To carry out these maintenance operations, GEIE-TMB, the manager of the Mont Blanc Tunnel, has announced the complete closure of the tunnel on the following dates:
- Monday, 13 January to Tuesday, 14 January from 22:00 to 06:00
- Monday, 20 January to Tuesday, 21 January from 22:00 to 06:00
- Monday, 3 February to Tuesday, 4 February from 19:00 to 06:00
- Monday, 10 March to Tuesday, 11 March from 22:00 to 06:00
- Tuesday, 11 March to Wednesday, 12 March from 22:00 to 06:00
- Wednesday, 12 March to Thursday, 13 March from 22:00 to 06:00
- Thursday, 13 March to Friday, 14 March from 22:00 to 06:00
Additionally, alternating traffic will be in effect from 22:30 to 06:00 on the following nights:
- 14, 15, and 16 January
- 4, 5, and 6 February