{
  "bbox": [
    17.78,
    59.22,
    18.16,
    59.43
  ],
  "center": [
    18.06,
    59.33
  ],
  "country": "Sweden",
  "defaultZoom": 10,
  "homeCurrency": "SEK",
  "id": "stockholm",
  "lines": [
    {
      "cityId": "stockholm",
      "color": "#4e9d45",
      "displayNumber": "18",
      "id": "stockholm-line-18",
      "name": {
        "en": "Green Line 18 (Hässelby strand ↔ Farsta strand)",
        "sv": "Gröna linjen 18"
      },
      "phases": [
        {
          "confidence": "medium",
          "constructionStart": "1944",
          "geometryRef": "stockholm-18",
          "id": "stockholm-green-1950",
          "kind": "initial",
          "label": {
            "en": "Stockholm's first metro: Slussen → Hökarängen"
          },
          "notes": "Stockholm’s first true metro section (Slussen–Hökarängen) opened 1 Oct 1950, partly converting tram line 18 and reusing the 1933 Södertunneln tram tunnel under Södermalm. No per-section metro construction cost is published (archival only: Stockholms stadsarkiv / SL annual reports); the ≈4.5M kr (1933) Södertunneln figure is the premetro tram tunnel, not the 1950 metro, so no cost is recorded here. [Date chase 2026-06-12] Construction-start year: chased sources (en Stockholm Metro; sv Stockholms tunnelbana, citing Larsson 1977) consistently give 1944 as the formal start of Stockholm metro construction, the project this first phase represents. No source supports the curated 1945. Larsson 1977 (Yngve Larsson) is the print primary citation behind the 1944 date; not accessible online. [Corrected 2026-06-12 after date chase] Construction start corrected 1945→1944: formal metro construction began 1944 per EN+SV Wikipedia (citing Larsson 1977); no source supports 1945. Panel-confirmed.",
          "opened": "1950-10-01",
          "segment": {
            "fromStopIndex": 22,
            "toStopIndex": 32
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On Sunday October 1, 1950, the line opened between Slussen and Hökarängen, including the rebuilt tram tracks through the Södertunneln and over the Skanstullsbron.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260509225406/https://sparvagsmuseet.se/historien-om-tunnelbanan/",
              "kind": "other",
              "title": "Historien om tunnelbanan — Spårvägsmuseet (Slussen–Hökarängen invigd 1 okt 1950)",
              "url": "https://sparvagsmuseet.se/historien-om-tunnelbanan/"
            }
          ],
          "stationCount": 10
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-18",
          "id": "stockholm-green-vallingby-1952",
          "kind": "extension",
          "label": {
            "en": "Western line opens (detached): Hötorget → Vällingby"
          },
          "opened": "1952-10-26",
          "segment": {
            "fromStopIndex": 3,
            "toStopIndex": 19
          },
          "sources": [
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On Sunday October 26, 1952, a detached section of line from Hötorget to Vällingby was opened, including the former tram tracks over the Tranebergsbron and on to Islandstorget.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) — Wikipedia (Hötorget–Vällingby opened 26 Oct 1952)",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            }
          ],
          "stationCount": 15
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-18",
          "id": "stockholm-green-hasselbygard-1956",
          "kind": "extension",
          "label": {
            "en": "West extension: Vällingby → Hässelby gård"
          },
          "opened": "1956-11-01",
          "segment": {
            "fromStopIndex": 1,
            "toStopIndex": 3
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On Thursday November 1, 1956, the line was extended from Vällingby to Hässelby gård.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20250927225213/https://sv.wikipedia.org/wiki/H%C3%A4sselby_strand_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Hässelby strand (tunnelbanestation) — Wikipedia (sv) (Vällingby–Hässelby gård 1956)",
              "url": "https://sv.wikipedia.org/wiki/H%C3%A4sselby_strand_(tunnelbanestation)"
            }
          ],
          "stationCount": 2
        },
        {
          "confidence": "low",
          "constructionStart": "1953",
          "geometryRef": "stockholm-18",
          "id": "stockholm-green-sammanbindning-1957",
          "kind": "extension",
          "label": {
            "en": "Central link joins west + south: Hötorget → Slussen (T-Centralen, Gamla stan)"
          },
          "notes": "[Date chase 2026-06-12] No explicit construction-start date found for the central link in any chased source. Circumstantial evidence: a 13 December 1952 flood during tunneling at Norrström (sv Stockholms tunnelbana) shows work was underway by late 1952, hinting the curated 1953 start may be slightly late, but this is not a stated start date.",
          "opened": "1957-11-24",
          "segment": {
            "fromStopIndex": 19,
            "toStopIndex": 22
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On Sunday November 24, 1957, Hotorget was linked to Slussen across central Stockholm, connecting the two previously disconnected sections.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260218175858/https://sv.wikipedia.org/wiki/Gamla_stan_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Gamla stan (tunnelbanestation) — Wikipedia (sv) (Sammanbindningsbanan opened 24 Nov 1957)",
              "url": "https://sv.wikipedia.org/wiki/Gamla_stan_(tunnelbanestation)"
            }
          ],
          "stationCount": 2
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-18",
          "id": "stockholm-green-hasselbystrand-1958",
          "kind": "extension",
          "label": {
            "en": "West terminus reached: Hässelby gård → Hässelby strand"
          },
          "notes": "[Opening-date chase 2026-06-13] Public revenue service to Hässelby strand began Wednesday 19 November 1958 at 05:00; the 18 November 1958 date reflects the ceremonial VIP inaugural train ('invigningståg', 320 invited guests). For consistency with the Farsta phase (curated 1958-11-19, the revenue date) consider aligning the revenue-service date to 1958-11-19.",
          "opened": "1958-11-18",
          "segment": {
            "fromStopIndex": 0,
            "toStopIndex": 1
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On Tuesday November 18, 1958, the line was extended from Hökarängen to Farsta.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20250927225213/https://sv.wikipedia.org/wiki/H%C3%A4sselby_strand_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Hässelby strand (tunnelbanestation) — Wikipedia (sv) (terminus opened 18 Nov 1958)",
              "url": "https://sv.wikipedia.org/wiki/H%C3%A4sselby_strand_(tunnelbanestation)"
            }
          ],
          "stationCount": 1
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-18",
          "id": "stockholm-green-farsta-1958",
          "kind": "extension",
          "label": {
            "en": "South extension: Hökarängen → Farsta"
          },
          "notes": "[Opening-date chase 2026-06-13] Curated 1958-11-19 correctly reflects public revenue service; the 18 November date on English Wikipedia is the ceremonial VIP inaugural run.",
          "opened": "1958-11-19",
          "segment": {
            "fromStopIndex": 32,
            "toStopIndex": 33
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On Tuesday November 18, 1958, the line was extended from Hässelby gård to Hässelby strand.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20251229224231/https://sv.wikipedia.org/wiki/Farsta_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Farsta (tunnelbanestation) — Wikipedia (sv) (Hökarängen–Farsta 1958)",
              "url": "https://sv.wikipedia.org/wiki/Farsta_(tunnelbanestation)"
            }
          ],
          "stationCount": 1
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-18",
          "id": "stockholm-green-farstastrand-1971",
          "kind": "extension",
          "label": {
            "en": "South terminus: Farsta → Farsta strand"
          },
          "opened": "1971-08-29",
          "segment": {
            "fromStopIndex": 33,
            "toStopIndex": 34
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On Sunday August 29, 1971, the line was extended from Farsta to Farsta strand.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20250927225119/https://sv.wikipedia.org/wiki/Farsta_strand_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Farsta strand (tunnelbanestation) — Wikipedia (sv) (Farsta–Farsta strand 29 Aug 1971)",
              "url": "https://sv.wikipedia.org/wiki/Farsta_strand_(tunnelbanestation)"
            }
          ],
          "stationCount": 1
        }
      ],
      "sources": [
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Green line (Stockholm metro) — Wikipedia",
          "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
        },
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20251230044632/https://sv.wikipedia.org/wiki/Gr%C3%B6na_linjen_(Stockholms_tunnelbana)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Gröna linjen (Stockholms tunnelbana) — Wikipedia (sv)",
          "url": "https://sv.wikipedia.org/wiki/Gr%C3%B6na_linjen_(Stockholms_tunnelbana)"
        }
      ]
    },
    {
      "cityId": "stockholm",
      "color": "#4e9d45",
      "displayNumber": "19",
      "id": "stockholm-line-19",
      "name": {
        "en": "Green Line 19 (Hässelby strand ↔ Hagsätra)",
        "sv": "Gröna linjen 19"
      },
      "phases": [
        {
          "confidence": "medium",
          "geometryRef": "stockholm-19",
          "id": "stockholm-green-hagsatra-1951",
          "kind": "extension",
          "label": {
            "en": "Hagsätra branch: Gullmarsplan → Högdalen (1951–54)"
          },
          "opened": "1951-09-09",
          "segment": {
            "from": [
              18.0808,
              59.2983
            ],
            "to": [
              18.044,
              59.265
            ]
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On Sunday September 9, 1951, the branch from Gullmarsplan to Stureby opened, largely using the rebuilt route of tram route 19.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20251230044632/https://sv.wikipedia.org/wiki/Gr%C3%B6na_linjen_(Stockholms_tunnelbana)",
              "kind": "wikipedia",
              "title": "Gröna linjen — Wikipedia (sv) (Gullmarsplan–Stureby 1951, –Högdalen 1954)",
              "url": "https://sv.wikipedia.org/wiki/Gr%C3%B6na_linjen_(Stockholms_tunnelbana)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20251230044632/https://sv.wikipedia.org/wiki/Gr%C3%B6na_linjen_(Stockholms_tunnelbana)",
              "kind": "other",
              "publisher": "Wikipedia (Swedish)",
              "quote": "9 september 1951",
              "tier": "secondary",
              "title": "Gröna linjen (Stockholms tunnelbana) — Wikipedia (sv)",
              "url": "https://sv.wikipedia.org/wiki/Gröna_linjen_(Stockholms_tunnelbana)",
              "via": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164426/https://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "kind": "other",
              "publisher": "urbanrail.net (Robert Schwandl)",
              "quote": "09 Sept 1951: Gullmarsplan - Stureby Green Line (South)",
              "tier": "tertiary",
              "title": "Stockholm — urbanrail.net",
              "url": "http://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "via": "https://en.wikipedia.org/wiki/Hags%C3%A4tra_metro_station"
            }
          ],
          "stationCount": 6
        },
        {
          "confidence": "medium",
          "geometryRef": "stockholm-19",
          "id": "stockholm-green-hagsatra-1960",
          "kind": "extension",
          "label": {
            "en": "Hagsätra branch completed: Högdalen → Hagsätra (via Rågsved)"
          },
          "notes": "[Opening-date chase 2026-06-13] Swedish Hagsatra station article confirms the 1 Dec 1960 opening was revenue service: the inaugural train (premiartag) departed Hagsatra at 15:38 — first revenue train, not a separate ceremonial run.",
          "opened": "1960-12-01",
          "segment": {
            "from": [
              18.044,
              59.265
            ],
            "to": [
              18.0122,
              59.2622
            ]
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20251216121453/https://en.wikipedia.org/wiki/Hags%C3%A4tra_metro_station",
              "kind": "wikipedia",
              "quote": "was inaugurated on 1 December 1960 when one-station extension from Rågsved was completed",
              "tier": "secondary",
              "title": "Hagsätra metro station - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Hags%C3%A4tra_metro_station"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20250927225037/https://sv.wikipedia.org/wiki/Hags%C3%A4tra_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Hagsätra (tunnelbanestation) — Wikipedia (sv) (Rågsved–Hagsätra 1 Dec 1960)",
              "url": "https://sv.wikipedia.org/wiki/Hags%C3%A4tra_(tunnelbanestation)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164426/https://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "kind": "other",
              "publisher": "urbanrail.net (Robert Schwandl)",
              "quote": "01 Dec 1960: Rögsvéd - Hagsätra Green Line",
              "tier": "tertiary",
              "title": "Stockholm — urbanrail.net",
              "url": "http://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "via": "https://en.wikipedia.org/wiki/Hags%C3%A4tra_metro_station"
            }
          ],
          "stationCount": 2
        }
      ],
      "sources": [
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20250927225037/https://sv.wikipedia.org/wiki/Hags%C3%A4tra_(tunnelbanestation)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Hagsätra (tunnelbanestation) — Wikipedia (sv)",
          "url": "https://sv.wikipedia.org/wiki/Hags%C3%A4tra_(tunnelbanestation)"
        }
      ]
    },
    {
      "cityId": "stockholm",
      "color": "#4e9d45",
      "displayNumber": "17",
      "id": "stockholm-line-17",
      "name": {
        "en": "Green Line 17 (Hässelby strand ↔ Skarpnäck)",
        "sv": "Gröna linjen 17"
      },
      "phases": [
        {
          "confidence": "low",
          "geometryRef": "stockholm-17",
          "id": "stockholm-green-bagarmossen-1958",
          "kind": "extension",
          "label": {
            "en": "Bagarmossen branch: Gullmarsplan → Bagarmossen"
          },
          "notes": "[Opening-date chase 2026-06-13] Ceremonial inauguration was 18 Nov 1958 (invited-guests invigningstag); revenue service to Bagarmossen opened the following morning, 19 Nov 1958 at 05:00.",
          "opened": "1958-11-18",
          "segment": {
            "from": [
              18.0808,
              59.2983
            ],
            "to": [
              18.1314,
              59.2761
            ]
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260311142027/https://en.wikipedia.org/wiki/Green_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "November 18 - Three extensions: Hammarbyhöjden to Bagarmossen, Hökarängen to Farsta, and Hässelby gård to Hässelby strand.",
              "tier": "secondary",
              "title": "Green line (Stockholm metro) – Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Green_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20251210115914/https://sv.wikipedia.org/wiki/Bagarmossen_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Bagarmossen (tunnelbanestation) — Wikipedia (sv) (Skärmarbrink–Bagarmossen corridor 1958)",
              "url": "https://sv.wikipedia.org/wiki/Bagarmossen_(tunnelbanestation)"
            }
          ],
          "stationCount": 4
        },
        {
          "confidence": "low",
          "constructionStart": "1990",
          "geometryRef": "stockholm-17",
          "id": "stockholm-green-skarpnack-1994",
          "kind": "extension",
          "label": {
            "en": "Skarpnäck extension: Bagarmossen → Skarpnäck (system's 100th station)"
          },
          "notes": "[Date chase 2026-06-12] Primary source (BK-Dagen 1992 paper, Stockholms gatukontor/SL): Skanska/Stabilator appointed contractor autumn 1989; structural works ran to autumn 1992; permanent reinforcement of Skarpnäck station began before Christmas 1990. Best-supported construction-start year is 1990 (contractor appointment autumn 1989 suggests blasting may have begun late 1989/early 1990). The chased PDF has via=\"\" and supportsDate=\"no\", so it is not attached as an accepted source despite being the contradicting primary evidence. [Corrected 2026-06-12 after date chase] Construction start corrected 1991→1990: BK-Dagen 1992 engineering conference paper (Stockholms gatukontor/SL) shows Skarpnäck station works underway before Christmas 1990. Panel-confirmed.",
          "opened": "1994-08-15",
          "segment": {
            "from": [
              18.1314,
              59.2761
            ],
            "to": [
              18.1333,
              59.2668
            ]
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20251210115914/https://sv.wikipedia.org/wiki/Bagarmossen_(tunnelbanestation)",
              "kind": "wikipedia",
              "quote": "Stationen var ändstation för linje 17 fram till 8 juli 1994 ... 15 augusti 1994 ... förlängningen av tunnelbanan till Skarpnäck",
              "tier": "secondary",
              "title": "Bagarmossen (tunnelbanestation) – Wikipedia",
              "url": "https://sv.wikipedia.org/wiki/Bagarmossen_(tunnelbanestation)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260203192456/https://sv.wikipedia.org/wiki/Skarpn%C3%A4ck_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Skarpnäck (tunnelbanestation) — Wikipedia (sv) (Bagarmossen–Skarpnäck opened 15 Aug 1994)",
              "url": "https://sv.wikipedia.org/wiki/Skarpn%C3%A4ck_(tunnelbanestation)"
            }
          ],
          "stationCount": 1
        }
      ],
      "sources": [
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20260203192456/https://sv.wikipedia.org/wiki/Skarpn%C3%A4ck_(tunnelbanestation)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Skarpnäck (tunnelbanestation) — Wikipedia (sv)",
          "url": "https://sv.wikipedia.org/wiki/Skarpn%C3%A4ck_(tunnelbanestation)"
        }
      ]
    },
    {
      "cityId": "stockholm",
      "color": "#d4202a",
      "displayNumber": "13",
      "id": "stockholm-line-13",
      "name": {
        "en": "Red Line 13 (Norsborg ↔ Ropsten)",
        "sv": "Röda linjen 13"
      },
      "phases": [
        {
          "confidence": "low",
          "geometryRef": "stockholm-13",
          "id": "stockholm-red-1964",
          "kind": "initial",
          "label": {
            "en": "Red line opens: T-Centralen → Örnsberg (central trunk + SW)"
          },
          "opened": "1964-04-05",
          "segment": {
            "fromStopIndex": 11,
            "toStopIndex": 19
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20251224191619/https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)",
              "kind": "wikipedia",
              "quote": "\"Örnsberg–T-Centralen–Fruängen\" section opened on \"Sunday April 5, 1964\"",
              "tier": "secondary",
              "title": "Red line (Stockholm Metro) – Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "title": "Red line (Stockholm Metro) — Wikipedia (opened 5 Apr 1964 to Fruängen/Örnsberg)",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 8
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-13",
          "id": "stockholm-red-ostermalm-1965",
          "kind": "extension",
          "label": {
            "en": "NE: T-Centralen → Östermalmstorg; SW: Örnsberg → Sätra"
          },
          "opened": "1965-05-16",
          "segment": {
            "fromStopIndex": 8,
            "toStopIndex": 11
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20251224191619/https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)",
              "kind": "wikipedia",
              "quote": "Two extensions: \"T-Centralen–Östermalmstorg\" and \"Örnsberg–Sätra\" both opened Sunday [May 16, 1965]",
              "tier": "secondary",
              "title": "Red line (Stockholm Metro) – Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "title": "Red line (Stockholm Metro) — Wikipedia (Östermalmstorg & Sätra opened 16 May 1965)",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 4
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-13",
          "id": "stockholm-red-ropsten-1967",
          "kind": "extension",
          "label": {
            "en": "NE terminus: Östermalmstorg → Ropsten"
          },
          "opened": "1967-09-02",
          "segment": {
            "fromStopIndex": 19,
            "toStopIndex": 23
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20251224191619/https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)",
              "kind": "wikipedia",
              "quote": "September 2, 1967: \"Östermalmstorg–Ropsten\" opened Saturday (northern branch).",
              "tier": "secondary",
              "title": "Red line (Stockholm Metro) – Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "title": "Red line (Stockholm Metro) — Wikipedia (Östermalmstorg–Ropsten 2 Sep 1967)",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 3
        },
        {
          "confidence": "medium",
          "geometryRef": "stockholm-13",
          "id": "stockholm-red-varberg-1967",
          "kind": "extension",
          "label": {
            "en": "SW: Sätra → Vårberg (Skärholmen 1967)"
          },
          "notes": "[Opening-date chase 2026-06-13] Partial-then-full corridor: Sätra–Skärholmen opened 1967-03-01; Skärholmen–Vårberg (completing the Sätra->Vårberg segment) opened 1967-12-02. Curated date is the Vårberg terminus opening.",
          "opened": "1967-12-02",
          "segment": {
            "fromStopIndex": 6,
            "toStopIndex": 8
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20251224191619/https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)",
              "kind": "wikipedia",
              "quote": "December 2, 1967: \"Skärholmen-Vårberg\" opened Saturday.",
              "tier": "secondary",
              "title": "Red line (Stockholm Metro) – Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "title": "Red line (Stockholm Metro) — Wikipedia (Skärholmen 1 Mar 1967, Vårberg 2 Dec 1967)",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164420/https://en.wikipedia.org/wiki/Sk%C3%A4rholmen_metro_station",
              "kind": "other",
              "publisher": "Wikipedia",
              "quote": "The station opened on 1 March 1967 as the southern terminus of an extension from Sätra",
              "tier": "secondary",
              "title": "Skärholmen metro station — Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Skärholmen_metro_station",
              "via": "https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)"
            }
          ],
          "stationCount": 2
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-13",
          "id": "stockholm-red-fittja-1972",
          "kind": "extension",
          "label": {
            "en": "SW: Vårberg → Fittja"
          },
          "opened": "1972-10-01",
          "segment": {
            "fromStopIndex": 3,
            "toStopIndex": 6
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20251224191619/https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)",
              "kind": "wikipedia",
              "quote": "October 1, 1972: \"Vårberg–Fittja\" opened Sunday.",
              "tier": "secondary",
              "title": "Red line (Stockholm Metro) – Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "title": "Red line (Stockholm Metro) — Wikipedia (Vårberg–Fittja 1 Oct 1972)",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 3
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-13",
          "id": "stockholm-red-norsborg-1975",
          "kind": "extension",
          "label": {
            "en": "SW terminus (Botkyrkabanan): Fittja → Norsborg"
          },
          "opened": "1975-01-12",
          "segment": {
            "fromStopIndex": 0,
            "toStopIndex": 3
          },
          "sources": [
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20250927225119/https://sv.wikipedia.org/wiki/Norsborg_(tunnelbanestation)",
              "kind": "wikipedia",
              "quote": "Stationen togs i bruk den 12 januari 1975 när sträckan Fittja–Norsborg invigdes.",
              "tier": "secondary",
              "title": "Norsborg (tunnelbanestation) — Wikipedia (sv) (Fittja–Norsborg 12 Jan 1975)",
              "url": "https://sv.wikipedia.org/wiki/Norsborg_(tunnelbanestation)"
            }
          ],
          "stationCount": 3
        },
        {
          "confidence": "low",
          "geometryRef": null,
          "id": "stockholm-red-renumber-2004",
          "kind": "renumber",
          "label": {
            "en": "Renumbering: line 23 (Norsborg – Ropsten) becomes line 13"
          },
          "notes": "Service renumbering only — no new track or stations; the line’s route was unchanged. Reflects SL’s metro line-number scheme. [Opening-date chase 2026-06-13] Renumbering year is approximate ('omkring 2004'); no exact date or primary (operator) source located.",
          "opened": "2004",
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260116133256/https://sv.wikipedia.org/wiki/R%C3%B6da_linjen_(Stockholms_tunnelbana)",
              "kind": "wikipedia",
              "quote": "Linjen mellan Norsborg och Ropsten och omvänt hette tidigare linje 23, men bytte till nummer 13 omkring 2004",
              "tier": "secondary",
              "title": "Röda linjen (Stockholms tunnelbana) – Wikipedia",
              "url": "https://sv.wikipedia.org/wiki/R%C3%B6da_linjen_(Stockholms_tunnelbana)"
            }
          ]
        }
      ],
      "sources": [
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Red line (Stockholm Metro) — Wikipedia",
          "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
        },
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20260116133256/https://sv.wikipedia.org/wiki/R%C3%B6da_linjen_(Stockholms_tunnelbana)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Röda linjen (Stockholms tunnelbana) — Wikipedia (sv)",
          "url": "https://sv.wikipedia.org/wiki/R%C3%B6da_linjen_(Stockholms_tunnelbana)"
        }
      ]
    },
    {
      "cityId": "stockholm",
      "color": "#d4202a",
      "displayNumber": "14",
      "id": "stockholm-line-14",
      "name": {
        "en": "Red Line 14 (Fruängen ↔ Mörby centrum)",
        "sv": "Röda linjen 14"
      },
      "phases": [
        {
          "confidence": "high",
          "geometryRef": "stockholm-14",
          "id": "stockholm-red-fruangen-1964",
          "kind": "initial",
          "label": {
            "en": "Red line opens: Fruängen → Liljeholmen (SW branch)"
          },
          "opened": "1964-04-05",
          "segment": {
            "fromStopIndex": 0,
            "toStopIndex": 5
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "quote": "April 5, 1964: \"Örnsberg–T-Centralen–Fruängen\" section opened, establishing the foundational southwest-to-center connection.",
              "tier": "secondary",
              "title": "Red line (Stockholm metro) — Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "title": "Red line (Stockholm Metro) — Wikipedia (T-Centralen–Fruängen opened 5 Apr 1964)",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164426/https://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "kind": "other",
              "publisher": "UrbanRail.Net (Robert Schwandl)",
              "quote": "05 Apr 1964: T-Centralen - Fruängen Red Line [and] Liljeholmen - Örnsberg Red Line",
              "tier": "secondary",
              "title": "Stockholm — UrbanRail.Net",
              "url": "http://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "via": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164325/https://sparvagsmuseet.se/historien-om-tunnelbanan/",
              "kind": "primary",
              "publisher": "Spårvägsmuseet (Stockholm Transport Museum)",
              "quote": "April 5, 1964: First section inaugurated; \"en efterlängtad händelse för många söderortsbor\"",
              "tier": "primary",
              "title": "Historien om tunnelbanan — Spårvägsmuseet",
              "url": "https://sparvagsmuseet.se/historien-om-tunnelbanan/",
              "via": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 5
        },
        {
          "confidence": "medium",
          "geometryRef": "stockholm-14",
          "id": "stockholm-red-tekniska-1973",
          "kind": "extension",
          "label": {
            "en": "NE (Täbybanan stage 1): Östermalmstorg → Tekniska högskolan"
          },
          "opened": "1973-09-30",
          "segment": {
            "fromStopIndex": 11,
            "toStopIndex": 14
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260108063944/https://en.wikipedia.org/wiki/Tekniska_h%C3%B6gskolan_metro_station",
              "kind": "wikipedia",
              "quote": "The station was opened on 30 September 1973 as the northern terminus of the extension from Östermalmstorg metro station.",
              "tier": "secondary",
              "title": "Tekniska högskolan metro station — Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Tekniska_h%C3%B6gskolan_metro_station"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260111112653/https://sv.wikipedia.org/wiki/Tekniska_h%C3%B6gskolan_(tunnelbanestation)",
              "kind": "wikipedia",
              "title": "Tekniska högskolan (tunnelbanestation) — Wikipedia (sv) (opened 30 Sep 1973)",
              "url": "https://sv.wikipedia.org/wiki/Tekniska_h%C3%B6gskolan_(tunnelbanestation)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164426/https://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "kind": "other",
              "publisher": "UrbanRail.Net (Robert Schwandl)",
              "quote": "30 Sept 1973: Östermalmstorg - Tekniska Högskolan Red Line",
              "tier": "secondary",
              "title": "Stockholm — UrbanRail.Net",
              "url": "http://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "via": "https://en.wikipedia.org/wiki/Tekniska_h%C3%B6gskolan_metro_station"
            }
          ],
          "stationCount": 2
        },
        {
          "confidence": "medium",
          "geometryRef": "stockholm-14",
          "id": "stockholm-red-universitetet-1975",
          "kind": "extension",
          "label": {
            "en": "NE: Tekniska högskolan → Universitetet"
          },
          "opened": "1975-01-12",
          "segment": {
            "fromStopIndex": 14,
            "toStopIndex": 15
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260108063944/https://en.wikipedia.org/wiki/Tekniska_h%C3%B6gskolan_metro_station",
              "kind": "wikipedia",
              "quote": "On 12 January 1975, the line was extended further north to Universitetet.",
              "tier": "secondary",
              "title": "Tekniska högskolan metro station — Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Tekniska_h%C3%B6gskolan_metro_station"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "title": "Red line (Stockholm Metro) — Wikipedia (Tekniska högskolan–Universitetet 12 Jan 1975)",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164426/https://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "kind": "other",
              "publisher": "UrbanRail.Net (Robert Schwandl)",
              "quote": "12 Jan 1975: Tekniska Högskolan - Universitetet Red Line",
              "tier": "secondary",
              "title": "Stockholm — UrbanRail.Net",
              "url": "http://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "via": "https://en.wikipedia.org/wiki/Tekniska_h%C3%B6gskolan_metro_station"
            }
          ],
          "stationCount": 1
        },
        {
          "confidence": "medium",
          "geometryRef": "stockholm-14",
          "id": "stockholm-red-morby-1978",
          "kind": "extension",
          "label": {
            "en": "NE terminus: Universitetet → Mörby centrum"
          },
          "opened": "1978-01-29",
          "segment": {
            "fromStopIndex": 15,
            "toStopIndex": 18
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260613164535/https://en.wikipedia.org/wiki/M%C3%B6rby_centrum_metro_station",
              "kind": "wikipedia",
              "quote": "The station was inaugurated on 29 January 1978 as the northern terminus of the extension from Universitetet.",
              "tier": "secondary",
              "title": "Mörby centrum metro station — Wikipedia",
              "url": "https://en.wikipedia.org/wiki/M%C3%B6rby_centrum_metro_station"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260509225406/https://sparvagsmuseet.se/historien-om-tunnelbanan/",
              "kind": "other",
              "title": "Historien om tunnelbanan — Spårvägsmuseet (Mörby centrum opened 29 Jan 1978)",
              "url": "https://sparvagsmuseet.se/historien-om-tunnelbanan/"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164426/https://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "kind": "other",
              "publisher": "UrbanRail.Net (Robert Schwandl)",
              "quote": "29 Jan 1978: Universitetet - Mörby Centrum Red Line",
              "tier": "secondary",
              "title": "Stockholm — UrbanRail.Net",
              "url": "http://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "via": "https://en.wikipedia.org/wiki/M%C3%B6rby_centrum_metro_station"
            }
          ],
          "stationCount": 3
        },
        {
          "confidence": "low",
          "geometryRef": null,
          "id": "stockholm-red-renumber-2001",
          "kind": "renumber",
          "label": {
            "en": "Renumbering: line 24 (Fruängen – Mörby centrum) becomes line 14"
          },
          "notes": "Service renumbering only — no new track or stations; the line’s route was unchanged. Reflects SL’s metro line-number scheme. [Opening-date chase 2026-06-13] Administrative renumbering (line 24 → 14), not a revenue-service opening. Only Wikipedia attests it, with the qualifier 'around 2001' and no inline citation; year is approximate. Spårvägsmuseet and UrbanRail.Net do not mention the number change.",
          "opened": "2001",
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "quote": "originally numbered line 24, but was renumbered 14 around 2001",
              "tier": "secondary",
              "title": "Red line (Stockholm metro) — Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)"
            }
          ]
        },
        {
          "confidence": "high",
          "geometryRef": "stockholm-14",
          "id": "stockholm-14-1964-shared-6",
          "kind": "extension",
          "label": {
            "en": "Shared section (track opened with line 13)"
          },
          "notes": "Runs over track that opened with line 13 on 1964-04-05; attributed here for map continuity (no separate cost, to avoid double-counting shared infrastructure).",
          "opened": "1964-04-05",
          "segment": {
            "fromStopIndex": 5,
            "toStopIndex": 11
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20251224191619/https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)",
              "kind": "wikipedia",
              "quote": "\"Örnsberg–T-Centralen–Fruängen\" section opened on \"Sunday April 5, 1964\"",
              "tier": "secondary",
              "title": "Red line (Stockholm Metro) – Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Line_13_(Stockholm_metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
              "kind": "wikipedia",
              "title": "Red line (Stockholm Metro) — Wikipedia (opened 5 Apr 1964 to Fruängen/Örnsberg)",
              "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164426/https://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "kind": "other",
              "publisher": "UrbanRail.Net (Robert Schwandl)",
              "quote": "05 Apr 1964: T-Centralen - Fruängen Red Line [and] Liljeholmen - Örnsberg Red Line",
              "tier": "secondary",
              "title": "Stockholm — UrbanRail.Net",
              "url": "http://www.urbanrail.net/eu/se/stockholm/stockhlm.htm",
              "via": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260613164325/https://sparvagsmuseet.se/historien-om-tunnelbanan/",
              "kind": "primary",
              "publisher": "Spårvägsmuseet (Stockholm Transport Museum)",
              "quote": "April 5, 1964: First section inaugurated; \"en efterlängtad händelse för många söderortsbor\"",
              "tier": "primary",
              "title": "Historien om tunnelbanan — Spårvägsmuseet",
              "url": "https://sparvagsmuseet.se/historien-om-tunnelbanan/",
              "via": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
            }
          ]
        }
      ],
      "sources": [
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20260101091700/https://en.wikipedia.org/wiki/Red_line_(Stockholm_metro)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Red line (Stockholm Metro) — Wikipedia",
          "url": "https://en.wikipedia.org/wiki/Red_line_(Stockholm_Metro)"
        }
      ]
    },
    {
      "cityId": "stockholm",
      "color": "#0094cd",
      "displayNumber": "10",
      "id": "stockholm-line-10",
      "name": {
        "en": "Blue Line 10 (Kungsträdgården ↔ Hjulsta)",
        "sv": "Blå linjen 10"
      },
      "phases": [
        {
          "confidence": "medium",
          "constructionStart": "1966",
          "cost": {
            "basis": "outturn",
            "confidence": "medium",
            "nominal": {
              "currency": "SEK",
              "isEstimate": true,
              "value": 1400000000,
              "year": 1975
            },
            "notes": "Figure is the total cost of the ENTIRE Blue line (lines 10 + 11 combined), ≈ 1.4 billion kr in 1975 prices — not line-10- or phase-specific. Recorded once on line 10’s trunk phase to avoid double-counting; line 11 carries no cost. No per-stage figure is published. [Citation chase 2026-06-11] The 1.4 billion SEK (1975 prices) figure explicitly EXCLUDES land acquisition costs (\"exklusive markförvärvskostnader\") and is sourced ultimately from the book \"Stockholms tunnelbanor 1975\" — quoted on a rail-enthusiast forum (postvagnen.com) and restated on Wikipedia; the phrasing indicates a reported total cost rather than a pre-construction estimate.",
            "sources": [
              {
                "accessedAt": "2026-06-02",
                "archivedUrl": "https://web.archive.org/web/20260101071329/https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)",
                "kind": "wikipedia",
                "title": "Blå linjen (Stockholms tunnelbana) — Wikipedia (sv) (≈1,4 mdr kr, 1975)",
                "url": "https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)"
              },
              {
                "accessedAt": "2026-06-11",
                "archivedUrl": "https://web.archive.org/web/20260613164536/https://www.postvagnen.com/",
                "kind": "other",
                "publisher": "postvagnen.com (rail enthusiast forum)",
                "quote": "Enligt boken \"Stockholms tunnelbanor 1975\" var kostnaden för den Blå linjen i 1975 års prisnivå cirka 1,4 miljarder kr exklusive markförvärvskostnader.",
                "tier": "secondary",
                "title": "Postvagnen forum — inlägg #558780 (archived 2015-09-24)",
                "url": "https://web.archive.org/web/20150924080523/http://www.postvagnen.com/forum/index.php?id=558780",
                "via": "https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)"
              }
            ]
          },
          "geometryRef": "stockholm-10",
          "id": "stockholm-blue-trunk-1975",
          "kind": "initial",
          "label": {
            "en": "Blue line opens: Västra skogen → T-Centralen (trunk)"
          },
          "notes": "[Date chase 2026-06-12] SV Blue Line article corroborates the 2 September 1966 groundbreaking ('Det första spadtaget togs den 2 september 1966'), though neither EN nor SV attaches an inline citation to this specific claim.",
          "opened": "1975-08-31",
          "segment": {
            "fromStopIndex": 8,
            "toStopIndex": 12
          },
          "sources": [
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "Groundbreaking occurred on 2 September 1966 and the line was opened nine years later on 31 August 1975, between T-Centralen and Hjulsta via Hallonbergen.",
              "tier": "tertiary",
              "title": "Blue line (Stockholm Metro) — Wikipedia (T-Centralen–Hjulsta opened 31 Aug 1975)",
              "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "kind": "other",
              "publisher": "Wikipedia (EN)",
              "quote": "T-Centralen–Hallonbergen–Hjulsta: Sunday 31 August 1975",
              "tier": "tertiary",
              "title": "Blue line (Stockholm Metro) — Opening dates table",
              "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)#Opening_dates",
              "via": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 4
        },
        {
          "confidence": "medium",
          "constructionStart": "1966",
          "geometryRef": "stockholm-10",
          "id": "stockholm-blue-hjulsta-1975",
          "kind": "extension",
          "label": {
            "en": "Blue line NW spur: Hjulsta → Rinkeby"
          },
          "notes": "[Date chase 2026-06-12] Construction start (1966) is not singled out for the Hjulsta spur separately; it derives from the trunk-line groundbreaking of 2 September 1966 shared across the original Blue Line build. [Opening-date chase 2026-06-13] The 'NW spur Hjulsta→Rinkeby' label is slightly misleading: Rinkeby lay on the original 1975 Hallonbergen–Hjulsta route, so this segment opened simultaneously with the trunk on 31 Aug 1975, not as a later spur.",
          "opened": "1975-08-31",
          "segment": {
            "fromStopIndex": 0,
            "toStopIndex": 2
          },
          "sources": [
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20251225200538/https://en.wikipedia.org/wiki/Hjulsta_metro_station",
              "kind": "wikipedia",
              "quote": "The station was opened on 31 August 1975 as the northern terminus of the first stretch of the Blue Line from T-Centralen.",
              "tier": "tertiary",
              "title": "Hjulsta metro station — Wikipedia (opened 31 Aug 1975)",
              "url": "https://en.wikipedia.org/wiki/Hjulsta_metro_station"
            },
            {
              "accessedAt": "2026-06-12",
              "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "kind": "other",
              "publisher": "Wikipedia (English)",
              "quote": "Groundbreaking occurred on 2 September 1966 and the line was opened nine years later on 31 August 1975, between T-Centralen and Hjulsta via Hallonbergen.",
              "tier": "secondary",
              "title": "Blue line (Stockholm Metro) — Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "via": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 2
        },
        {
          "confidence": "medium",
          "geometryRef": "stockholm-10",
          "id": "stockholm-blue-kungstradgarden-1977",
          "kind": "extension",
          "label": {
            "en": "SE extension: T-Centralen → Kungsträdgården"
          },
          "opened": "1977-10-30",
          "segment": {
            "fromStopIndex": 12,
            "toStopIndex": 13
          },
          "sources": [
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20251031131836/https://en.wikipedia.org/wiki/Kungstr%C3%A4dg%C3%A5rden_metro_station",
              "kind": "wikipedia",
              "quote": "It is the end station of line 10 and line 11, and was opened on 30 October 1977, as the 91st station and part of the one-station extension from T-Centralen.",
              "tier": "tertiary",
              "title": "Kungsträdgården metro station — Wikipedia (opened 30 Oct 1977)",
              "url": "https://en.wikipedia.org/wiki/Kungstr%C3%A4dg%C3%A5rden_metro_station"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "kind": "other",
              "publisher": "Wikipedia (EN)",
              "quote": "T-Centralen–Kungsträdgården: Sunday 30 October 1977",
              "tier": "tertiary",
              "title": "Blue line (Stockholm Metro) — Opening dates table",
              "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)#Opening_dates",
              "via": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 1
        },
        {
          "confidence": "medium",
          "constructionStart": "1980",
          "geometryRef": "stockholm-10",
          "id": "stockholm-blue-vastraskogen-1985",
          "kind": "extension",
          "label": {
            "en": "Line 10 rerouted via Sundbyberg: Rinkeby → Västra skogen"
          },
          "notes": "[Date chase 2026-06-12] No Wikipedia source confirms the 1980 construction start; a primary source (SL / Spårvägar i Stockholm historical records) would be needed to substantiate it. [Opening-date chase 2026-06-13] SV wiki names the eastern endpoint 'Rissne' while EN names it 'Rinkeby'; these are adjacent stations on the same section opened together, so the year/date is consistent.",
          "opened": "1985-08-19",
          "segment": {
            "fromStopIndex": 2,
            "toStopIndex": 8
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "The next section opened, on 19 August 1985, was between Västra skogen and Rinkeby via Sundbybergs centrum. At that time, line 10 was diverted over this section, and no more passenger trains operated on the Hallonbergen–Rinkeby section.",
              "tier": "tertiary",
              "title": "Blue line (Stockholm Metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101071329/https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)",
              "kind": "wikipedia",
              "title": "Blå linjen (Stockholms tunnelbana) — Wikipedia (sv) (Västra skogen–Rissne, line 10 rerouted 19 Aug 1985)",
              "url": "https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)"
            },
            {
              "accessedAt": "2026-06-13",
              "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "kind": "other",
              "publisher": "Wikipedia (EN)",
              "quote": "Västra skogen–Sundbybergs centrum–Rinkeby: Monday 19 August 1985",
              "tier": "tertiary",
              "title": "Blue line (Stockholm Metro) — Opening dates table",
              "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)#Opening_dates",
              "via": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
            }
          ],
          "stationCount": 5
        }
      ],
      "sources": [
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Blue line (Stockholm Metro) — Wikipedia",
          "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
        },
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20260101071329/https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Blå linjen (Stockholms tunnelbana) — Wikipedia (sv)",
          "url": "https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)"
        }
      ]
    },
    {
      "cityId": "stockholm",
      "color": "#0094cd",
      "displayNumber": "11",
      "id": "stockholm-line-11",
      "name": {
        "en": "Blue Line 11 (Kungsträdgården ↔ Akalla)",
        "sv": "Blå linjen 11"
      },
      "phases": [
        {
          "confidence": "low",
          "constructionStart": "1966",
          "geometryRef": "stockholm-11",
          "id": "stockholm-blue-hallonbergen-1975",
          "kind": "initial",
          "label": {
            "en": "Blue line 1975 route: Västra skogen → Hallonbergen"
          },
          "notes": "[Date chase 2026-06-12] Groundbreaking precisely dated 2 September 1966 by both EN and SV Wikipedia; the 1966-1975 span matches the articles' 'nine years later' framing. No inline refs attached to the groundbreaking sentence, so no further primary/news sources were chasable.",
          "opened": "1975-08-31",
          "segment": {
            "fromStopIndex": 3,
            "toStopIndex": 6
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "Groundbreaking occurred on 2 September 1966 and the line was opened nine years later on 31 August 1975, between T-Centralen and Hjulsta via Hallonbergen.",
              "tier": "secondary",
              "title": "Blue line (Stockholm Metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20260101071329/https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)",
              "kind": "wikipedia",
              "title": "Blå linjen (Stockholms tunnelbana) — Wikipedia (sv) (1975 opening via Hallonbergen)",
              "url": "https://sv.wikipedia.org/wiki/Bl%C3%A5_linjen_(Stockholms_tunnelbana)"
            }
          ],
          "stationCount": 3
        },
        {
          "confidence": "low",
          "geometryRef": "stockholm-11",
          "id": "stockholm-blue-akalla-1977",
          "kind": "extension",
          "label": {
            "en": "NW terminus: Hallonbergen → Akalla (via Kista)"
          },
          "opened": "1977-06-05",
          "segment": {
            "fromStopIndex": 0,
            "toStopIndex": 3
          },
          "sources": [
            {
              "accessedAt": "2026-06-05",
              "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
              "kind": "wikipedia",
              "quote": "On 5 June 1977, the branch from Hallonbergen to Akalla opened.",
              "tier": "secondary",
              "title": "Blue line (Stockholm Metro) - Wikipedia",
              "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
            },
            {
              "accessedAt": "2026-06-02",
              "archivedUrl": "https://web.archive.org/web/20251224064144/https://en.wikipedia.org/wiki/Akalla_metro_station",
              "kind": "wikipedia",
              "title": "Akalla metro station — Wikipedia (Hallonbergen–Akalla opened 5 Jun 1977)",
              "url": "https://en.wikipedia.org/wiki/Akalla_metro_station"
            }
          ],
          "stationCount": 3
        }
      ],
      "sources": [
        {
          "accessedAt": "2026-06-02",
          "archivedUrl": "https://web.archive.org/web/20260312180408/https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)",
          "kind": "wikipedia",
          "tier": "tertiary",
          "title": "Blue line (Stockholm Metro) — Wikipedia",
          "url": "https://en.wikipedia.org/wiki/Blue_line_(Stockholm_Metro)"
        }
      ]
    }
  ],
  "name": {
    "en": "Stockholm",
    "sv": "Stockholm"
  }
}