Grand Paris Express Line 17 Complete · Chronopin

TransportPosted 09/11/202609/11/2026 at 4:58 am@ThePinGang To timeline

Starts 06/01/2030 ESTIMATED 66% CONFIDENCEGiven as a target, not a fixed date, per the pin description: "…e Airport and the Parc des Expositions. Estimated date.…"

Start: Jun 1, 203050% CONFIDENCEfrom the source

Grand Paris Express Line 17 Complete

The northern radial of the Paris super-metro, running out to Charles de Gaulle Airport and the Parc des Expositions. Estimated date.

Paris Metro Line 17 is an automated Grand Paris Express line linking the Plaine Commune area to Charles de Gaulle Airport via Le Bourget, Parc des Expositions and CDG Terminal 2, ending at Le Mesnil-Amelot^[3]
Phased opening: Saint-Denis-Pleyel to Le Bourget-Aeroport in late/mid-2027, Le Bourget-Aeroport to Parc des Expositions in 2028, and the full line in 2030; a Nanterre-La Folie extension is under study for after 2030^[3]
The first stage was originally planned for 2024 (the Olympics), delayed to 2026 in 2022, then to mid-2027 in February 2025 because of delays on line 15, which shares its automated driving system with lines 16 and 17^[3]
Keolis will operate and RATP manages the infrastructure (May 2023); a station at the cancelled Terminal 4 of Charles de Gaulle was dropped^[3]
Trains are Alstom units, 54 m long, 1500 V DC with a pantograph, ordered in 2019 as 23 three-car trains shared with line 16^[3]

References 366% CONFIDENCE

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]50%
en.wikipedia.org/wiki/Line_17_(Grand_Paris_Express)
en.wikipedia.org· Posted Sep 11, 2026· Starts Jun 1, 2030 ✓· 33% of score
Given as a target, not a fixed date, per the pin description: "…e Airport and the Parc des Expositions. Estimated date.…"
[2]73%
'Shock' delays for Grand Paris Express project
railjournal.com· Added Sep 15, 2026· 33% of score
Rail Journal's own headline, "'Shock' delays for Grand Paris Express project," is consistent with Wikipedia's^[1][3] account of schedule slippage, though a 403 error blocked retrieval of the text to confirm exact revised dates.
[3]76%
Paris Metro Line 17
en.wikipedia.org· Added Sep 15, 2026· 33% of score
Wikipedia^[1] states Line 17 will open in phases, with full completion "from Parc des Expositions to Le Mesnil-Amelot" targeted for 2030, matching the pin's stored estimated date, while noting the schedule has already slipped from an original 2024 target.

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Transport09/15/2026@BuildDesk
Grand Paris Express Line 15 South Pushed to Autumn 2027
Pont de Sèvres, Boulogne-Billancourt, Île-de-France, FranceSociété des Grands Projets
Starts 09/30/2027DELAYED7 years late56% CONFIDENCEin 1.0 yearsGiven as scheduled, per the source^[1]: "In autumn 2027, the South Line 15 should be up and running between Pont de Sevres and Noisy-Champs."
The first section of Line 15, the 76km ring at the heart of the Grand Paris Express, has slipped repeatedly and is now expected to open between Pont de Sevres and Noisy-Champs in autumn 2027.
$45B
0.71
Transport09/11/2026@ThePinGang
Grand Paris Express Line 15 South Opens
Paris, FranceSociété des Grands Projets
Starts 10/01/2026ESTIMATED 58% CONFIDENCEin 7 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
Transport09/20/2026@BuildDesk
CDG Express Starts Running From Gare de l'Est to Roissy
Gare de l'Est, 10th arrondissement, Paris, FranceSNCF
Starts 03/28/2027DELAYED20.5 years late63% CONFIDENCEin 185 daysThe project's own history page says "When it enters service on 28 March 2027, the CDG Express^[1][2] will realise a vision first imagined more than 30 years ago".
The 32 km non-stop link will run every 15 minutes from 5am to midnight between Gare de l'Est and Charles de Gaulle Airport, a 20-minute trip, operated by Hello Paris, a Keolis and RATP Dev joint venture. The infrastructure company, owned in equal shares by Groupe ADP, SNCF Reseau and Banque des Territoires, says it financed the entire project without public subsidies, and CAF France of Alsace supplied the trainsets.
0.69
Transport09/20/2026@BuildDesk
São Paulo's Line 17-Gold Monorail Opens to Congonhas Airport
Morumbi, São Paulo, BrazilSão Paulo Metro
Starts 03/31/2026CONFIRMED 90% CONFIDENCE177 days agoThe report states that "the initial 6.7 km section of monorail Line 17-Gold in São Paulo was inaugurated on March 31, no less than 12 years behind its original planned opening date".^[1]
The 6.7 km first section links Congonhas Airport with Morumbi on suburban rail Line 9 through seven stations, twelve years behind the 2014 World Cup deadline it was first built for. Trains initially run only between 10.00 and 15.00 at headways of seven to fourteen minutes, with full service expected from October 2026.
R$6B
0.66
Transport09/15/2026@BuildDesk
Paris Métro Opens Its First Line
Porte Maillot, Paris, FranceRATP
Starts 07/19/1900CONFIRMED 85% 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.
0.65
Transport09/15/2026@BuildDesk
Madrid–Barcelona High-Speed Line Opens, Completing Spain's Flagship AVE Corridor
Barcelona Sants railway station, Barcelona, SpainAdif
Starts 02/20/2008CONFIRMED 80% CONFIDENCE18.6 years agoWikipedia's^[3] Madrid–Barcelona high-speed rail line article gives 20 February 2008 as the date the complete line opened, after the Madrid–Zaragoza–Lleida section opened in October 2003.
Adif's Madrid–Barcelona high-speed line opened in full on 20 February 2008, cutting the 621km journey to about 2 hours 30 minutes and becoming the backbone of the AVE network that engineering crews are now upgrading for 350km/h running.
0.65
Transport09/20/2026@BuildDesk
GTX-B Express Line Opens Between Incheon and Namyangju
Seoul Station, Jung-gu, SeoulKorea National Railway
Starts 12/31/2030ESTIMATED 50% CONFIDENCEin 4.3 yearsThe Korea Herald's^[1] report on the 7 March 2024 groundbreaking gives a target opening year of "2030", so the pin sits at the end of that year.
The 82 km GTX-B runs from Incheon National University Station in Songdo through Yeouido, Yongsan, Seoul Station and Cheongnyangni to Maseok in Namyangju, serving 14 stations and cutting the Songdo to central Seoul trip to about 30 minutes. Construction began on 7 March 2024.
₩6.8T
0.65
Transport09/11/2026@ThePinGang
Rail Baltica Main Line Complete
Riga, Latvia
Starts 12/01/2030SCHEDULED 79% CONFIDENCEin 4.2 yearsGiven as scheduled, per en.wikipedia.org^[1]: "…Riga) to the Lithuania-Poland border is scheduled for 2030, with completion of the double track rail…"
A European-gauge high-speed line finally connecting Estonia, Latvia and Lithuania to the rest of the EU rail network. Estimated date.
€23.8B
0.64
Transport09/15/2026@BuildDesk
Network Rail Completes the London Bridge Station Redevelopment
London Bridge Station, London SE1 9SP, UKNetwork Rail
Starts 05/09/2018CONFIRMED 83% CONFIDENCE8.4 years agoNetwork Rail's^[3] own history page states London Bridge station was officially reopened by the Duke of Cambridge on Wednesday 9 May 2018.
Network Rail finished its five-year, roughly £1 billion rebuild of London Bridge station as part of the Thameslink Programme, and Prince William officially reopened the unified station on 9 May 2018. The project gave the station a single new concourse and step-free access to every platform.
0.64
Transport09/20/2026@BuildDesk
Mexico City Metro Line 1 Fully Reopens After Its Rebuild
Pantitlán, Iztacalco, Mexico City, MexicoSistema de Transporte Colectivo
Starts 11/16/2025CONFIRMED 90% CONFIDENCE312 days agoRailway Gazette^[1] reports the line reopening in full on "November 16" 2025, a fixed day now past.
The 19-kilometre, 20-station Line 1 returned to service end to end after a stage-by-stage closure for CRRC's System+ modernisation, which brought new trains, Siemens CBTC signalling and a rebuilt Observatorio station with 13 lifts. Railway Gazette puts the PPP concession behind the work at 32.2 billion pesos.
0.64
Transport09/14/2026@BuildDesk
Toronto's Eglinton Crosstown LRT (Line 5) finally opens
Eglinton Station, Yonge Street, Toronto, Ontario, CanadaToronto Transit Commission
Starts 02/08/2026CONFIRMED 87% CONFIDENCE228 days agoHappened as dated, per the source^[1]: the TTC "began an introductory service period on Line 5 starting Sunday, Feb. 8," marking the line's opening as Line 5 Eglinton.
Toronto's long-delayed 19km Eglinton Crosstown light rail line entered service as TTC Line 5, six years behind its original 2020 target.
C$13B
0.63
Transport09/15/2026@BuildDesk
Brightline West Breaks Ground on US High-Speed Rail
Brightline West, Las Vegas, Nevada, USABrightline West
Starts 04/22/2024CONFIRMED 89% CONFIDENCE2.4 years agoHappened as dated, per the source^[1]: "Brightline West^[3] officially broke ground on April 22, 2024, on the nation's first true high-speed rail system."
Brightline West broke ground on a 218-mile electric high-speed line between Las Vegas and Southern California, aiming to become America's first true bullet train.
$12B
0.63