The Tangentielle Nord rail project is designed to facilitate suburb to suburb trips around Paris. 28 kiometers long in total, the project will link Noisy-le-Sec and Sartrouville in Greater Paris and will serve 14 stations allowing transfers with the existing rail network.

The project includes the construction of new tracks, the widening of bridges, the creation of tunnels and the creation of stations.

The construction of the central part of the project between Epinay-sur-Seine and Le Bourget started in 2014 and we have been appointed to undertake the cost benefit nalysis of the East-West section as part of the preliminary studies.