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 totally closed from 10.00 pm to 6.00 am, during the night of November 25th till 26th.
To allow maintenance work, traffic will be set with a contraflow from 10.30 pm to 6.00 am, during the following nights :
. December10th to 12th, . December16th to 19th,
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.
Traffic will be closed to all vehicules : - from December 9th at 7.00 pm to December 10th at 6.00 am to allow a safety exercise.