Mont Cenis-Fréjus Tunnel

Upgrading of tunnel to high-speed TGV gauge

Renovation

France, 2006-2008

General description

Major structural renovation under the project for modernisation of the Mont Cenis/Fréjus railway tunnel on the line from Modane to the Italian border. The work was combined with enlargement to the European railway traffic gauge and safety enhancements in the French section, i.e. in 7 km of tunnel.

Package No. 1 involved civil works and Package No. 2 communication-voltage and power-voltage systems.

MAIN CHARACTERISTICS

- Track removal and relaying

- Masonry repair

- Upgrading to loading gauge GB1

- Lowering of the track formation

- Creation of recesses and a reservoir

- Civil works outside the tunnel

The consortium was also in charge of the integrated ventilation system, under a firm contract, supply of locomotives, and renewal of track between Modane and Fréjus.

Consortium

bouygues travaux publics 50% (lead firm) / SECO RAIL 22,5 % / NOUVETRA 27,5 % / ETDE

Project owner

RESEAU FERRE DE FRANCE

Key figures

7 km

of tunnel track formation lowered

1

jobsite with live traffic

1871

tunnel opening date

Locations

https://maps.google.fr/maps/ms?authuser=0&vps=2&ie=UTF8&msa=0&output=kml&msid=215408146226635276623.0004d11de5e11ef5bfab1

Associated Projects

Chatou river barrage
Chatou river barrage

Reconstruction of a barrage on the Seine

More info