The contract consists of the extension of the underpass corridor in Froyennes station:

Side track A:

• Construction and installation of an extension for the existing corridor under tracks.

It is a precast concrete element based on micropiles;

• Construction and installation of a precast concrete retaining wall that will allow the local extension of the

way;

Side B:

• Construction and installation of a metal service track over the entrance to the corridor under tracks.

The contract consists of the extension of the corridor-underpass in Froyennes station:

Side track A:

• Construction and installation of an extension for the existing corridor under tracks.

It is a precast concrete element based on micropiles;

• Construction and installation of a precast concrete retaining wall that will allow the local extension of the track platform;

Side B:

• Construction and installation of a metal service track over the entrance to the corridor under tracks.