Métro/trains
We are extending our metro network
We are investing in several construction projects to extend or create metro lines.

In collaboration with STIF, our teams of engineers, contract authorities, project managers and territorial development agencies are thus mobilised throughout the Île-de-France region to offer new mobility solutions to local residents.

Line 1: extension from Château de Vincennes to Val de Fontenay

  • 7 km line extension
  • 3 new stations
  • 110,000 passengers expected each day
  • Start-up planned for 2030

For more information

Line 4: extension from Mairie de Montrouge to Bagneux

Line 10: extension from Gare d'Austerlitz to Ivry-Gambetta and Les Ardoines

Line 11: extension from Mairie des Lilas to Rosny-Bois-Perrier, then Noisy-Champs

Line 12: extension from Front Populaire to Mairie d’Aubervilliers

Line 14: extension from Saint-Lazare to Mairie de Saint-Ouen

Line 14: extension from Olympiades to Orly Airport

Line 14: Adaptation of M14 stations

We are also a key player in the construction of the Grand Paris Express, an ambitious programme that is conducted by Société du Grand Paris (SGP) and which is part of the comprehensive Nouveau Grand Paris project. This includes the development and modernisation of the existing network as well as the extension of four metro lines, to bring Paris closer to its surrounding suburbs and to foster greater suburb-to-suburb mobility.

Metro RER Extension réseau Travaux