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Autoroutes et tunnel du Mont-Blanc

French transport company operating the Autoroute Blanche (A40), the RN205 and the Mont Blanc Tunnel.

Last updated September 15, 2026

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Overview

Autoroutes et tunnel du Mont-Blanc (ATMB) is a French transport company. Its network includes the Autoroute Blanche (A40) and the RN205, and it operates the Mont Blanc Tunnel linking France and Italy. ATMB offers toll badges (télépéage) and manages service and rest areas along its routes, with a customer relations centre in Nangy.

History

ATMB traces its origins to 1958, when the French company responsible for the Mont Blanc Tunnel works was created. The tunnel between France and Italy was built between 1959 and 1962, with excavation beginning on 1 June 1959 on the French side and the final rock section blasted on 2 August 1962. The Mont Blanc Tunnel opened in 1965 and has since become a reference in safety and a symbol of union between the two countries. ATMB today operates the Autoroute Blanche (A40), the RN205 and the Mont Blanc Tunnel, and provides toll badges and customer services from its centre in Nangy.

Products and positioning

  • Toll badges (télépéage)

    ATMB offers around ten télépéage subscription offers, including for daily commuters, occasional drivers, fully electric vehicles and professionals.

  • Service and rest areas

    ATMB manages service and rest areas on the A40 and RN205, such as the Houches, Passy le Fayet and Bonneville areas.

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