As work on extending and expanding the Parisian metro network has been progressing in recent years (quite literally!), it seems that Île-de-France Mobilités (IDFM) has no intention of stopping there, with numerous projects at various stages of development. Among these, a new extension of tram line 1 heading west, which is becoming increasingly concrete… and could well come to fruition in just a few years!
From East to West
For several years now, extension projects have been announced for Paris's oldest tram line. To the east, the idea is straightforward: extend the line all the way to Val-de-Fontenay station. And work has already begun, particularly to develop the various spaces across the six new towns that will be served by the tram. To the w
rave; however, things are a bit more complex in the west. Indeed, a first section, connecting the current Asnières terminus to Petit-Colombes, is already under construction. And while it should be completed in 2024, it seems the line will finally be operational in… 2032. But the westward extension shouldn't stop there, since the T1 should then go all the way to Rueil-Malmaison. An expansion that's becoming increasingly concrete, and whose opening is hoped for in… 2031 – and should therefore operate independently for a few months!Extension du tramway T1 à Colombes : de gros travaux de démolition ont eu lieu, comme en témoigne cette vidéo. D'autres travaux préparatoires restent en cours pic.twitter.com/dVBDX6NYSI
— AUT / FNAUT IDF (@Asso_usagersidf) September 18, 2021
Dozens of additional stations
In total, line T1 should gain no fewer than 41 new stations over the coming years (plus the renovation of six existing stops), for a total route of no less than 40 km from end to end. A massive construction project, certainly, but equally essential, as it will create a number of interconnections with RER lines A and E, for example, but also the future line 15, both to the east and west. And if 2031 seems far away, don't worry: to the east, the opening of a first section — from Bobigny-Pablo Picasso to Rue de Rosny in Montreuil — should take place before the end of the year, and for the rest, you'll only need to wait until 2029!I don't see any French text to translate in your message. It appears you've only included an HTML closing tag `
`. Could you please provide the French text you'd like me to translate? Once you share it, I'll be happy to translate it into friendly, joyful English while preserving all HTML formatting.Extension du tram T1 à Nanterre et Rueil : 37 M€ sont attribués pour la fin des études et les premiers travaux en 2027. Mise en service envisagée en 2031 pic.twitter.com/pJhuvpiys6
— AUT / FNAUT IDF (@Asso_usagersidf) November 28, 2025
