M11 extension to Rosny Bois-Perrier and then to Noisy-Champs

The M11 extension will link the current terminus at Mairie des Lilas to the Rosny-Bois-Perrier RER E station. It will facilitate travel to the east of Paris, notably in this sector of Seine-Saint-Denis, and will serve numerous facilities along its route.

Six new stations on the M11 extension will serve five towns: Les Lilas, Romainville, Noisy-le-Sec, Montreuil, and Rosny-sous-Bois. The project also covers the creation of a future maintenance centre at Rosny-sous-Bois and a new centralised control post for the M11 at Bagnolet.

Useful tips :

  1. Département 93

  2. Connections with the RER E

  3. Future connections with M15 and T1


  • Trains will run every 1 minute and 45 seconds, during peak hours.
  • The entire line will be replaced with new generation rolling stock.
  • Passenger capacity will be increased: 5 cars per train, compared to 4 currently.
  • Connections with the RER E, the T1 extension from Noisy-le-Sec to Place Carnot (Romainville), the future eastern M15 station at Rosny-Bois-Perrier as well as with the bus lines serving the area.

Service quality

The M11 extension enhances the value of business centres and public facilities (André Grégoire intercommunal hospital complex, Rosny 2 and Domus shopping malls, Londeau-area high schools, etc.). Existing stations will be adapted, and some will be modernised.

To further improve passenger comfort and safety, new access points will be created with stairs, escalators and elevators. To accommodate the new trains, the platforms will have to be reinforced and raised.

Key figures

6 new stations will be created serving five communes. The M11 extension is expected to serve more than 85,000 passengers each day.


  • December 2009: approval of the Main Features and Objectives Document (DOCP)
  • September-October 2010: prior consultation
  • February 2013: approval of the project’s functional diagram and public hearings support documents
  • September-October 2013: public hearings
  • 2013-2014: pre-project draft design studies (AVP)
  • 2014: project declaration (February), declaration of public utility (May), approval of pre-project studies (December)
  • 2015: start-up of construction phase
  • spring 2024: start-up of service, phase 1

Project players

STIF and RATP are the joint contracting authorities for the M11 extension project.

Project costs and financing

The cost of the project is estimated at 1,298m € (2014 value), including 1,084m € for the line extension and 214m € for the adaptation of the existing line and stations.

Special events

On 10 December 2016, a ground-breaking ceremony was held in the presence of the financial partners, the mayors of the towns served by the M11 extension, and APPL11 members, to mark the start-up of construction on the extension’s first station, La Dhuys, in Rosny-sous-Bois. The ground-breaking ceremony was followed by events in the five towns served by the extension, with activities for local residents to celebrate the start-up of construction work on this highly-awaited extension.

Regular news bulletins

Discover all the news related to the project in the tabs below [These contents are not available in English]:

Après celui de la RATP, le 28 novembre dernier, le Conseil d’Administration d'Ile-de-France Mobilités du mercredi 10 décembre 2014,

  • a adopté la convention de financement relative aux études de projet pour un montant de 60 M€, financée conformément au protocole Etat-Région du 19 juillet 2013.
  • a également approuvé l’avant-projet de ce prolongement et l’adaptation des stations de la ligne existantes, pour un coût d’investissement global s’élevant à 1,3 Mrd€.
• Download the leaflet on the project [This content is not available in English]