Mont Blanc Motorways and Tunnel Mont Blanc Motorways and Tunnel

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Works : traffic informations

Roadworks and traffic information

- Near the town "Les Houches" - in Chamonix > Le Fayet direction - Friday, 29th of August:
. Due to the sport event called "The North Face Ultra Trail Mont Blanc", traffic will be regulated as follows :
From 4 pm to 8 pm : circulation on one lane and speed limit 50 km/h. From 5:30 pm to 7 pm : interchange nr. 27 closed to traffic in Chamonix > Le Fayet direction : take the exit nr.29 (La Georgeanne) or nr. 26 (Les Trabets.

- Passy - service area of Châtelard - from August 25 to 29 :
. Type of work : road coating restoration.
. Traffic conditions : the area entrances will be maintained.
Interchange entrances nr.23 (Le Châtelard) might be occasionally closed, at the exit or the entrance, in that case, a deviation route via interchange nr. 24 (Servoz) or nr. 22 (Le Fayet) will be set.

- Châtelard and Chavants tunnels – in the Geneva > Chamonix direction - from September 22 to November :
Type of work: maintenance work including security equipments.
Traffic conditions :
Traffic on one lane near / in both tunnels onto 5 km.
Speed limit : 70 km/h at road works and 50 km/h in both tunnels.
Overtaking strictly forbidden. 3.5 m) are strictly forbidden throughout the road works zone, unless escorted by ATMB. ATMB escort can be set on Mondays, Tuesdays, Wednesdays, Thursdays and Fridays from 5 am to 7 am and from 7 pm to 9 pm. ATMB services to contact 3 days before the convoy to plan escort conditions.