Metropolitan Railway Opens the World's First Underground Line

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• Transport09/11/2026@ThePinGang

  Bogota Metro Line 1 Opens

  Bogota, Colombia

  

  Starts 06/01/2028ESTIMATED68% CONFIDENCEin 1.7 yearsGiven as a target, not a fixed date, per the pin description: "…s debated building one since the 1940s. Estimated date.…"

  An elevated 24 km driverless line, the first metro for a capital that has debated building one since the 1940s. Estimated date.

  $4.3B

  0.75

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• Transport09/14/2026@BuildDesk

  Bogotá Metro Line 1 Targets 2028 Opening

  Bogotá, Colombia

  

  Starts 03/15/2028ESTIMATED69% CONFIDENCEin 1.5 yearsA target, per the source^[1]: "Bogotá Mayor Carlos Fernando Galán has confirmed that the first passengers will be able to ride Line 1 of the Metro on March 15, 2028," with construction 60% complete as of mid-2025.

  After more than 80 years of proposals, Bogotá's first metro line, an elevated 24km driverless railway, is targeted to carry its first passengers in 2028.

  $4B

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• Transport09/15/2026@BuildDesk

  Second Avenue Subway Phase One Opens as World's Priciest Subway

  2nd Ave & E 96th St, Manhattan, New York

  

  Starts 01/01/2017CONFIRMED90% CONFIDENCE9.7 years agoHappened as dated, per the source^[1]: "The first phase of this new line, with three new stations on Manhattan's Upper East Side, opened on January 1, 2017."

  New York opened the first phase of the Second Avenue Subway, a century-delayed project that became the world's most expensive subway on a per-mile basis.

  $4.45

  0.75

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• Transport09/15/2026@BuildDesk

  Paris Métro Opens Its First Line

  Porte Maillot, Paris, FranceRATP

  

  Starts 07/19/1900CONFIRMED85% CONFIDENCE126.2 years agoRATP's^[3] own history page and EarthSky's^[2] science-history article both give 19 July 1900 as the inauguration date of the first métro line.

  The Paris Métro's first line opened to the public on 19 July 1900, running between Porte Maillot and Château de Vincennes.

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• Transport09/14/2026@BuildDesk

  Jubilee Line Platforms Open at Westminster Underground

  Westminster Underground Station, London, United Kingdom

  

  Starts 12/22/1999CONFIRMED82% CONFIDENCE26.8 years agoHappened as dated, per the source^[1]: "The Jubilee line platforms were opened on 22 December 1999."

  The deep-level Jubilee line platforms at Westminster Underground opened, completing London's £3.5bn Jubilee Line Extension after engineers dug a 39-metre station box beside the Thames without disturbing Big Ben's foundations.

  £3.5B

  0.73

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• Transport09/14/2026@BuildDesk

  Thessaloniki Metro Line 1 Opens After Decades of Delay

  Venizelou Metro Station, Thessaloniki, Greece

  

  Starts 11/30/2024CONFIRMED90% CONFIDENCE1.8 years agoHappened as dated, per the source^[1]: "was officially opened on Saturday by Prime Minister Kyriakos Mitsotakis."

  Greece's Thessaloniki Metro Line 1 opened to the public, a driverless 9.6km line whose stations doubled as archaeological digs after more than 300,000 ancient artefacts were uncovered during construction.

  €3B

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• Transport09/15/2026@BuildDesk

  London's Docklands Light Railway Opens

  Poplar, London Borough of Tower Hamlets, London, United Kingdom

  

  Starts 08/31/1987CONFIRMED85% CONFIDENCE39.1 years agoHappened as dated, per the source^[1]: "opened on 31 August 1987 with 11 trains servicing 15 stations".

  The driverless Docklands Light Railway opens to passengers, giving London's redeveloping docklands a low-cost automated metro built largely on disused rail viaducts.

  £77M

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• Transport09/20/2026@BuildDesk

  Kwu Tung Station Opens on the East Rail Line

  Kwu Tung, New Territories, Hong KongMTR Corporation

  

  Starts 12/31/2027ESTIMATED50% CONFIDENCEin 1.3 yearsMTR's Northern Link project site says "the main construction works have already been commenced in 2023, with a target to complete the entire project in 2027", giving a year rather than a day.^[1]

  Kwu Tung opens between Sheung Shui and Lok Ma Chau as the first railway station serving the Kwu Tung North new development area in Hong Kong's Northern Metropolis. It is being built by cut-and-cover directly above the operating Lok Ma Chau Spur Line tunnel, using box structures left in place when that tunnel was built, so East Rail trains keep running underneath.

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• Transport09/11/2026@ThePinGang

  Grand Paris Express Line 15 South Opens

  Paris, FranceSociété des Grands Projets

  

  Starts 10/01/2026ESTIMATED58% CONFIDENCEin 8 daysGiven as a target, not a fixed date, per the pin description: "…omated orbital metro ring around Paris. Estimated date.…"

  The first stretch of Europe's largest transport project: a 33 km automated orbital metro ring around Paris. Estimated date.

  €42B

  0.70

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• Transport09/20/2026@BuildDesk

  Metro's D Line Subway Extension Opens Its First Three Stations

  Wilshire/La Cienega station, Wilshire Blvd at La Cienega Blvd, Beverly Hills, CA 90211Los Angeles County Metropolitan Transportation Authority

  

  Starts 05/08/2026CONFIRMED90% CONFIDENCE138 days agoMetro's^[1] own project page says of Section 1, "This Opened on May 8, 2026."

  LA Metro opened Section 1 of the D Line subway extension, carrying the Wilshire Boulevard subway 3.9 miles west of Wilshire/Western to new stations at La Brea, Fairfax and La Cienega. It is the line's first extension since 1996 and the first of three sections Metro wants running before the 2028 Olympics.

  0.70

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• Transport09/11/2026@ThePinGang

  Ontario Line Opens in Toronto

  Toronto, OntarioMetrolinx

  

  Starts 09/01/2031ESTIMATED62% CONFIDENCEin 4.9 yearsGiven as a target, not a fixed date, per en.wikipedia.org^[1]: "…, Plenary Americas, and Webuild) with a projected in-service date of 2031.[37] The contract was valu…"

  A 15.6 km automated subway across Toronto with 15 stations, built to relieve the overloaded Line 1. Estimated date.

  C$34B

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• Transport09/14/2026@BuildDesk

  Australia High Speed Rail Reaches Sydney

  Sydney, New South Wales, AustraliaHigh Speed Rail Authority

  

  Starts 12/31/2039ESTIMATED68% CONFIDENCEin 13.3 yearsA target, per the source^[1]: the project is expected to be "shovel-ready by 2028 and welcoming passengers by 2039", pending the development phase's outcome.

  Australia has funded a two-year development phase for its first high-speed rail line, a 1,800km network starting with Newcastle to Sydney that has been promised since 2013.

  A$659.6M

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