RATP. This busy metro line in Paris will be completely closed for several days for work

We will have to change our travel habits. We had already announced it: the metro line 9 will be entirely closed on several Sundays, and not only, this year from January 19, 2025. These closures occur due to modernization work and will impact Paris, Hauts-de-Seine and Seine-Saint-Denis.

Modernize the line

This work concerns “improving the piloting system trains,” explains Mohamed Chihi, director of the line. A first part of this modernization project aims to command postput into service in March 2020. New automatic regulation functions will be developed.

But what disrupted the line for several days a year directly affects the interior of the driver's cabin. In fact, a new embedded system facilitating driving will be put in place. It will “bring the trains closer together, guaranteeing more fluidity and regularity,” explains the director of line 9.

This novelty involves testing phases and therefore disruptions. So the line will be closed several days within the year in order to “be able to carry out these tests and ensure commissioning which will be operational at the beginning of August 2025”, he indicates.

What days will it be closed?

Line 9 traffic will be completely interrupted on the following days:

• Sunday January 19, 2025;
• Sunday February 2, 2025;
• Sunday February 16, 2025;
• Sunday March 9, 2025;
• Sunday March 30, 2025;
• The weekend of May 31 and June 1, 2025;
• At the beginning of August before the implementation of the new system.

Compensation buses

To find an alternative to these closures, and then that no station will be accessible between Pont-de-Sèvres, in Boulogne-Billancourt (Hauts-de-Seine) and Mairie-de-Montreuil, in Montreuil (Seine-Saint-Denis), the RATP will put in place replacement bus :

• Between Pont-de-Sèvres and Michel-Ange-Auteuil (to recover line 10 or T2);
• Between Nation and Mairie-de-Montreuil (to benefit from lines 1 or 6 or T3b), every 7 minutes. Without forgetting the numerous buses in the transport network.

RATP also pris contact with the cities of Montreuil and Boulogne-Billancourt, “the most impacted by these closures, according to Mohamed Chihi, to work in collaboration with them in order to avoid traffic constraints on the road”.

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