Major rehabilitation of the Louis-Hippolyte-La Fontaine tunnel - Complete night closures on Highway 25 between September 5 and 9

MONTRÉAL, Sept. 2, 2025 /CNW/ - The Ministère des Transports et de la Mobilité durable informs road users that complete night closures will be in place on Highway 25, in both directions, between September 5 and 9. These obstructions are required to carry out lighting work under the deck of the Sherbrooke Street overpass.

Please note that there are no planned closures of the Louis-Hyppolyte-La Fontaine tunnel from September 1^to 8, 2025.

Night closures

Highway 25 toward Montreal

• Complete closure of Highway 25 toward Montreal between exit 5 (Route 138, Sherbrooke Street, Yves-Prévost Blvd.) and the Sherbrooke Street East entrance, during the night of September 5 to 6, from Friday 11 p.m. to Saturday 8 a.m.
• The Hochelaga Street entrance will be closed 30 minutes before the highway closes.
• A detour will be set up on the service road.
• Highway 25 toward the South Shore
• Complete closure of Highway 25 toward the South Shore between exit 5 (Route 138, Hochelaga Street, Sherbrooke Street, Jacques-Cartier Bridge) and the Sherbrooke Street East entrance.
• Night of September 7 to 8, from Sunday 10 p.m. to Monday 5 a.m.
• Night of September 8 to 9, from Monday 10 p.m. to Tuesday 5 a.m.
• A detour will be set up on the service road.

In the event of adverse weather conditions or operational constraints, these interventions may be postponed.

The Ministry invites you to consult quebec511.info before you hit the road or call 511 to find out about closures on the network and plan your trips.

Associated link

Learn more about the Louis-Hippolyte-La Fontaine Tunnel Rehabilitation Project.