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 set with a contraflow, from 10.30 pm to 6 am, during the following nights :
. from December 15 to 18.
. from January 12 to 13.
as follows :
Possible inconvenience from 9 pm to 10 pm and from 6 am to 7 am due to the transit of any vehicles under escort.