A41 Motorway

19.6 km of motorway between Annecy and Geneva - Concession

Linear Projects (motorways)

France, 2005-2008

General description

Gravity rate

MAIN CHARACTERISTICS

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

 

Concessionaire's official website

Consortium

BOUYGUES TRAVAUX PUBLICS 50% (lead firm) / GFC CONSTRUCTION /QUILLE 20% / DTP TERRASSEMENT 15% / COL

Project owner

ADELAC

Key figures

3,065 m

of twin-tube tunnel, excavated by TBM

4

major viaducts

29

month work period

Locations

https://maps.google.fr/maps/ms?authuser=0&vps=1&hl=fr&ie=UTF8&msa=0&output=kml&msid=215408146226635276623.0004d004bdc6f1a8ccb3c

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