org/wiki/Chiyoda_Line", "kind": "wikipedia", "quote": "The branch line to Kita-Ayase was opened on December 20, 1979.", "tier": "tertiary", "title": "Chiyoda Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Chiyoda_Line" } ], "stationCount": 1 } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260331234201/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%83%E4%BB%A3%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "北千住 - 大手町間 (9.9 km) 開業", "tier": "tertiary", "title": "東京メトロ千代田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ千代田線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201551/https://en.wikipedia.org/wiki/Chiyoda_Line", "kind": "wikipedia", "quote": "The first stretch was opened on December 20, 1969 between Kita-Senju and Ōtemachi.", "tier": "tertiary", "title": "Chiyoda Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Chiyoda_Line" } ] }, { "cityId": "tokyo", "color": "#C1A470", "displayNumber": "Y", "id": "tokyo-line-y", "name": { "en": "Yurakucho Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1970", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 492000000000, "year": 1988 }, "notes": "This figure (¥4,920億 / 492 billion yen) is the TOTAL construction cost of the ENTIRE Wakōshi–Shin-kiba line, NOT this 1974 segment alone. Breakdown per JA Wikipedia: civil engineering ¥2,961.5億; electrical ¥448.3億; rolling stock ¥658.6億; other ¥851.6億. Price-year approximated as line-completion year (1988); JA source does not state a single explicit price-level year. [Citation chase 2026-06-11] Figure confirmed by JA Wikipedia's 建設費用 section, which cites the official TRTA construction history (東京地下鉄道有楽町線建設史, 1996) pp.1214–1219; this retrospective itemized total indicates a final actual (outturn) cost rather than an estimate or budget. The primary source itself (metroarchive.jp ebook viewer) is JS-rendered and could not be independently verified.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260605083424/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A", "kind": "wikipedia", "quote": "1974年（昭和49年）10月30日：池袋 - 銀座一丁目間開業。開業当初の同区間の運賃は80円。7000系5両編成で運行された。", "tier": "tertiary", "title": "東京メトロ有楽町線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ有楽町線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125921/https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)", "kind": "wikipedia", "quote": "The initial section began construction in 1970 and opened for revenue service on 30 October 1974 as the Yūrakuchō Line.", "tier": "tertiary", "title": "Yūrakuchō Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)" } ] }, "geometryRef": "tokyo-Y", "id": "tokyo-y-19741030", "kind": "initial", "label": { "en": "Stage 1 opens: Ikebukuro → Ginza-itchome (initial section)" }, "notes": "[Date chase 2026-06-12] Official Tokyo Metro digital archive (東京地下鉄道有楽町線建設史) confirms civil-engineering work on the first-phase Ikebukuro–Akashi-cho (Shintomicho) section began August 1970; JA Wikipedia cites p.58 with exact date 1970-08-19.", "opened": "1974-10-30", "segment": { "fromStopIndex": 8, "toStopIndex": 18 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260605083424/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A", "kind": "wikipedia", "quote": "1974年（昭和49年）10月30日：池袋 - 銀座一丁目間開業。開業当初の同区間の運賃は80円。7000系5両編成で運行された。", "tier": "tertiary", "title": "東京メトロ有楽町線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ有楽町線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125921/https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)", "kind": "wikipedia", "quote": "The initial section began construction in 1970 and opened for revenue service on 30 October 1974 as the Yūrakuchō Line.", "tier": "tertiary", "title": "Yūrakuchō Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20260226202217/https://metroarchive.jp/content/ebook_yurakucho.html/", "kind": "primary", "publisher": "Tokyo Metro (metroarchive.jp)", "quote": "工事は1970（昭和45）年8月、有楽町線の第1期工事区間となる池袋～明石町（新富町）間の土木工事に着手し", "tier": "primary", "title": "東京地下鉄道有楽町線建設史 (Yurakucho Line Construction History) — Metro Archive", "url": "https://metroarchive.jp/content/ebook_yurakucho.html/", "via": "https://en.wikipedia.org/wiki/Y%C5%ABrakuch%C5%8D_Line_(Tokyo_Metro)" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260317145719/https://metroarchive.jp/content/yurakucho.html/", "kind": "primary", "publisher": "公益財団法人メトロ文化財団 (Metro Culture Foundation)", "quote": "1974（昭和49）年10月30日 池袋～銀座一丁目10.2キロの区間を開業しました", "tier": "primary", "title": "有楽町線の歴史 — メトロアーカイブアルバム (Metro Archive Album)", "url": "https://metroarchive.jp/content/yurakucho.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A" } ], "stationCount": 6 }, { "confidence": "medium", "geometryRef": "tokyo-Y", "id": "tokyo-y-19800327", "kind": "extension", "label": { "en": "Stage 2 opens: Ginza-itchome → Shintomichō (extension)" }, "opened": "1980-03-27", "segment": { "fromStopIndex": 18, "toStopIndex": 19 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260605083424/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A", "kind": "wikipedia", "quote": "1980年（昭和55年）3月27日：銀座一丁目 - 新富町間開業", "tier": "tertiary", "title": "東京メトロ有楽町線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ有楽町線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125921/https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)", "kind": "wikipedia", "quote": "On 27 March 1980, the second section between Ginza-itchōme and Shintomichō section opened.", "tier": "tertiary", "title": "Yūrakuchō Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260317145719/https://metroarchive.jp/content/yurakucho.html/", "kind": "primary", "publisher": "公益財団法人メトロ文化財団 (Metro Culture Foundation)", "quote": "1980（昭和55）年3月27日 銀座一丁目～新富町0.7キロの区間を開業しました", "tier": "primary", "title": "有楽町線の歴史 — メトロアーカイブアルバム (Metro Archive Album)", "url": "https://metroarchive.jp/content/yurakucho.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-Y", "id": "tokyo-y-19830624", "kind": "extension", "label": { "en": "Stage 3 opens: Eidan-narimasu → Ikebukuro (northwest extension)" }, "notes": "[Opening-date chase 2026-06-13] 10-car operation began as a trial run on 1983-06-17, one week before revenue opening on 1983-06-24; the curated date is the revenue-service opening.", "opened": "1983-06-24", "segment": { "fromStopIndex": 1, "toStopIndex": 8 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260605083424/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A", "kind": "wikipedia", "quote": "1983年（昭和58年）6月24日：営団成增（現・地下鉄成增） - 池袋間開業", "tier": "tertiary", "title": "東京メトロ有楽町線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ有楽町線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125921/https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)", "kind": "wikipedia", "quote": "The third section between Eidan-narimasu (now Chikatetsu-narimasu) and Ikebukuro opened on 24 June 1983.", "tier": "tertiary", "title": "Yūrakuchō Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260317145719/https://metroarchive.jp/content/yurakucho.html/", "kind": "primary", "publisher": "公益財団法人メトロ文化財団 (Metro Culture Foundation)", "quote": "1983（昭和58）年6月24日 営団成増（現・地下鉄成増）～池袋9.3キロの区間を開業しました", "tier": "primary", "title": "有楽町線の歴史 — メトロアーカイブアルバム (Metro Archive Album)", "url": "https://metroarchive.jp/content/yurakucho.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A" } ], "stationCount": 5 }, { "confidence": "medium", "geometryRef": "tokyo-Y", "id": "tokyo-y-19870825", "kind": "extension", "label": { "en": "Stage 4 opens: Wakōshi → Eidan-narimasu (through service with Tōbu Tōjō Line begins)" }, "opened": "1987-08-25", "segment": { "fromStopIndex": 0, "toStopIndex": 8 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260605083424/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A", "kind": "wikipedia", "quote": "1987年（昭和62年）8月25日：和光市 - 営団成增（現・地下鉄成增）間開業。東武東上線との相互乗り入れ開始", "tier": "tertiary", "title": "東京メトロ有楽町線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ有楽町線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125921/https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)", "kind": "wikipedia", "quote": "The northwestern extension to Wakōshi opened on 25 August 1987, allowing through service with the Tōbu Tōjō Line.", "tier": "tertiary", "title": "Yūrakuchō Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260317145719/https://metroarchive.jp/content/yurakucho.html/", "kind": "primary", "publisher": "公益財団法人メトロ文化財団 (Metro Culture Foundation)", "quote": "1987（昭和62）年8月25日 和光市～営団成増（現・地下鉄成増）2.2キロの区間を開業しました", "tier": "primary", "title": "有楽町線の歴史 — メトロアーカイブアルバム (Metro Archive Album)", "url": "https://metroarchive.jp/content/yurakucho.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "medium", "geometryRef": "tokyo-Y", "id": "tokyo-y-19880608", "kind": "extension", "label": { "en": "Stage 5 opens: Shintomichō → Shin-kiba (full line completed; adds Tsukishima, Toyosu, Tatsumi)" }, "notes": "[Opening-date chase 2026-06-13] Same-day Kotsu Shimbun (交通新聞) front-page report dated 1988-06-08 corroborates the full-line opening; offline newspaper source, not web-archivable.", "opened": "1988-06-08", "segment": { "fromStopIndex": 19, "toStopIndex": 23 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260605083424/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A", "kind": "wikipedia", "quote": "1988年（昭和63年）6月8日：新富町 - 新木場間開業、全線開業", "tier": "tertiary", "title": "東京メトロ有楽町線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ有楽町線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125921/https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)", "kind": "wikipedia", "quote": "The final section from Shintomichō to Shin-kiba opened on 8 June 1988, completing the current line.", "tier": "tertiary", "title": "Yūrakuchō Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260317145719/https://metroarchive.jp/content/yurakucho.html/", "kind": "primary", "publisher": "公益財団法人メトロ文化財団 (Metro Culture Foundation)", "quote": "1988（昭和63）年6月8日、和光市～新木場間28.3キロ全線が開業しました", "tier": "primary", "title": "有楽町線の歴史 — メトロアーカイブアルバム (Metro Archive Album)", "url": "https://metroarchive.jp/content/yurakucho.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A" } ], "stationCount": 3 } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260605083424/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E6%9C%89%E6%A5%BD%E7%94%BA%E7%B7%9A", "kind": "wikipedia", "quote": "1974年（昭和49年）10月30日：池袋 - 銀座一丁目間開業。開業当初の同区間の運賃は80円。7000系5両編成で運行された。", "tier": "tertiary", "title": "東京メトロ有楽町線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ有楽町線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260611125921/https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)", "kind": "wikipedia", "quote": "The initial section began construction in 1970 and opened for revenue service on 30 October 1974 as the Yūrakuchō Line.", "tier": "tertiary", "title": "Yūrakuchō Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Yurakucho_Line_(Tokyo_Metro)" } ] }, { "cityId": "tokyo", "color": "#8F76D6", "displayNumber": "Z", "id": "tokyo-line-z", "name": { "en": "Hanzomon Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1973", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 254500000000, "year": 1990 }, "notes": "Figure of 2,545 億円 (254.5 billion yen) covers the ENTIRE Shibuya–Suitengūmae section (10.8 km), NOT this segment alone. It is the cumulative outturn cost of construction running from March 1973 to the November 1990 Suitengūmae opening (17+ years); cost inflated by the oil shock. This single figure spans the 1978, 1979, 1982, 1989 and 1990 phases. Construction works on the line began March 1973.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260407010134/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A", "kind": "wikipedia", "quote": "1978年8月1日 渋谷～青山一丁目間 (2.7 km) 開業", "tier": "tertiary", "title": "東京メトロ半蔵門線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260519123057/https://metroarchive.jp/content/ebook_hanzomon.html/", "kind": "primary", "quote": "渋谷～水天宮前区間（10.8キロ）は、1973年3月の工事着手から1990年11月の全線開業まで17年余りの歳月と、2,545億円にのぼる巨額の費用を要しました。", "tier": "primary", "title": "半蔵門線建設史（渋谷～水天宮前）— メトロアーカイブアルバム (Tokyo Metro archive)", "url": "https://metroarchive.jp/content/ebook_hanzomon.html/" } ] }, "geometryRef": "tokyo-Z", "id": "tokyo-z-19780801", "kind": "initial", "label": { "en": "Stage 1 opens: Shibuya → Aoyama-itchōme (initial section, through-service with Tōkyū)" }, "notes": "[Date chase 2026-06-12] Wikipedia specifies the groundbreaking for the Shibuya-Aoyama-itchome segment (the segment opened in this 1978 phase) as 1973-06-04, with the Aoyama-itchome-Nagatacho segment begun 1973-03-01. [Opening-date chase 2026-06-13] Stage 1 opened as revenue service with simultaneous Tōkyū New-Tamagawa/Den-en-toshi through-running; primary Metro archive confirms month (Aug 1978).", "opened": "1978-08-01", "segment": { "fromStopIndex": 0, "toStopIndex": 2 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260407010134/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A", "kind": "wikipedia", "quote": "1978年8月1日 渋谷～青山一丁目間 (2.7 km) 開業", "tier": "tertiary", "title": "東京メトロ半蔵門線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260519123057/https://metroarchive.jp/content/ebook_hanzomon.html/", "kind": "primary", "quote": "渋谷～水天宮前区間（10.8キロ）は、1973年3月の工事着手から1990年11月の全線開業まで17年余りの歳月と、2,545億円にのぼる巨額の費用を要しました。", "tier": "primary", "title": "半蔵門線建設史（渋谷～水天宮前）— メトロアーカイブアルバム (Tokyo Metro archive)", "url": "https://metroarchive.jp/content/ebook_hanzomon.html/" } ], "stationCount": 2 }, { "confidence": "medium", "geometryRef": "tokyo-Z", "id": "tokyo-z-19790921", "kind": "extension", "label": { "en": "Extension: Aoyama-itchōme → Nagatachō (opened single-track)" }, "notes": "[Opening-date chase 2026-06-13] Opened single-track (単線開業) — reduced-capacity but full revenue service from this date, not a ceremonial opening.", "opened": "1979-09-21", "segment": { "fromStopIndex": 2, "toStopIndex": 3 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260407010134/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A", "kind": "wikipedia", "quote": "1979年9月21日 青山一丁目～永田町間 (1.4km) 単線開業", "tier": "tertiary", "title": "東京メトロ半蔵門線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-Z", "id": "tokyo-z-19821209", "kind": "extension", "label": { "en": "Extension: Nagatachō → Hanzōmon" }, "opened": "1982-12-09", "segment": { "fromStopIndex": 3, "toStopIndex": 4 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260407010134/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A", "kind": "wikipedia", "quote": "1982年12月9日 永田町～半蔵門間 (1.0km) 開業", "tier": "tertiary", "title": "東京メトロ半蔵門線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-Z", "id": "tokyo-z-19890126", "kind": "extension", "label": { "en": "Extension: Hanzōmon → Mitsukoshimae (around the Imperial Palace)" }, "notes": "[Opening-date chase 2026-06-13] Same-day 交通新聞 (1989-01-26) headline confirms revenue opening; noted as the first railway extension opened in the Heisei era.", "opened": "1989-01-26", "segment": { "fromStopIndex": 4, "toStopIndex": 8 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260407010134/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A", "kind": "wikipedia", "quote": "1989年1月26日 半蔵門 - 三越前間 (4.4 km) 開業", "tier": "tertiary", "title": "東京メトロ半蔵門線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A" } ], "stationCount": 4 }, { "confidence": "medium", "geometryRef": "tokyo-Z", "id": "tokyo-z-19901128", "kind": "extension", "label": { "en": "Extension: Mitsukoshimae → Suitengūmae" }, "notes": "[Opening-date chase 2026-06-13] Completed the Shibuya–Suitengūmae section (全通); same-day 交通新聞 confirms revenue opening.", "opened": "1990-11-28", "segment": { "fromStopIndex": 8, "toStopIndex": 9 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260407010134/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A", "kind": "wikipedia", "quote": "1990年11月28日 三越前～水天宮前間 (1.3km) 開業", "tier": "tertiary", "title": "東京メトロ半蔵門線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "constructionStart": "1993", "geometryRef": "tokyo-Z", "id": "tokyo-z-20030319", "kind": "extension", "label": { "en": "Extension: Suitengūmae → Oshiage (through-service with Tōbu)" }, "notes": "[Date chase 2026-06-12] Wikipedia gives the precise construction-start date of 1993-12-06 for the Suitengumae-Oshiage extension; the Tokyo Metro archive corroborates December 1993. [Opening-date chase 2026-06-13] Last new section opened by the Eidan (営団); primary archive also confirms Dec-1993 construction start, consistent with curated constructionStart 1993.", "opened": "2003-03-19", "segment": { "fromStopIndex": 9, "toStopIndex": 13 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260407010134/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A", "kind": "wikipedia", "quote": "2003年3月19日 水天宮前 - 押上間 (6.0 km) 開業", "tier": "tertiary", "title": "東京メトロ半蔵門線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260427054508/https://metroarchive.jp/content/ebook_hanzomon_oshiage.html/", "kind": "primary", "quote": "1993年（平成5年）6月に第1種鉄道事業免許を営団が取得し、同年12月には工事が着手され、2003年（平成15年）3月19日開業に至りました。", "tier": "primary", "title": "半蔵門線建設史（水天宮前～押上）— メトロアーカイブアルバム (Tokyo Metro archive)", "url": "https://metroarchive.jp/content/ebook_hanzomon_oshiage.html/" } ], "stationCount": 4 } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260407010134/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A", "kind": "wikipedia", "quote": "1978年8月1日 渋谷～青山一丁目間 (2.7 km) 開業", "tier": "tertiary", "title": "東京メトロ半蔵門線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%8A%E8%94%B5%E9%96%80%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260519123057/https://metroarchive.jp/content/ebook_hanzomon.html/", "kind": "primary", "quote": "渋谷～水天宮前区間（10.8キロ）は、1973年3月の工事着手から1990年11月の全線開業まで17年余りの歳月と、2,545億円にのぼる巨額の費用を要しました。", "tier": "primary", "title": "半蔵門線建設史（渋谷～水天宮前）— メトロアーカイブアルバム (Tokyo Metro archive)", "url": "https://metroarchive.jp/content/ebook_hanzomon.html/" } ] }, { "cityId": "tokyo", "color": "#00AC9B", "displayNumber": "N", "id": "tokyo-line-n", "name": { "en": "Namboku Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1986", "geometryRef": "tokyo-N", "id": "tokyo-n-19911129", "kind": "initial", "label": { "en": "Stage 1 opens: Komagome → Akabane-Iwabuchi (6.3 km)" }, "notes": "[Date chase 2026-06-12] Construction approved 1986-01-21 and commenced 1986-02-01 (Komagome-Iwabuchi-cho section), per operator's official construction history 東京地下鉄道南北線建設史 p.19 and 鉄道ジャーナル通巻414号 p.144 (cited via JA Wikipedia).", "opened": "1991-11-29", "segment": { "fromStopIndex": 0, "toStopIndex": 5 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061202/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A", "kind": "wikipedia", "quote": "駒込 - 赤羽岩淵間 (6.3 km) 開業", "tier": "tertiary", "title": "東京メトロ南北線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251218080706/https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line", "kind": "wikipedia", "quote": "The first segment from Komagome to Akabane-Iwabuchi opened on 29 November 1991.", "tier": "tertiary", "title": "Tokyo Metro Namboku Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20260317153446/https://metroarchive.jp/content/ebook_nanboku.html/", "kind": "primary", "publisher": "帝都高速度交通営団 (Teito Rapid Transit Authority)", "quote": "1986（昭和61）年2月より工事に着手しました (Construction work began in February 1986 [Showa 61])", "tier": "primary", "title": "東京地下鉄道南北線建設史 (Tokyo Metro Namboku Line Construction History)", "url": "https://metroarchive.jp/content/ebook_nanboku.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" } ], "stationCount": 6 }, { "confidence": "low", "geometryRef": "tokyo-N", "id": "tokyo-n-19960326", "kind": "extension", "label": { "en": "Stage 2 opens: Yotsuya → Komagome (7.1 km)" }, "opened": "1996-03-26", "segment": { "fromStopIndex": 5, "toStopIndex": 11 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061202/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A", "kind": "wikipedia", "quote": "四ツ谷 - 駒込間 (7.1 km) 開業", "tier": "tertiary", "title": "東京メトロ南北線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251218080706/https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line", "kind": "wikipedia", "quote": "Upon its extension to Yotsuya in March 1996, the formations were extended to six cars.", "tier": "tertiary", "title": "Tokyo Metro Namboku Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line" } ], "stationCount": 6 }, { "confidence": "medium", "geometryRef": "tokyo-N", "id": "tokyo-n-19970930", "kind": "extension", "label": { "en": "Stage 3 opens: Tameike-Sannō → Yotsuya (2.2 km)" }, "opened": "1997-09-30", "segment": { "fromStopIndex": 11, "toStopIndex": 13 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061202/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A", "kind": "wikipedia", "quote": "溜池山王 - 四ツ谷間 (2.2 km) 開業", "tier": "tertiary", "title": "東京メトロ南北線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251218080706/https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line", "kind": "wikipedia", "quote": "the extension to Tameike-Sannō completed in September 1997", "tier": "tertiary", "title": "Tokyo Metro Namboku Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20010105173300/http://www.tokyometro.go.jp:80/news/97-17.html", "kind": "primary", "publisher": "帝都高速度交通営団 (Tokyo Metro predecessor)", "quote": "平成9年9月30日（火）南北線四ツ谷・溜池山王間 銀座線溜池山王駅が開業いたします (The Namboku Line Yotsuya–Tameike-Sanno section and Ginza Line Tameike-Sanno station will open on Tuesday, September 30, Heisei 9 [1997])", "tier": "primary", "title": "人にやさしい、より便利な地下鉄を目指して 平成9年9月30日（火）南北線四ツ谷・溜池山王間 銀座線溜池山王駅が開業いたします — 営団地下鉄 press release", "url": "http://www.tokyometro.go.jp/news/97-17.html", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "medium", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 596389000000, "year": 2000 }, "notes": "Final outturn for the ENTIRE original Namboku Line (Meguro–Akabane-Iwabuchi, 19 stations), NOT this 5.7 km segment alone. Total ¥596.389 billion includes construction interest but EXCLUDES consumption tax. Breakdown per JA sources: land acquisition ¥38.367bn, civil works ¥332.024bn, rolling stock ¥32.984bn, other ¥193.014bn. Price-year tagged as 2000 (full-line completion); the figure is a cumulative final amount spanning the 1986–2000 build, not a single price-year deflated value. [Citation chase 2026-06-11] Value 「最終的な金額」 (final amount) per 帝都高速度交通営団史 p.521 (Tokyo Metro, Dec 2004); the verifiable confirmation is via JA Wikipedia only, as the cited primary book is offline. A companion source (南北線建設史 p.42) gives ¥560.4bn as of end-March 2001, reflecting an earlier cutoff and partial estimates, not a contradiction.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061202/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A", "kind": "wikipedia", "quote": "本路線の建設費用は総額5,963冄8,900万円である", "tier": "tertiary", "title": "東京メトロ南北線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251218080706/https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line", "kind": "wikipedia", "quote": "the last stretch from Tameike-Sanno to Meguro completed on September 26, 2000, when through service to the Tokyu Meguro Line started.", "tier": "tertiary", "title": "Tokyo Metro Namboku Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line" } ] }, "geometryRef": "tokyo-N", "id": "tokyo-n-20000926", "kind": "extension", "label": { "en": "Stage 4 (final) opens: Meguro → Tameike-Sannō (5.7 km) — full line complete, through service with Tokyu Meguro Line begins" }, "notes": "[Opening-date chase 2026-06-13] Sep 22–25 timetable preview ran the new segment as non-revenue 回送 (deadhead) trains; public revenue opening was Sep 26 (full line complete, through service with Tokyu Meguro Line began).", "opened": "2000-09-26", "segment": { "fromStopIndex": 13, "toStopIndex": 17 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061202/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A", "kind": "wikipedia", "quote": "本路線の建設費用は総額5,963冄8,900万円である", "tier": "tertiary", "title": "東京メトロ南北線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251218080706/https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line", "kind": "wikipedia", "quote": "the last stretch from Tameike-Sanno to Meguro completed on September 26, 2000, when through service to the Tokyu Meguro Line started.", "tier": "tertiary", "title": "Tokyo Metro Namboku Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line" }, { "accessedAt": "2026-06-13", "kind": "primary", "publisher": "帝都高速度交通営団／東京急行電鉄／東京都交通局 (Tokyo Metro predecessor joint press release)", "quote": "平成12年9月26日 営団南北線 溜池山王・目黒間、都営三田線 三田・目黒間開業 東急目黒線との相互直通運転開始 (September 26, Heisei 12 [2000]: Namboku Line Tameike-Sanno–Meguro and Toei Mita Line Mita–Meguro open; mutual through-service with Tokyu Meguro Line begins)", "tier": "primary", "title": "平成12年9月26日 営団南北線 溜池山王・目黒間、都営三田線 三田・目黒間開業 東急目黒線との相互直通運転開始 開業区間の運賃及び相互直通運転に伴う運行形態を決定 — 帝都高速度交通営団 press release", "url": "http://www.tokyometro.go.jp/news/2000-s02.html", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" } ], "stationCount": 5 } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260329061202/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A", "kind": "wikipedia", "quote": "駒込 - 赤羽岩淵間 (6.3 km) 開業", "tier": "tertiary", "title": "東京メトロ南北線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%8D%97%E5%8C%97%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251218080706/https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line", "kind": "wikipedia", "quote": "The first segment from Komagome to Akabane-Iwabuchi opened on 29 November 1991.", "tier": "tertiary", "title": "Tokyo Metro Namboku Line — Wikipedia (EN)", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Namboku_Line" } ] }, { "cityId": "tokyo", "color": "#9C5E31", "displayNumber": "F", "id": "tokyo-line-f", "name": { "en": "Fukutoshin Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1977", "geometryRef": "tokyo-F", "id": "tokyo-f-19941207", "kind": "initial", "label": { "en": "Stage 1 opens: Kotake-Mukaihara → (Shin-Sen) Ikebukuro, as the Yurakucho New Line (quadruple-tracked, separate tracks parallel to Yurakucho Line)" }, "notes": "[Date chase 2026-06-12] Operator-published primary sources corroborate 1977: 東京地下鉄道有楽町線建設史 (Yurakucho Line Construction History, p.67) cited for the 1977-04-08 start of the shared section, and pp.1075–1078 plus 帝都高速度交通営団史 pp.195–196 for the September 1977 approval/commencement. The two JA-Wikipedia statements differ on the within-year date (April 8 timeline vs September prose) but agree on year 1977. [Opening-date chase 2026-06-13] Segment opened as the 'Yurakucho New Line' (有楽町線新線); intermediate Senkawa and Kanamecho platforms were bypassed (passed without stopping) at this opening.", "opened": "1994-12-07", "segment": { "fromStopIndex": 5, "toStopIndex": 8 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "1994年（平成6年）12月7日：小竹向原 - 池袋（新線池袋）間を有楽町線の複々線（有楽町線新線）として開業", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "1977年（昭和52年）9月に小竹向原 - 池袋間を複々線とする工事計画変更認可を受け、同区間の建設工事に着手した", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260307214043/https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line", "kind": "wikipedia", "quote": "A 3.2 km segment from Kotake-Mukaihara to Ikebukuro opened on 7 December 1994 operating as the Yūrakuchō New Line with no intermediate stops.", "tier": "tertiary", "title": "Tokyo Metro Fukutoshin Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20260226202217/https://metroarchive.jp/content/ebook_yurakucho.html/", "kind": "primary", "publisher": "帝都高速度交通営団 (Teito Rapid Transit Authority)", "quote": "Cited as: 東京地下鉄道有楽町線建設史、p.67「小竹一工区 - 西池袋三工区」— referenced for the 1977年4月8日 construction start of the shared Kotake-Mukaihara–Shin-Ikebukuro section.", "tier": "primary", "title": "東京地下鉄道有楽町線建設史 (Tokyo Metro Yurakucho Line Construction History), p.67 「小竹一工区 - 西池袋三工区」", "url": "https://metroarchive.jp/content/ebook_yurakucho.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20260226202217/https://metroarchive.jp/content/ebook_yurakucho.html/", "kind": "primary", "publisher": "帝都高速度交通営団 (Teito Rapid Transit Authority)", "quote": "Cited as: 東京地下鉄道有楽町線建設史、pp.1075–1078 — referenced for the September 1977 construction approval and commencement statement.", "tier": "primary", "title": "東京地下鉄道有楽町線建設史 (Tokyo Metro Yurakucho Line Construction History), pp.1075–1078", "url": "https://metroarchive.jp/content/ebook_yurakucho.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20260226202217/https://metroarchive.jp/content/ebook_yurakucho.html/", "kind": "primary", "publisher": "東京地下鉄 (Tokyo Metro)", "quote": "Cited as: 帝都高速度交通営団史、pp.195–196 — co-cited with Yurakucho-Const1075 for the September 1977 construction commencement of the Kotake-Mukaihara–Ikebukuro section.", "tier": "primary", "title": "帝都高速度交通営団史 (History of the Teito Rapid Transit Authority), pp.195–196", "url": "https://metroarchive.jp/content/ebook_yurakucho.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "high", "constructionStart": "2001", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 240400000000, "year": 2008 }, "notes": "Total construction cost of the Ikebukuro–Shibuya section only, excluding consumption tax (¥240.4 billion). Breakdown: civil works ¥177,351,443,000; electrical ¥24,826,629,000; rolling stock ¥17,080,658,000; other ¥21,141,270,000. Does NOT cover the 1994 Kotake-Mukaihara–Ikebukuro section.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "本路線のうち池袋 - 渋谷間の建設に要した建設費用は総額2,404億円（消費税除く）である", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "2008年6月14日：副都心線 池袋駅 - 渋谷間が開業", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "2001年6月15日に同区間の建設が開始された", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260307214043/https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line", "kind": "wikipedia", "quote": "The central section opened on 14 June 2008. This segment connected the districts of Shinjuku and Shibuya via Zōshigaya, Shinjuku-sanchōme, and Meiji-Jingūmae and officially completed the line.", "tier": "tertiary", "title": "Tokyo Metro Fukutoshin Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line" } ] }, "geometryRef": "tokyo-F", "id": "tokyo-f-20080614", "kind": "extension", "label": { "en": "Stage 2 opens: Ikebukuro → Shibuya — line becomes the Fukutoshin Line in full (via Zoshigaya, Nishi-waseda, Higashi-shinjuku, Shinjuku-sanchome, Kitasando, Meiji-jingumae); bypassed Senkawa & Kanamecho stops also brought into service" }, "notes": "[Date chase 2026-06-12] Operator-published primary source 東京地下鉄道副都心線建設史 (Fukutoshin Line Construction History, Tokyo Metro, 2009, pp.22–31 prose and pp.31·34 timeline) corroborates the 2001-06-15 construction start of the Ikebukuro–Shibuya section. English Wikipedia carries no construction-start year for this phase. [Opening-date chase 2026-06-13] A dedication/departure ceremony was held June 13, 2008 at Shinjuku-sanchome; this was ceremonial. Revenue (public) service began June 14, 2008.", "opened": "2008-06-14", "segment": { "fromStopIndex": 8, "toStopIndex": 15 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "本路線のうち池袋 - 渋谷間の建設に要した建設費用は総額2,404億円（消費税除く）である", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "2008年6月14日：副都心線 池袋駅 - 渋谷間が開業", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "2001年6月15日に同区間の建設が開始された", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260307214043/https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line", "kind": "wikipedia", "quote": "The central section opened on 14 June 2008. This segment connected the districts of Shinjuku and Shibuya via Zōshigaya, Shinjuku-sanchōme, and Meiji-Jingūmae and officially completed the line.", "tier": "tertiary", "title": "Tokyo Metro Fukutoshin Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20260317160341/https://metroarchive.jp/content/ebook_fukutoshin.html/", "kind": "primary", "publisher": "東京地下鉄 (Tokyo Metro)", "quote": "Cited as: 東京地下鉄道副都心線建設史、pp.22–31 (for 2001年6月15日 construction start prose) and pp.31·34 (for 2001年6月15日 timeline entry 建設工事に着手). Published 2009-03-31 by Tokyo Metro.", "tier": "primary", "title": "東京地下鉄道副都心線建設史 (Tokyo Metro Fukutoshin Line Construction History), pp.22–31 and pp.31·34", "url": "https://metroarchive.jp/content/ebook_fukutoshin.html/", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20250214081620/https://www.tokyometro.jp/news/2008/2008-17.html", "kind": "primary", "publisher": "東京地下鉄 (Tokyo Metro)", "quote": "平成20年6月14日（土）副都心線開業 [cited in JA Wikipedia as ref 'pr20080327' for the June 14, 2008 opening; press release title includes '平成20年6月14日（土）副都心線開業']", "tier": "primary", "title": "副都心線・有楽町線のダイヤが決定！ (Fukutoshin Line and Yurakucho Line timetables decided) — Tokyo Metro press release, 27 March 2008", "url": "http://www.tokyometro.jp/news/2008/2008-17.html", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A" } ], "stationCount": 7 }, { "confidence": "high", "geometryRef": null, "id": "tokyo-f-20130316", "kind": "extension", "label": { "en": "Through-service connection: Shibuya terminus linked to Tokyu Toyoko Line / Yokohama Minatomirai Line (no new Metro stations; reciprocal through-running to Motomachi-Chukagai begins)" }, "notes": "Through-running connection to Tōkyū/Minatomirai — no new Metro track. [Opening-date chase 2026-06-13] This phase is a through-service timetable revision (ダイヤ改正) commencing reciprocal through-running with the Tokyu Toyoko / Yokohama Minatomirai Line, not the opening of new Tokyo Metro stations.", "opened": "2013-03-16", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "ダイヤ改正により、東急東横線・横浜高速鉄道みなとみらい線との相互直通運転開始", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260307214043/https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line", "kind": "wikipedia", "quote": "From 16 March 2013, the Tōkyū Tōyoko Line moved to share the line's Shibuya terminus, enabling through services to Motomachi-Chūkagai in Yokohama via the Minatomirai Line.", "tier": "tertiary", "title": "Tokyo Metro Fukutoshin Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260613164526/https://www.mm21railway.co.jp/info/news/uploads/20130122press.pdf", "kind": "primary", "publisher": "横浜高速鉄道株式会社 (Yokohama High Speed Railway Co., Ltd.)", "quote": "平成25年3月16日(土)に予定している東京メトロ副都心線、東武東上線、西武有楽町線・池袋線との相互直通運転開始に合わせて、みなとみらい線のダイヤ改正を実施します。", "tier": "primary", "title": "横浜高速鉄道 記者発表資料 (Yokohama Minatomirai Railway press release), 2013-01-22", "url": "https://www.mm21railway.co.jp/info/news/uploads/20130122press.pdf", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20210830235410/https://www.tokyu.co.jp/file/120724-1.pdf", "kind": "primary", "publisher": "東京急行電鉄 (Tokyu Corporation)", "quote": "[Title of press release as cited in JA Wikipedia: '東急東横線と東京メトロ副都心線 相互直通運転の開始日が2013年3月16日に決定!'; URL returns 404 at original location but is archived]", "tier": "primary", "title": "東急東横線と東京メトロ副都心線 相互直通運転の開始日が2013年3月16日に決定！ — Tokyu press release, 2012-07-24", "url": "https://www.tokyu.co.jp/file/120724-1.pdf", "via": "https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A" } ] } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260606211746/https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E3%83%A1%E3%83%88%E3%83%AD%E5%89%AF%E9%83%BD%E5%BF%83%E7%B7%9A", "kind": "wikipedia", "quote": "1994年（平成6年）12月7日：小竹向原 - 池袋（新線池袋）間を有楽町線の複々線（有楽町線新線）として開業", "tier": "tertiary", "title": "東京メトロ副都心線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/東京メトロ副都心線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260307214043/https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line", "kind": "wikipedia", "quote": "A 3.2 km segment from Kotake-Mukaihara to Ikebukuro opened on 7 December 1994 operating as the Yūrakuchō New Line with no intermediate stops.", "tier": "tertiary", "title": "Tokyo Metro Fukutoshin Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line" } ] }, { "cityId": "tokyo", "color": "#E85298", "displayNumber": "A", "id": "tokyo-line-a", "name": { "en": "Toei Asakusa Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1958", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 82255690000, "year": 1968 }, "notes": "Figure is the total construction cost of the ENTIRE Asakusa Line (Line 1, Oshiage–Nishi-Magome), NOT this opening segment alone. ¥82,255,690,000 (822億5,569万円); main breakdown: track ¥55.34bn, land/rights ¥9.24bn, overhead/interest ¥8.24bn, rolling stock ¥3.33bn. JA Wikipedia gives no explicit price-level year; tagged 1968 as the full-line completion year (cost is cumulative). Construction of Line 1 began 27 Aug 1958 (the 1956 date in EN Wikipedia refers to the 1956 urban-transport council recommendation, not groundbreaking). [Citation chase 2026-06-11] Cost is an outturn (actual final) figure: it is reported with a full cost breakdown in the Tokyo Metropolitan Bureau of Transportation's 1971 construction-history book \"都営地下鉄建設史-1号線-\" (p. 243), cited via JA Wikipedia; that primary source is offline and was not directly verified, and the 1968 price-year remains an unsourced editorial inference.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "8月27日：地下鉄1号線最初の建設工事を開始 ... 都営1号線として押上駅-浅草橋駅間(3.2 km)開業", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "the initial 3.2 km (2.0 mi) segment between Oshiage and Asakusabashi opened on 4 December 1960", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "本路線の建設費用は822億5,569万円である。主な内訳は、線路費が553億4,195万円、用地買収・権利設定費用が92億4,443万円", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA) (cost)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-11", "archivedUrl": "https://web.archive.org/web/20260613164700/https://ndlsearch.ndl.go.jp/books/R100000002-I000000817699", "kind": "primary", "publisher": "東京都交通局 (Tokyo Metropolitan Bureau of Transportation)", "tier": "primary", "title": "都営地下鉄建設史-1号線- (Toei Subway Construction History – Line 1)", "url": "https://ndlsearch.ndl.go.jp/books/R100000002-I000000817699", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ] }, "geometryRef": "tokyo-A", "id": "tokyo-a-19601204", "kind": "initial", "label": { "en": "Stage 1 opens: Oshiage → Asakusabashi (Line 1 initial section, through service with Keisei begins)" }, "notes": "[Date chase 2026-06-12] EN Wikipedia lists an uncited '27 August 1956' construction start that conflicts with the official 1958 date; 1956 was the year of the Urban Transport Council Answer No.1 planning report, not groundbreaking. Toei operator history confirms 1958 license acquisition (prerequisite to construction) and 1960 opening.", "opened": "1960-12-04", "segment": { "fromStopIndex": 14, "toStopIndex": 18 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "8月27日：地下鉄1号線最初の建設工事を開始 ... 都営1号線として押上駅-浅草橋駅間(3.2 km)開業", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "the initial 3.2 km (2.0 mi) segment between Oshiage and Asakusabashi opened on 4 December 1960", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "本路線の建設費用は822億5,569万円である。主な内訳は、線路費が553億4,195万円、用地買収・権利設定費用が92億4,443万円", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA) (cost)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation (Toei)", "quote": "1958年3月1日：1号線（現・浅草線）の免許を取得 … 1960年12月4日：1号線「押上」～「浅草橋」開業、京成線と相互直通運転を開始", "tier": "primary", "title": "交通局のあゆみ（地下鉄）— Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ], "stationCount": 6 }, { "confidence": "medium", "geometryRef": "tokyo-A", "id": "tokyo-a-19620531", "kind": "extension", "label": { "en": "Extension: Asakusabashi → Higashi-Nihombashi (opened as provisional single-track)" }, "notes": "[Opening-date chase 2026-06-13] Opened as provisional single-track (暫定開業) following a ground-subsidence accident; revenue service nonetheless began 1962-05-31.", "opened": "1962-05-31", "segment": { "fromStopIndex": 13, "toStopIndex": 14 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "1962年5月31日：浅草橋駅-東日本橋駅間(0.6 km)開業", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "The line was extended to Higashi Nihonbashi in May 1962", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation", "quote": "1962年05月31日：1号線「浅草橋」～「東日本橋」開業", "tier": "primary", "title": "交通局のあゆみ（地下鉄）— Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-A", "id": "tokyo-a-19620930", "kind": "extension", "label": { "en": "Extension: Higashi-Nihombashi → Ningyōchō" }, "notes": "[Opening-date chase 2026-06-13] Same day the Asakusabashi–Higashi-Nihombashi section was upgraded to full double-track.", "opened": "1962-09-30", "segment": { "fromStopIndex": 12, "toStopIndex": 13 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "1962年9月30日：東日本橋駅-人形町駅間(0.7 km)開業", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "to Ningyocho in September", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation", "quote": "1962年09月30日：1号線「東日本橋」～「人形町」開業", "tier": "primary", "title": "交通局のあゆみ（地下鉄）— Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-A", "id": "tokyo-a-19630228", "kind": "extension", "label": { "en": "Extension: Ningyōchō → Higashi-Ginza" }, "notes": "[Opening-date chase 2026-06-13] After opening, trains reversed at the Shiodome signal box ~0.9 km beyond Higashi-Ginza, which had no turnback facility.", "opened": "1963-02-28", "segment": { "fromStopIndex": 9, "toStopIndex": 12 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "1963年2月28日：人形町駅-東銀座駅間(2.4 km)開業", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "to Higashi Ginza in February 1963", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation", "quote": "1963年02月28日：1号線「人形町」～「東銀座」開業", "tier": "primary", "title": "交通局のあゆみ（地下鉄）— Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "medium", "geometryRef": "tokyo-A", "id": "tokyo-a-19631212", "kind": "extension", "label": { "en": "Extension: Higashi-Ginza → Shimbashi" }, "notes": "[Opening-date chase 2026-06-13] On this date the former Shiodome signal box turnback point was upgraded to a full station (Shimbashi).", "opened": "1963-12-12", "segment": { "fromStopIndex": 8, "toStopIndex": 9 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "1963年12月12日：東銀座駅-新橋駅間(0.9 km)開業", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "to Shimbashi in December", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation", "quote": "1963年12月12日：1号線「東銀座」～「新橋」開業", "tier": "primary", "title": "交通局のあゆみ（地下鉄）— Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-A", "id": "tokyo-a-19641001", "kind": "extension", "label": { "en": "Extension: Shimbashi → Daimon (opened as provisional single-track)" }, "notes": "[Opening-date chase 2026-06-13] Opened as provisional single-track 9 days before the Tokyo Olympics; about half of trains turned back at Shimbashi. Full double-track restored 1968-06-15.", "opened": "1964-10-01", "segment": { "fromStopIndex": 7, "toStopIndex": 8 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "1964年10月1日：新橋駅-大門駅間(1.1 km)開業", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "to Daimon in October 1964", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation", "quote": "1964年10月01日：1号線「新橋」～「大門」開業", "tier": "primary", "title": "交通局のあゆみ（地下鉄）— Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ], "stationCount": 1 }, { "confidence": "medium", "geometryRef": "tokyo-A", "id": "tokyo-a-19680621", "kind": "extension", "label": { "en": "Extension: Daimon → Sengakuji (through service with Keikyū / Keihin Kyuko begins)" }, "notes": "[Opening-date chase 2026-06-13] Opening ceremony (開通式) held 1968-06-20 per a Yomiuri Shimbun article; revenue service began 1968-06-21. Through service with Keikyū began the same day.", "opened": "1968-06-21", "segment": { "fromStopIndex": 5, "toStopIndex": 7 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "1968年6月21日：大門駅-泉岳寺駅間(2.6 km)開業、京浜急行との相互直通運転開始", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "Daimon to Sengakuji (Through service with Keikyū begins) ... June 1968", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation", "quote": "1968年06月21日：1号線「大門」～「泉岳寺」開業、京浜急行線と相互直通運転を開始", "tier": "primary", "title": "交通局のあゆみ（地下鉄）— Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "medium", "geometryRef": "tokyo-A", "id": "tokyo-a-19681115", "kind": "extension", "label": { "en": "Final extension: Sengakuji → Nishi-Magome (full line completed)" }, "opened": "1968-11-15", "segment": { "fromStopIndex": 0, "toStopIndex": 5 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "1968年11月15日：泉岳寺駅-西馬込駅間(6.9 km)開業。全線開通", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "Sengakuji to Nishi-Magome ... 15 November 1968", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation", "quote": "1968年11月15日：1号線「泉岳寺」～「西馬込」開業", "tier": "primary", "title": "交通局のあゆみ（地下鉄）— Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" } ], "stationCount": 5 }, { "confidence": "low", "geometryRef": null, "id": "tokyo-a-19780701", "kind": "renumber", "label": { "en": "Renamed: Line 1 → Toei Asakusa Line (line naming, no new track)" }, "notes": "Line renaming (Toei Line 1 → Asakusa Line) — no new track. [Opening-date chase 2026-06-13] Administrative renaming only (都営1号線 → 都営浅草線); no new track or stations opened on this date.", "opened": "1978-07-01", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "1978年7月1日：都営1号線から都営浅草線に改称", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "The line was named Asakusa Line on 1 July 1978", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" } ] } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260401001050/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A", "kind": "wikipedia", "quote": "8月27日：地下鉄1号線最初の建設工事を開始 ... 都営1号線として押上駅-浅草橋駅間(3.2 km)開業", "tier": "tertiary", "title": "都営地下鉄浅草線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%B5%85%E8%8D%89%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201644/https://en.wikipedia.org/wiki/Toei_Asakusa_Line", "kind": "wikipedia", "quote": "the initial 3.2 km (2.0 mi) segment between Oshiage and Asakusabashi opened on 4 December 1960", "tier": "tertiary", "title": "Toei Asakusa Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Asakusa_Line" } ] }, { "cityId": "tokyo", "color": "#0079C2", "displayNumber": "I", "id": "tokyo-line-i", "name": { "en": "Toei Mita Line" }, "phases": [ { "confidence": "low", "constructionStart": "1965", "geometryRef": "tokyo-I", "id": "tokyo-i-19681227", "kind": "initial", "label": { "en": "Stage 1 opens: Sugamo → Shimura (now Takashimadaira) (as Toei Line 6)" }, "notes": "[Date chase 2026-06-12] Japanese Wikipedia chronology gives a precise construction-start date of 11 December 1965 ('都営6号線建設工事開始'), confirming the curated 1965 year. The entry carries no inline citation in the wikitext.", "opened": "1968-12-27", "segment": { "fromStopIndex": 6, "toStopIndex": 12 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260504133820/https://en.wikipedia.org/wiki/Toei_Mita_Line", "kind": "wikipedia", "quote": "The first segment of the line opened on 27 December 1968, between Sugamo and Takashimadaira (10.4 km).", "tier": "tertiary", "title": "Toei Mita Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Mita_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260512085054/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "1968年（昭和43年）12月27日に都営6号線として巣鴨 - 志村（現・高島平）間 (10.4 km) が開業", "tier": "tertiary", "title": "都営地下鉄三田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260203001850/https://ja.wikipedia.org/wiki/%E8%A5%BF%E5%8F%B0%E9%A7%85", "kind": "wikipedia", "quote": "西台駅（Nishi-dai Station）opened on December 27, 1968 as part of the opening of the Bureau of Transportation's Line 6", "tier": "tertiary", "title": "西台駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E8%A5%BF%E5%8F%B0%E9%A7%85" } ], "stationCount": 11 }, { "confidence": "low", "geometryRef": "tokyo-I", "id": "tokyo-i-19720630", "kind": "extension", "label": { "en": "Extension opens: Hibiya → Sugamo" }, "opened": "1972-06-30", "segment": { "fromStopIndex": 12, "toStopIndex": 19 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260504133820/https://en.wikipedia.org/wiki/Toei_Mita_Line", "kind": "wikipedia", "quote": "The line was extended a further 7.3 km south to Hibiya on 30 June 1972.", "tier": "tertiary", "title": "Toei Mita Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Mita_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260512085054/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "1972年（昭和47年）6月30日：日比谷駅 - 巣鴨間 (7.3 km)", "tier": "tertiary", "title": "都営地下鉄三田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A" } ], "stationCount": 7 }, { "confidence": "low", "geometryRef": "tokyo-I", "id": "tokyo-i-19731127", "kind": "extension", "label": { "en": "Extension opens: Mita → Hibiya" }, "opened": "1973-11-27", "segment": { "fromStopIndex": 19, "toStopIndex": 23 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260504133820/https://en.wikipedia.org/wiki/Toei_Mita_Line", "kind": "wikipedia", "quote": "The line was extended 3.3 km further south to Mita on 27 November 1973.", "tier": "tertiary", "title": "Toei Mita Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Mita_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260512085054/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "1973年（昭和48年）11月27日：三田駅 - 日比谷間 (3.3 km)", "tier": "tertiary", "title": "都営地下鉄三田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%b6%E5%9c%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A" } ], "stationCount": 4 }, { "confidence": "low", "geometryRef": "tokyo-I", "id": "tokyo-i-19760506", "kind": "extension", "label": { "en": "Northern extension opens: Takashimadaira → Nishi-Takashimadaira" }, "notes": "[Opening-date chase 2026-06-13] Minor distance discrepancy across sources: EN Wikipedia 1.3 km vs JA Wikipedia 1.5 km; opening date is unaffected.", "opened": "1976-05-06", "segment": { "fromStopIndex": 2, "toStopIndex": 6 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260504133820/https://en.wikipedia.org/wiki/Toei_Mita_Line", "kind": "wikipedia", "quote": "The northern 1.3 km extension was completed on 6 May 1976.", "tier": "tertiary", "title": "Toei Mita Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Mita_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251126003510/https://ja.wikipedia.org/wiki/%E6%96%B0%E9%AB%98%E5%B3%B6%E5%B9%B3%E9%A7%85", "kind": "wikipedia", "quote": "新高島平駅 (Shin-Takashimadaira Station) opened on May 6, 1976 as an extension of Line 6", "tier": "tertiary", "title": "新高島平駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E6%96%B0%E9%AB%98%E5%B3%B6%E5%B9%B3%E9%A7%85" } ], "stationCount": 2 }, { "confidence": "low", "geometryRef": "tokyo-I", "id": "tokyo-i-19780701", "kind": "renumber", "label": { "en": "Renamed: Toei Line 6 → Toei Mita Line" }, "notes": "[Opening-date chase 2026-06-13] Phase is a rename event, not a revenue-service opening; date confirmed by primary Toei source.", "opened": "1978-07-01", "segment": { "fromStopIndex": 0, "toStopIndex": 2 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260512085054/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "1978年7月1日：都営6号線を三田線に改称", "tier": "tertiary", "title": "都営地下鉄三田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A" } ] }, { "confidence": "medium", "constructionStart": "1992", "geometryRef": "tokyo-I", "id": "tokyo-i-20000926", "kind": "extension", "label": { "en": "Southern extension opens: Meguro → Mita (with through-service to Tokyu Meguro Line)" }, "notes": "[Date chase 2026-06-12] Construction start of 17 July 1992 for the Mita–Seishōkō-mae (now Shirokane-Takanawa) southern extension is given twice on Japanese Wikipedia (chronology + dedicated 建設経緯 section), both citing the Tokyo Metropolitan Bureau of Transportation 90th-anniversary history (東京都交通局90年史, offline primary). Confirms the curated 1992 year. [Opening-date chase 2026-06-13] Chase clarified a timeline trap: a timetable change and one-person operation began 2000-09-22, but the Mita–Meguro segment was explicitly non-revenue (非営業扱い) until the official public opening on 2000-09-26 — the curated date is the revenue date, not the earlier one.", "opened": "2000-09-26", "segment": { "fromStopIndex": 1, "toStopIndex": 23 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260504133820/https://en.wikipedia.org/wiki/Toei_Mita_Line", "kind": "wikipedia", "quote": "On 26 September 2000, the final 4 km segment from Mita to Meguro opened, and through service to the Meguro Line of Tokyu began at the same time.", "tier": "tertiary", "title": "Toei Mita Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Mita_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251220000406/https://ja.wikipedia.org/wiki/%E7%99%BD%E9%87%91%E9%AB%98%E8%BC%AA%E9%A7%85", "kind": "wikipedia", "quote": "2000年9月26日に三田駅～目黒駅間（4.0 km）が開業し、全線が開業した。この同じ日に、東急目黒線と相互直通運転を開始した", "tier": "tertiary", "title": "白金高輪駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E7%99%BD%E9%87%91%E9%AB%98%E8%BC%AA%E9%A7%85" }, { "accessedAt": "2026-06-12", "archivedUrl": "https://web.archive.org/web/20260512085054/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A", "kind": "other", "publisher": "Wikipedia (Japanese)", "quote": "* [[1992年]]（平成4年）[[7月17日]]：三田 - 清正公前間の建設工事に着手。 … 各種手続きを経た、[[1992年]]（平成4年）[[7月17日]]に延伸区間の建設工事に着手した。", "tier": "secondary", "title": "都営地下鉄三田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A" } ], "stationCount": 3 } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260504133820/https://en.wikipedia.org/wiki/Toei_Mita_Line", "kind": "wikipedia", "quote": "The first segment of the line opened on 27 December 1968, between Sugamo and Takashimadaira (10.4 km).", "tier": "tertiary", "title": "Toei Mita Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Mita_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260512085054/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A", "kind": "wikipedia", "quote": "1968年（昭和43年）12月27日に都営6号線として巣鴨 - 志村（現・高島平）間 (10.4 km) が開業", "tier": "tertiary", "title": "都営地下鉄三田線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E4%B8%89%E7%94%B0%E7%B7%9A" } ] }, { "cityId": "tokyo", "color": "#6CBB5A", "displayNumber": "S", "id": "tokyo-line-s", "name": { "en": "Toei Shinjuku Line" }, "phases": [ { "confidence": "low", "constructionStart": "1971", "geometryRef": "tokyo-S", "id": "tokyo-s-19781221", "kind": "initial", "label": { "en": "Stage 1 opens: Iwamotochō → Higashi-ōjima (initial section)" }, "notes": "[Date chase 2026-06-12] Construction-start corroborated as specifically 1 May 1971 (森下・住吉 area) by both JA and EN Wikipedia. Caveat: only Wikipedia sources available; JA entry has no inline ref and the EN passage sits in an {{Unreferenced section}}; no non-Wikipedia primary/news source was accessible online for the construction-start fact. [Opening-date chase 2026-06-13] Revenue-service opening corroborated by contemporaneous 交通新聞 (Kotsu Shimbun) report dated 1978-12-20 cited in JA Wikipedia wikitext.", "opened": "1978-12-21", "segment": { "fromStopIndex": 5, "toStopIndex": 13 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "岩本町 - 東大島間 (6.8 km) 開業", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201659/https://en.wikipedia.org/wiki/Toei_Shinjuku_Line", "kind": "wikipedia", "quote": "December 21, 1978: Iwamotochō–Higashi-ōjima section opened (7 stations added)", "tier": "tertiary", "title": "Toei Shinjuku Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Shinjuku_Line" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "森下・住吉付近で最初の建設工事に着手", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA), construction start", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" } ], "stationCount": 7 }, { "confidence": "low", "geometryRef": "tokyo-S", "id": "tokyo-s-19800316", "kind": "extension", "label": { "en": "Stage 2 opens: Shinjuku → Iwamotochō (Keiō through-service begins)" }, "opened": "1980-03-16", "segment": { "fromStopIndex": 13, "toStopIndex": 19 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "新宿 - 岩本町間 (7.3 km) 開業", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "京王帝都電鉄（現：京王電鉄）と、1978年10月31日に供用を開始していた京王新線を経由し相互直通運転開始", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA), through service", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201659/https://en.wikipedia.org/wiki/Toei_Shinjuku_Line", "kind": "wikipedia", "quote": "March 16, 1980: Shinjuku–Iwamotochō section opened; through service to Keiō lines began (3 stations added)", "tier": "tertiary", "title": "Toei Shinjuku Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Shinjuku_Line" } ], "stationCount": 3 }, { "confidence": "low", "geometryRef": "tokyo-S", "id": "tokyo-s-19831223", "kind": "extension", "label": { "en": "Stage 3 opens: Higashi-ōjima → Funabori" }, "opened": "1983-12-23", "segment": { "fromStopIndex": 4, "toStopIndex": 5 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "東大島 - 船堀間 (1.7 km) 開業", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201659/https://en.wikipedia.org/wiki/Toei_Shinjuku_Line", "kind": "wikipedia", "quote": "December 23, 1983: Higashi-ōjima–Funabori section opened (2 stations added)", "tier": "tertiary", "title": "Toei Shinjuku Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Shinjuku_Line" } ], "stationCount": 1 }, { "confidence": "low", "geometryRef": "tokyo-S", "id": "tokyo-s-19860914", "kind": "extension", "label": { "en": "Stage 4 opens: Funabori → Shinozaki" }, "opened": "1986-09-14", "segment": { "fromStopIndex": 1, "toStopIndex": 4 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "船堀 - 篠崎間 (4.9 km) 開業", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201659/https://en.wikipedia.org/wiki/Toei_Shinjuku_Line", "kind": "wikipedia", "quote": "September 14, 1986: Funabori–Shinozaki section opened (2 stations added)", "tier": "tertiary", "title": "Toei Shinjuku Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Shinjuku_Line" } ], "stationCount": 3 }, { "confidence": "low", "geometryRef": "tokyo-S", "id": "tokyo-s-19890319", "kind": "extension", "label": { "en": "Stage 5 opens: Shinozaki → Motoyawata (line fully through, temporary terminus)" }, "notes": "[Opening-date chase 2026-06-13] This opening completed the line through to Motoyawata, but Motoyawata opened as a TEMPORARY station only; the permanent station is the subsequent 1991-09-01 phase.", "opened": "1989-03-19", "segment": { "fromStopIndex": 0, "toStopIndex": 1 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "篠崎 - 本八幡間 (2.8 km) 開業（全線開通）", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201659/https://en.wikipedia.org/wiki/Toei_Shinjuku_Line", "kind": "wikipedia", "quote": "March 19, 1989: Shinozaki–Motoyawata section opened (1 station added)", "tier": "tertiary", "title": "Toei Shinjuku Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Shinjuku_Line" } ], "stationCount": 1 }, { "confidence": "low", "geometryRef": null, "id": "tokyo-s-19910901", "kind": "reopening", "label": { "en": "Motoyawata permanent (underground) terminus station opens, replacing temporary terminus" }, "notes": "Permanent Motoyawata terminus replacing the 1989 temporary one — already drawn; not a new opening. [Opening-date chase 2026-06-13] Motoyawata permanent underground station opened 1991-09-01, replacing the 1989 temporary terminus; Keiō through-service was extended to Motoyawata at the same time. Distinct revenue-service milestone, correctly modeled as a separate phase.", "opened": "1991-09-01", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "本八幡駅（本設駅）開業", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" } ] } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260610140525/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A", "kind": "wikipedia", "quote": "岩本町 - 東大島間 (6.8 km) 開業", "tier": "tertiary", "title": "都営地下鉄新宿線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E6%96%B0%E5%AE%BF%E7%B7%9A" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260513201659/https://en.wikipedia.org/wiki/Toei_Shinjuku_Line", "kind": "wikipedia", "quote": "December 21, 1978: Iwamotochō–Higashi-ōjima section opened (7 stations added)", "tier": "tertiary", "title": "Toei Shinjuku Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_Shinjuku_Line" } ] }, { "cityId": "tokyo", "color": "#B6007A", "displayNumber": "E", "id": "tokyo-line-e", "name": { "en": "Toei Oedo Line" }, "phases": [ { "confidence": "medium", "constructionStart": "1986", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 399100000000, "year": 2000 }, "notes": "Figure is the final construction cost of the ENTIRE radial section (放射部, Hikarigaoka–Tochomae, opened in stages 1991–1997), NOT this 1991 segment alone: ¥399.1 billion. The loop section (環状部) cost a further ¥958.3 billion, for a whole-line total of ¥1,357.4 billion (¥1.3574 trillion). These are nominal final-outturn yen accumulated over the build (price-level ~2000, not inflation-adjusted to a single base year, which JA Wikipedia does not state). Whole line was originally budgeted at ~¥682.6 billion. [Citation chase 2026-06-11] The ¥399.1B radial-section figure traces solely to an offline 2015 book (大江戸線建設物語, Seizando-Shoten, pp. 20-21) and could not be independently verified online; the only retrievable official primary source (Tokyo Metropolitan Bureau of Transportation post-project evaluation PDF) confirms only the loop section at ¥988.6 billion in FY1999 prices.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "1991年（平成3年）12月10日：都営12号線として光が丘駅 - 練馬駅間が開業。建設開始は1986年6月1日。", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "放射部で3,991億円、環状部で9,583億円、全線では1儓6,574億円（記2了4キロあたり放射部286億円、環状部323億円）", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260410233702/https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line", "kind": "wikipedia", "quote": "the first segment from Hikarigaoka to Nerima began operations on 10 December 1991 ... Construction began on June 1, 1986", "tier": "tertiary", "title": "Toei Ōedo Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line" }, { "accessedAt": "2026-06-11", "archivedUrl": "https://web.archive.org/web/20211019132858/https://web.archive.org/web/20060517042836/http://www.kotsu.metro.tokyo.jp/news/pdf/sub_t_20060324a_01.pdf", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation (東京都交通局)", "quote": "総事業費 9,886 億円 … 想定値(免許申請時) 6,826 億円（昭和 62 年度単価）… 実績値 9,886 億円（平成 11 年度単価）", "tier": "primary", "title": "都営12号線（大江戸線）環状部事業の評価（総括表） [Post-project evaluation summary: Toei Line 12 (Oedo Line) loop-section project]", "url": "https://web.archive.org/web/20060517042836/http://www.kotsu.metro.tokyo.jp/news/pdf/sub_t_20060324a_01.pdf", "via": "https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line" } ] }, "geometryRef": "tokyo-E", "id": "tokyo-e-19911210", "kind": "initial", "label": { "en": "Stage 1 opens: Hikarigaoka → Nerima (radial branch, as Toei Line 12)" }, "notes": "[Date chase 2026-06-12] Construction start 1986-06-01 (Hikarigaoka-Nerima) confirmed by JA Wikipedia citing primary operator history 大江戸線放射部建設史 p.5; corroborated by EN Wikipedia. Year 1986 supported.", "opened": "1991-12-10", "segment": { "fromStopIndex": 0, "toStopIndex": 2 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "1991年（平成3年）12月10日：都営12号線として光が丘駅 - 練馬駅間が開業。建設開始は1986年6月1日。", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "放射部で3,991億円、環状部で9,583億円、全線では1儓6,574億円（記2了4キロあたり放射部286億円、環状部323億円）", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260410233702/https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line", "kind": "wikipedia", "quote": "the first segment from Hikarigaoka to Nerima began operations on 10 December 1991 ... Construction began on June 1, 1986", "tier": "tertiary", "title": "Toei Ōedo Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation (Toei)", "quote": "1991年12月10日 — 12号線（現・大江戸線）「練馬」～「光が丘」開業", "tier": "primary", "title": "交通局のあゆみ 都営地下鉄 — Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A" } ], "stationCount": 4 }, { "confidence": "medium", "constructionStart": "1990", "geometryRef": "tokyo-E", "id": "tokyo-e-19971219", "kind": "extension", "label": { "en": "Stage 2 opens: Nerima → Shinjuku (radial branch extension)" }, "notes": "[Date chase 2026-06-12] Construction start 1990-08-01 (Nerima-Shinjuku) confirmed by JA Wikipedia citing 大江戸線放射部建設史 p.5. EN Wikipedia records only the opening, not the construction start. Year 1990 supported.", "opened": "1997-12-19", "segment": { "fromStopIndex": 2, "toStopIndex": 10 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "1997年（平成9年）12月19日：練馬駅 - 新宿駅間が開業。建設開始は1990年8月1日。", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260410233702/https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line", "kind": "wikipedia", "quote": "The line was extended from Nerima to Shinjuku on 19 December 1997", "tier": "tertiary", "title": "Toei Ōedo Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation (Toei)", "quote": "1997年12月19日 — 12号線「新宿」～「練馬」開業", "tier": "primary", "title": "交通局のあゆみ 都営地下鉄 — Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A" } ], "stationCount": 8 }, { "confidence": "medium", "constructionStart": "1992", "geometryRef": "tokyo-E", "id": "tokyo-e-20000420", "kind": "extension", "label": { "en": "Stage 3 opens: Shinjuku → Kokuritsu-Kyōgijō (loop section, advance opening)" }, "notes": "[Date chase 2026-06-12] Loop section (環状部) construction start 1992-02-01 confirmed by JA Wikipedia citing 大江戸線放射部建設史 p.5. This advance loop opening shares the same construction start as the full-loop phase. Year 1992 supported. [Opening-date chase 2026-06-13] Sources show the line was renamed from Toei Line 12 to Toei Oedo Line on this same date (2000-04-20, Stage 3), not at the 2000-12-12 full-line opening as the Stage 4 label implies.", "opened": "2000-04-20", "segment": { "fromStopIndex": 10, "toStopIndex": 12 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "2000年（平成12年）4月20日：新宿駅 - 国立競技場駅間が開業。環状部の建設開始は1992年2月1日。", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20251112165840/https://ja.wikipedia.org/wiki/%E5%9B%BD%E7%AB%8B%E7%AB%B6%E6%8A%80%E5%A0%B4%E9%A7%85", "kind": "wikipedia", "quote": "2000年4月20日：大江戸線の新宿駅 - 当駅間の延伸により開業。（代々木駅E-26・国立競技場駅E-25）", "tier": "tertiary", "title": "国立競技場駅 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/国立競技場駅" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation (Toei)", "quote": "2000年4月20日 — 「12号線」を「大江戸線」に名称変更、大江戸線「新宿」～「国立競技場」開業", "tier": "primary", "title": "交通局のあゆみ 都営地下鉄 — Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A" } ], "stationCount": 2 }, { "confidence": "medium", "constructionStart": "1992", "cost": { "basis": "outturn", "confidence": "medium", "nominal": { "currency": "JPY", "isEstimate": false, "value": 958300000000, "year": 2000 }, "notes": "Figure is the final construction cost of the ENTIRE loop section (環状部): ¥958.3 billion; whole-line total (radial + loop) = ¥1,357.4 billion (¥1.3574 trillion), making it the most expensive Tokyo subway line per km (~¥32.3 billion/km on the loop). Nominal final-outturn yen accumulated over the 1992–2000 build; JA Wikipedia does not state a single deflated base year. The 24 new stations are E-24 down to E-01 plus Tochomae linkage; Shiodome existed only as a signal point (信号所) at this opening and is counted in the 2002 phase, not here. [Citation chase 2026-06-11] The loop-section construction cost ¥9,583億円 is confirmed by JA Wikipedia citing the 2015 official monograph 「大江戸線建設物語」 (pp. 20–21, supervised by Tokyo Metropolitan Bureau of Transportation); note that a separate 2006 Toei post-project evaluation gives an \"official\" loop cost of ¥988.6 billion, a ~3% higher figure likely reflecting a broader (total-project) accounting scope.", "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "全線開業日が平成12年12月12日で、本路線が12号線であることに因む", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260410233702/https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line", "kind": "wikipedia", "quote": "The full line began operation on 12 December 2000. ... renamed ... by Governor Shintaro Ishihara", "tier": "tertiary", "title": "Toei Ōedo Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line" } ] }, "geometryRef": "tokyo-E", "id": "tokyo-e-20001212", "kind": "extension", "label": { "en": "Stage 4: Full line opens — Kokuritsu-Kyōgijō → Tochomae loop completed; line renamed from Toei Line 12 to Toei Ōedo Line" }, "notes": "[Date chase 2026-06-12] Full-loop completion; loop section (環状部) construction start 1992-02-01 confirmed by JA Wikipedia citing 大江戸線放射部建設史 p.5 (same start as the 2000-04-20 advance opening). Year 1992 supported. [Opening-date chase 2026-06-13] Date deliberately chosen as 12/12 to match Line 12. Shiodome was not opened on this date; it operated as a signal point with all trains passing through until 2002-11-02.", "opened": "2000-12-12", "segment": { "fromStopIndex": 9, "toStopIndex": 36 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "全線開業日が平成12年12月12日で、本路線が12号線であることに因む", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260410233702/https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line", "kind": "wikipedia", "quote": "The full line began operation on 12 December 2000. ... renamed ... by Governor Shintaro Ishihara", "tier": "tertiary", "title": "Toei Ōedo Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation (Toei)", "quote": "2000年12月12日 — 大江戸線「国立競技場」～「大門」～「都庁前」開業", "tier": "primary", "title": "交通局のあゆみ 都営地下鉄 — Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A" } ], "stationCount": 24 }, { "confidence": "medium", "geometryRef": "tokyo-E", "id": "tokyo-e-20021102", "kind": "extension", "label": { "en": "Shiodome Station opens (infill station on already-open loop section; former signal point converted to station)" }, "notes": "[Opening-date chase 2026-06-13] Shiodome had operated as a through signal point ('汐留信号所〈2代〉') since the 2000-12-12 full-line opening; converted to a full revenue station on 2002-11-02 to connect with the Yurikamome line.", "opened": "2002-11-02", "segment": { "fromStopIndex": 12, "toStopIndex": 18 }, "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "汐留信号所（2代）を駅に変更して汐留駅開業 ... 2002年11月2日", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260410233702/https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line", "kind": "wikipedia", "quote": "An additional station (Shiodome Station) was opened on 2 November 2002 to connect to the Yurikamome guideway transit line.", "tier": "tertiary", "title": "Toei Ōedo Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line" }, { "accessedAt": "2026-06-13", "archivedUrl": "https://web.archive.org/web/20260412085637/https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "kind": "primary", "publisher": "Tokyo Metropolitan Bureau of Transportation (Toei)", "quote": "2002年11月02日 — 大江戸線汐留駅開業", "tier": "primary", "title": "交通局のあゆみ 都営地下鉄 — Tokyo Metropolitan Bureau of Transportation", "url": "https://www.kotsu.metro.tokyo.jp/about/ayumi/subway.html", "via": "https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A" } ], "stationCount": 1 } ], "sources": [ { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260509092531/https://ja.wikipedia.org/wiki/%E9%83%BD%E5%96%B6%E5%9C%B0%E4%B8%8B%E9%89%84%E5%A4%A7%E6%B1%9F%E6%88%B8%E7%B7%9A", "kind": "wikipedia", "quote": "1991年（平成3年）12月10日：都営12号線として光が丘駅 - 練馬駅間が開業。建設開始は1986年6月1日。", "tier": "tertiary", "title": "都営地下鉄大江戸線 — Wikipedia (JA)", "url": "https://ja.wikipedia.org/wiki/都営地下鉄大江戸線" }, { "accessedAt": "2026-06-08", "archivedUrl": "https://web.archive.org/web/20260410233702/https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line", "kind": "wikipedia", "quote": "the first segment from Hikarigaoka to Nerima began operations on 10 December 1991 ... Construction began on June 1, 1986", "tier": "tertiary", "title": "Toei Ōedo Line — Wikipedia", "url": "https://en.wikipedia.org/wiki/Toei_%C5%8Cedo_Line" } ] } ], "name": { "en": "Tokyo", "ja": "東京" } }