CFF - Line Bienne - Chaux-de-Fonds - Sonceboz portal of the Tournedos tunnel

Project description

Construction of a cut-and-cover tunnel using secant pile walls, with the concrete poured in two phases to permit continuous use of the road.

Intense three-day shutdown of the CFF line to undertake the earthworks in a top-down manner below the existing works; to complete the piled wall; to install the front wall; and to bring the tunnel into service.

Services provided

Phases :

• Scheme design
• Approval process for the plans
• Tender process
• Direction of the works