France, 2005-2008
Gravity rate
The dual two-lane motorway project comprises 4 viaducts—264 m, 262 m, 212 m, and 360 m—, a 3,065-m-long TBM-driven twin-tube tunnel beneath Mount Sion, a 290-m-long cut-and-cover tunnel, 13 overbridges, 12 underpasses, 560 m of retaining walls, interchanges, and a toll station.
Environmentally friendly solutions were implemented:
- landscaping,
- protection of flora and fauna,
- construction of more than 3,000 m of noise barriers.
Customer / concession authority : Ministry of Transport