Crossing the Col du Lautaret, between Briançon and Grenoble
The Marionnaise gallery is in a very poor state of repair and will be rebuilt. It will be partially demolished and replaced by a 490 m closed structure. The width of the gallery will be increased from 8.7 m to 10.9 m, to accommodate a lane reserved for cyclists in the uphill direction. The paravalanche will also be extended. A partnership has been signed between the consortium headed by Razel-Bec and the Hautes-Alpes departmental council.
