You’ve been looking forward to it, and in 2026 it will be a reality. Part of line 18 will be accessible to passengers from the end of 2026. It will serve several stations between Massy-Palaiseau and Christ-de-Saclay. This project is part of the new Grand Paris Express lines! But that’s not all: this new line will take an impressive aerial route over the longest viaduct in France…
A new metro line for 2026
At the end of 2026, line 18 will finally be inaugurated. At least, part of it, which will serve several stops such as Polytechnique and the University of Paris-Saclay between Massy-Palaiseau and Christ-de-Saclay stations. This entirely aerial section will fly over the Grand Paris for almost 7 km thanks to an immense viaduct, the longest in France. Enough to make your daily commute a little more pleasant!
This section will be used by ten automatic electric trains, each able to accommodate up to 350 passengers. Inside, RATP promises a high level of comfort , with air-conditioning in all trains, USB sockets for recharging phones and access to 5G and Wi-Fi. People with reduced mobility will also have easy access to the trains, thanks to dedicated spaces.
However, you’ll have to be patient if you want to travel on the whole of line 18,which will be delivered in full during 2030.