er-b-perturbations-e-te-2025-3-mois-le-bonbon-pari

This RER line will be partially closed for 3 months this summer

undefined undefined 17 mai 2025 undefined 07h30

The Editor

© DavidFM / Shutterstock

Taking public transport in Paris is never an easy task! There's been a slew of partial and total line closures that have been happening since the start of the year due to construction, renovations, and other upgrades. The bad news is that it doesn't look like things will be getting any better in the coming months, especially with summer closures starting to be announced.

Ah, the RER… A vast subject! It’s often hated by Parisians, who swear by the metro and see it as a notorious place where Satan reigns supreme. On the flip side, it’s praised by suburbanites, who view it as a gateway to enjoy the pleasures of the capital in just a few minutes. Unfortunately, everyone agrees that, no matter the line, its operation is far too often chaotic. And bad news, this announcement might just prove them right.


Three months of mixed feelings for the B

When you live in Paris and take the transport every day, you have to be patient. But we admit that with this new announcement of summer closures, we’re kind of at our wit’s end. And we believe we’re speaking for all users of the RER B, just learned that there will be no less than 3 months of summer disruptions on their beloved line. And overall, considering the extent of these disruptions, we can guarantee that, no matter which section of the line you take, you're affected.

So yes, we know, it’s pretty logical to do this in the summer, because people go on vacation, and the capital empties out, and so do its transports, and blah blah blah. However, some of us are stuck in the heart of Paris during the heatwave to pay their rent, and the RER B usually provides a great getaway option for some practical and affordable escapes on the weekends.


A somewhat complex schedule…

Behind this extremely untimely closure lies maintenance and modernization work on the lines. And while, in principle, we’re not against a little refresh, the problem is that this project will cause traffic interruptions… from July to September! And we won’t lie to you, it’s going to be a bit of a hassle for everyone.

Interruptions on weeknights - Between Gare du Nord and Aéroport Charles de Gaulle 2-TGV – Mitry-Claye: from July 1 to July 31 (except on July 11 and 14) and from August 25 to September 30 starting at 10:45 PM, Monday to Friday, in both directions. - Between Denfert-Rochereau and Aéroport Charles de Gaulle 2-TGV – Mitry-Claye: from August 1 to August 22 (except on August 13 and 15) starting at 10:45 PM, Monday to Friday, in both directions. Interruptions during the week and all day on weekends - Between La Croix de Berny and Massy-Palaiseau: from July 15 to August 27 inclusive, traffic completely interrupted.interrupted traffic in both directions.

Interruptions all day during the weekend

- Between Gare du Nord and Mitry-Claye: from Friday, August 15 to Sunday, August 17 inclusive, service will be interrupted in both directions.
- Between Gare du Nord and Charles de Gaulle Airport 2-TGV: Saturday, September 13 and Sunday, September 14, service will be interrupted in both directions.
- Between Gare du Nord and Aulnay-sous-Bois: Sunday, September 21, service will be interrupted in both directions.
- Between Denfert-Rochereau and La Croix de Berny – Robinson: Saturday, September 27 and Sunday, September 28, service will be interrupted in both directions.

Interconnection disruption at Gare du Nord all day

From July 12 to July 14: no interconnection of the RER B at Gare du Nord. A train change will be necessary.

And if our list has confused you more than anything else, we suggest you check out...

You can find the entire list of service disruptions directly on the RATP website (it's right here) for a bit more clarity. And whatever happens, we wish you all lots of courage to face these three months.