Road works and traffic restrictions
The Mont Blanc tunnel is open 24 hours a day all year long.
To allow maintenance work, traffic will be closed to all vehicules from 10 pm to 6 am, during the following night : . June 16th to 17th.
To allow maintenance work, traffic will be set with a contraflow from 10.30 pm to 6.00 am, during the following nights :
. July 7th to 8th
. August 4th to 5th.
as follows :
Possible inconvenience from 9 p.m. to 10 p.m. and from 6 a.m. to 7 a.m. due to the transit of any vehicles under escort.