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
- Tuesday, 4 February to Wednesday, 5 February from 22:00 to 06:00
- Wednesday, 5 February to Thursday, 6 February from 22:00 to 06:00
- Thursday, 6 February to Friday, 7 February from 22:00 to 06:00
- Monday, 10 February to Tuesday, 11 February from 22:00 to 06:00
- Tuesday, 11 February to Wednesday, 12 February from 22:00 to 06:00
- Wednesday, 12 February to Thursday, 13 February from 22:00 to 06:00
- Thursday, 13 February to Friday, 14 February from 22:00 to 06:00
- Monday, 17 February to Tuesday, 18 February from 22:00 to 06:00
- Tuesday, 18 February to Wednesday, 19 February from 22:00 to 06:00
- Wednesday, 19 February to Thursday, 20 February from 22:00 to 06:00
- Thursday, 20 February to Friday, 21 February from 22:00 to 06:00
- Monday, 24 February to Tuesday, 25 February from 23:30 to 02:00
- Monday, 17 March to Tuesday, 18 March from 22:00 to 06:00
- Tuesday, 18 March to Wednesday, 19 March from 22:00 to 06:00
- Wednesday, 19 March to Thursday, 20 March from 22:00 to 06:00
- Thursday, 20 March to Friday, 21 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, 16, 21, 22, 23, 27, 28, and 29 January
- 4, 5, and 6 February
- 26, 27 February
- 24, 25, 26, and 27 March
