Transport Quebec announced that Highway 25, including the Louis-Hippolyte-La Fontaine Tunnel, will be fully closed Monday and Friday nights for major repair work.
Highway 20 will closures Saturday night.
Monday night closure
The closure will begin at 10 p.m. on Monday, Feb. 16, and last until 5 a.m. on Tuesday, Feb. 17, to allow for maintenance and inspection work on the tunnel.
During that time frame, Highway 25 toward the South Shore will be completely closed between Exit 4 (Montreal downtown, Jacques-Cartier Bridge) and the entrance from Île Charron.
Tunnel closure during the night of Feb. 16 to 17, 2026 (Courtesy: CNW Group/Department of Transportation and Sustainable Mobility)
Additionally, Highway 25 toward Montreal between Exit 90 (Highway 20 West, Route 132, La Prairie, USA, Varennes, P.-E.-Trudeau airport) and the entrance from Notre-Dame Street will also be completely closed.
The Louis-Hippolyte-La Fontaine tunnel will also be closed in both directions during this time.
Highway 25 closed overnight from Feb. 16 to 17, 2026 (CNW Group/Department of Transportation and Sustainable Mobility)
Transport Quebec also notes that eastbound Souligny Avenue will be closed 30 minutes before the complete closure of Highway 25 in both directions between Dickson and Honoré-Beaugrand Streets.
Friday night closure
On Friday night, the tunnel closure will begin at 11 p.m., Feb. 20, and last until 8 a.m., Saturday Feb. 21. The entrances to this section will be closed 30 minutes before the highway closes completely.
During that time frame, Highway 25 toward the South Shore will be completely closed between Exit 4 (Montreal downtown, Jacques-Cartier Bridge) and the entrance from Île Charron.
Tunnel closure during the night of Feb. 20 to 21, 2026 (CNW Group/Department of Transportation and Sustainable Mobility)
Additionally, Highway 25 toward Montreal between Exit 90 (Highway 20 West, Route 132, La Prairie, USA, Varennes, P.-E.-Trudeau airport) and the entrance from Notre-Dame Street will also be completely closed.
The Louis-Hippolyte-La Fontaine tunnel will also be closed in both directions during this time.
Highway 25 closed overnight from Feb. 20 to 21, 2026 (Courtesy: CNW Group/Department of Transportation and Sustainable Mobility)
Souligny Avenue will be closed 30 minutes in the eastbound direction between Dickson and Honoré-Beaugrand Streets.
Saturday night closure
Highway 20 will be fully closed in the westbound direction between exit 102 (Sainte-Julie, Saint-Amable, Saint-Bruno-de-Montarville) and the entrance from Armand-Frappier Boulevard near the Highway 20 and 30 interchange, from 10 p.m., Saturday, Feb. 21 to 8 a.m., Sunday, Feb. 22.
The entrance from Armand-Frappier Boulevard and Chemin du Fer-à-Cheval will be closed 30 minutes before the highway is completely closed.
On the eastbound direction, on Highway 20 the entrance from Nobel Street will be closed from 9:30 p.m., Saturday, Feb. 21 to 8 a.m., Sunday, Feb. 22.
This closure will be dependant on the weather and could be delayed. Drivers are urged to check Quebec 511 before hitting the road.