Find below all current and upcoming closures on RER Line A.
Last modified on 3 November 2026
1 min read
Facebook is disabled. Authorize cookies to access to this feature.
AllowPersonalizingAddtoany is disabled. Authorize cookies to access to this feature.
AllowPersonalizing
Twitter is disabled. Authorize cookies to access to this feature.
AllowPersonalizingAddtoany is disabled. Authorize cookies to access to this feature.
AllowPersonalizing
Linkedin is disabled. Authorize cookies to access to this feature.
AllowPersonalizingAddtoany is disabled. Authorize cookies to access to this feature.
AllowPersonalizing
In 2026, several temporary closures of the RER A are scheduled to allow essential works. These operations aim to modernize infrastructure, strengthen safety, and improve passenger comfort. They require targeted service interruptions to ensure efficient and safe operations for everyone.
During these periods, replacement transport services will be provided. However, passengers are encouraged to postpone journeys where possible during these times.
Upcoming works
As part of infrastructure maintenance and renewal works in Achères, RER A services will be suspended on the following dates:
From 12 October to 6 November 2026 inclusive, every Monday to Friday evening from 9:50 p.m. onwards;
From 16 to 27 November 2026 inclusive, every Monday to Friday evening from 9:50 p.m. onwards.
Replacement bus services will be provided to allow passengers to continue their journeys.
In addition to these evening disruptions, the first departure from Cergy–Le Haut will be cancelled every day from Tuesday to Saturday, from 27 October to 7 November 2026.
During this period:
From Tuesday to Friday, the first train normally departing from Cergy–Le Haut (OPEN02) will instead start from Maisons-Laffitte; On Saturdays, the first train normally departing from Cergy–Le Haut (OPPE14) will instead start from Maisons-Laffitte.
As a result, these first services will not operate between Cergy–Le Haut and Maisons-Laffitte.
The first departure from Cergy–Le Haut will be at 5:11 a.m. (service NATO04 from Tuesday to Friday and OPPE20 on Saturdays).
These disruptions will enable teams to carry out maintenance work on the Cergy branch, as well as infrastructure renewal operations in the Achères area.
As part of maintenance works, RER A services will be suspended on the following dates:
From 9 to 13 November 2026 inclusive, from 10:00 p.m. onwards;
From 30 November to 11 December 2026 inclusive, Monday to Friday, from 10:00 p.m. onwards.
Replacement bus services will operate between Nanterre-Université and Cergy–Le Haut, as well as between Nanterre-Université and Poissy, to allow passengers to continue their journeys.
website.
