Mont Blanc Motorways and Tunnel Mont Blanc Motorways and Tunnel

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Geneva to Mont Blanc

A key route for Haute Savoie

ATMB is the concessionaire of the 110 km Autoroute Blanche (A 40), which links Châtillon-en-Michaille (Ain) and Le Fayet (Haute Savoie), with two branches to Switzerland (A401 A411).

The Autoroute Blanche connects around thirty towns and provides easy access to ski resorts.

70,000 ETC badges and over 20,000 customers daily

The Autoroute Blanche currently welcomes an average of 20,000 customers daily, with its traffic tripling during holiday periods. The sale of ATMB ETC badges has seen very strong growth. At the end of December 2013, nearly 70,000 badges were activated.

A mountain motorway, teams working 24 h/7

The Autoroute Blanche features many structures including three viaducts and a tunnel of 1.4 km. Throughout the year it requires many skills to be available 24/7, especially in winter. ATMB therefore employs 389 people for the 110 km Autoroute Blanche.


3 viaducts
- Bellegarde (1,050 metres)
- Bois d’Arlod (300 metres)
- Bardonnex (360 metres)
1 tunnel
- Vuache tunnel (length 1.4 kilometre)