Work on the RER B: current and forthcoming closures

Over the coming months, a number of new features are in store for public transport users in Paris and the surrounding region. While new trains will soon be running on metro line 10, Val-de-Marne will see the birth of Câble 1, the first cable car in the Paris region.

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But passengers will also have to contend with further traffic disruptions due to new modernization work. This is the case on metro line 6, RER line A and RER line B. " Work will resume on RER line B, in order to maintain, modernize and prepare for the arrival of future trains " warned RATP on its website at the start of the year.

The work is currently scheduled to take place between January and May. Several sections of this busy RER line are affected. Work resumed on the RER B line on January 6, with traffic scheduled to be interrupted until Wednesday April 30, 5 evenings a week, between Gare du Nord and Aéroport Charles de Gaulle 2-TGV / Mitry-Claye.

Then, until Friday April 25, 2025, no trains will run between Châtelet-Les Halles and Aéroport Charles de Gaulle 2-TGV / Mitry-Claye on weekday evenings from 10:45pm.

Several weekend closures are also scheduled on the RER B. Over the Easter weekend, for example, traffic will be interrupted between Aulnay-sous-Bois and Aéroport Charles de Gaulle 2-TGV.

In addition, RATP is announcing further disruptions to the interconnection at Gare du Nord, following those in February and March. Interconnection will therefore be suspended again from Saturday April 19 to Monday April 21, 2025. As a result, " a change of train will be necessary to continue your journey, from the underground station and the surface station ", explains the Régie Autonome des Transports Parisiens, adding that " the transport offer will be greatly reduced by this interruption of the interconnection ". Find out more about the closures planned for RER B in spring 2025.

• To be read
• RER A: upcoming works and closures
• Metro line 6: upcoming closures and traffic interruptions
• Line 14: new works planned for 2025, timetable for closures

Traffic disruptions to be expected in the evening and on weekdays

• Between Gare du Nord and Aéroport Charles de Gaulle 2-TGV / Mitry-Claye
  Until Wednesday April 30, 2025: traffic interrupted in both directions, Monday to Friday, from 10:45pm until the end of service.
  
  
• Between Châtelet-Les Halles and Aéroport Charles de Gaulle 2-TGV / Mitry-Claye
  Until Friday April 25, 2025: traffic interrupted in both directions, Monday to Friday, from 10:45pm until the end of service. The following dates are not affected: April 18 and 21.

All-day traffic disruptions announced at weekends

• Between Aulnay-sous-Bois and Aéroport Charles de Gaulle 2-TGV
  From April 19 to 21, and again on May 3 and 4, 2025: traffic suspended in both directions, all day and evening, until the end of service.

Interconnection failure at Gare du Nord all day long

• From Saturday April 19 to Monday April 21, 2025: disruption of the RER B interconnection at Gare du Nord. "A change of train will be necessary to continue your journey, from the underground station to the surface station". In addition, the transport offer will be"greatly reduced" due to this break in the interconnection.

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What's the current traffic situation on the RER B? Here's real-time information on current and future disruptions on this public transport line in the RATP-SNCF network. [Read more]