Mont Blanc Motorways and Tunnel Mont Blanc Motorways and Tunnel

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Works : traffic informations

Roadworks and traffic information

- Les Houches - in both directions - from June 16 at 7 am to June 27 at 6 pm
. Type of work : road coating restoration, road marking installation.
. Traffic conditions : In both directions : circulation on one lane. In Geneva > Chamonix direction : interchange nr. 24 closed to traffic at the entrance and exit, as well as the exit of interchange nr 25. Deviation routes are set up.

- Les Houches - in both directions - from June 30 at 7 am to July 4 at 6 pm
. Type of work : road coating restoration, road marking installation.
. Traffic conditions : In both directions : circulation on one lane. In Chamonix > Geneva direction : interchange nr. 24 closed to traffic at the entrance and exit. Deviation routes will be set up.

- Near Passy - Chamonix/ Geneva direction - from April 23 to June 27
Type of work : road works on behalf of EDF (electricity company)
Trafic conditions :
Traffic will be reduced to one lane near Passy for 1.5 km.
Exit at the half-interchange EDF will be closed :
Detour by interchange n. 22 (Le Fayet) or n. 21 (Passy).
Wide loads (width > 3.5 m) are strictly forbidden throughout the road works zone, unless escorted by ATMB. ATMB escort can be set on Tuesdays and Thursdays from 4 am to 6 am with a contraflow on the Egratz viaduct.

- Châtelard and Chavants bridges – from April 7 to June 27
Type of work: maintenance work including security equipments.
Traffic conditions :
Traffic on one lane in both tunnels (left side of the road).