SYSTRA selected by SNCF Réseau for the New Southwest Line

SYSTRA France has been selected for the general and technical project management assistant (AMO) contract for the entire New Southwest Line (LNSO) by GPSO (SNCF Réseau), the project owner. Our teams will be involved in all phases of the design and construction of this new line, which will reduce travel times between the major cities in the southwest of the country.

At SYSTRA France, we are proud to have supported our client SNCF for many years, with whom we share an ambitious and sustainable vision of rail mobility. This trusting, long-term collaboration perfectly illustrates our commitment to contributing to structuring projects that serve local communities and their residents. Our teams based in Toulouse and Bordeaux are particularly pleased to contribute to the realisation of this magnificent project.

Population growth in the Occitanie and Nouvelle-Aquitaine regions and the desire to improve daily and long-distance mobility through rapid, low-carbon solutions have made this project necessary. The LNSO will strengthen the rail network at the local, national, and European levels. The contract with SYSTRA was signed thanks to financing by the state, the territoiral authorities, and the European Union.

SYSTRA’s hundred or so employees, primarily located in Bordeaux and Toulouse, will bring a wide range of expertise and skills. Until 2034, SYSTRA France will be responsible for accompanying the GPSO for:

The first stage of the project will be the finalisation of the Bordeaux-Toulouse link programme, in order to prepare the design-build tenders to come.

This new high-speed line, an extension of the Tours-Bordeaux high-speed line, which opened in 2017, will create a new, fast and reliable link between the Nouvelle-Aquitaine and Occitanie regions, as far as Montpellier and Perpignan, the Mediterranean, and between France and Bayonne and Spain at Irun. The two branches Bordeaux-Dax and Bordeaux-Toulouse will also be connected to each other, providing a unique direct Toulouse-Spain line.




The entire route will be over 400km long, in a Y-shape. This line, dedicated entirely to passengers, will ease the existing line, allowing for the development of freight traffic and a greater number of regional express trains (TER), notably as part of the metropolitan regional express services (SERM) planned for the Bordeaux and Toulouse metropolitan areas.

The project also includes the redevelopment of the railway network north of Toulouse, on which SYSTRA France has been involved since 2021 as full project manager.

www.systra.com