The Autoroute Blanche (A40) was constructed to meet the touristic and industrial growth in the Arve Valley, to coincide with the opening of the Mont Blanc Tunnel, as well as the Haute-Savoie residents’ growing needs for increasing mobility. The first section, connecting Geneva-Vallard to Bonneville, was inaugurated in 1974. The last in 1991.
Located at the foot of Mont Blanc, ATMB manages the 110 km Autoroute Blanche (A40), which contains more than 200 structures, including 3 viaducts (Bellegarde, 1050 m; Bois d’Arlod, 300 m; Bardonnex, 360 m) and a tunnel (Vuache, 1.4 km).
More than 200 towns in Haute-Savoie and Ain are connected by the Autoroute Blanche (A40). A vital artery for Haute-Savoie, it has thirteen interchanges to meet the needs of a densely populated and economically active area.