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The Project 

The South Lyon rail bypass (CFAL) is a proposed new twin-track system for freight and passenger trains (high-speed and regional).
This new infrastructure covering a distance of approximately 25 km on the south section (vs. 50 km on the north section) will meet growing demand for freight traffic on the North-South route passing through the Lyon region. It is among several major additions to the transport infrastructure in the Rhône-Alpes region.
The bypass will not only make the freight transport offering more attractive and competitive but also free up capacity on existing lines, especially at Lyon Part-Dieu station, to boost regional passenger traffic.

Challenges

Project owner
SNCF RESEAU

Period
2011 – on going

Key figures
25 km freight and passenger railway line to the east of Lyon
A new bridge across the Rhône River south of Lyon
A 2.7-3.7 km tunnel

Challenge
The project involves digging a 2.7-3.7 km tunnel, as well as building a new 550-750 m bridge across definitive design selected.

The Assignment

RFF (the former name for SNCF Réseau) has commissioned setec to propose the preliminary design and documents for the public enquiry, aiming to define the technical specifications and estimate costs.
This preliminary phase will define the 500 m section that will be presented in the public consultation before making a declaration of public interest.
setec als is managing all the technical and environmental design aspects of the project with the help of setec ferroviaire for the rail equipment and setec international for the acoustic and landscaping aspects.