Upgrading the network
We’re meeting the twin challenges of increased traffic and aging infrastructures with a sweeping programme of upgrades—some 1,750 projects in 2022. Many are in the Paris area, which accounts for 70% of passenger traffic.
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View maps of works projects across the network
Network upgrades
Select a station or line to see the network upgrades we’re planning to make.
Maintenance works on your line
Select a station or line to see the maintenance works on your line.
Be a part of it
Want a first-hand look at what we do? Follow our news feed, reported directly from our teams on the ground. Get all the details on our most ambitious works—or explore our innovative sustainability projects.