SNCF: Status Update on RER Construction Projects

As every summer, SNCF plans to carry out repair and modernization work on the worn-out lines of the Île-de-France network.

SNCF takes advantage of the quiet summer in the French capital to perform repair or modernization work on the Île-de-France network. Every summer, certain sections of RER or Transilien lines are shut down or disrupted to allow agents to repair or renovate the lines.

This summer, 5 RER lines, 7 train lines, 9 metro lines, and 4 tram lines will require these works. Additionally, with a factory train, SNCF and RATP will carry out these works during the summer break. The factory train will be used on the RER B, C, D, and E projects as well as line K.

Details of the RER lines under construction are provided below or available via this link.

RER Lines Under Construction

The five RER lines will be under construction this summer.

RER A will experience service interruptions on certain segments in August. From August 9 to 18 between Nation and Val de Fontenay, as well as between Nation and Fontenay-sous-Bois, RER A will be stopped. You will need to take substitute buses. Moreover, from August 5 to 20, no RER trains will run between Cergy-Le Haut and Conflans-Fin d’Oise.

RER B will be halted from July 22 to August 25 between Bourg-la-Reine and Robinson. In both directions, from May 29 to August 27, it will not stop at Bagneux. Additional work to adapt the existing network for TGV and other interregional trains is also planned. Details below:

RER C will also experience service disruptions. On July 1, 2, 8, and 9, RER C trains will run without stops between Choisy-le-Roi and Juvisy. Moreover, during the summer break, from July 15 to August 26, RER C will not run between Avenue Henri Martin, Javel, and Austerlitz.

Work on the Chartres and Gallardon bridges will also disrupt traffic on RER B and C respectively until 2024. Therefore, between Pont de Rungis and Massy Palaiseau, no trains will run from July 15 to August 26.

What you need to know about the RER D construction work:

• July 10 – 29 and July 31 – August 26: trains operate in only one direction;
• During weekdays, trains run from 4:25 am to 9 am (towards Paris only) and from 4:35 pm to 9 pm (towards the provinces) during this period;
• On weekends, trains run in the morning until 2:55 pm (> Paris) and from 3 pm to the end of service in the other direction;
• Additional work in Maisons-Alfort-Alfortville is also planned for June.

Finally, the RER E (and line P) will experience circulation disruptions in the form of cancellations. Here is a summary table:

More work is planned on the RER E network:

• The Chelles Gournay station will not be served on the weekends of July 29-30, August 5-6, August 11-12, August 19-20, and August 26-27;
• During the same periods, Vaires Torcy station will not accommodate travelers heading to Paris;
• From July 5 to August 27, no trains will run between Meaux and La Ferté Milon stations;
• From July 14 to 16, no trains will operate on the Coulommiers and Provins branches.
• From July 3 to August 27, Nangis station will not be served.

SNCF and the Île-de-France region carry out these works during the summer period to avoid disturbing residents of the capital, only tourists who come in large numbers to visit!

Also read: Le Mans, transportation tickets available on SNCF Connect