The Ministère des Transports et de la Mobilité durable informs the public that Highway 25, including the Louis-Hippolyte-La Fontaine tunnel, will be closed toward the South Shore during the long weekend, from Oct. 9 to 13.
From Oct. 9 to 11, users will be directed to the Champlain Bridge to avoid the area where the Beneva Montreal Marathon will be held. The detour will then take place over the Jacques Cartier Bridge starting Oct.11 at 11 p.m. Highway 25 toward Montreal, including the tunnel, will also be closed at night throughout the weekend.
Significant congestion is expected. The Ministry recommends that road users allow extra time to get to their destination. A police presence is planned on the network to facilitate traffic. Public transit will be the best way to get downtown this weekend.
These obstructions are necessary to allow the replacement of several fire protection panels located at the entrance to the tunnel, at the level of the vault. These interventions are required because of the damage caused by incidents and fender-benders that have occurred over the past year. These repairs are essential to allow the opening of a second lane to the South Shore by the end of the fall.
A closure will also be in place on Route 132 eastbound, between Roland-Therrien Boulevard and Highway 20 (Jean-Lesage), during the night of October 8 to 9, in order to carry out maintenance and winterization work.
Obstructions and traffic management
Highway 25 toward the South Shore
Friday, 11 p.m., to Sunday, 11 p.m.
- Complete closure of Highway 25 toward the South Shore (including the Louis-Hippolyte-La Fontaine tunnel) between the Anjou interchange and the entrance from Île Charron.
- Complete closure of the ramps at the Anjou interchange leading from Highway 40 westbound and eastbound to Highway 25 southbound.
- Closure of the Anjou interchange ramp leading from Highway 25 southbound to Highway 25 southbound.
- Access to Highway 40 eastbound from Highway 25 southbound will remain accessible.
- Souligny Avenue eastbound, between Dickson and Honoré-Beaugrand streets, will be closed 30 minutes before the complete closure of Highway 25.
- Entrances will be closed 30 minutes before the highway closes completely.
The preferred detour route will be via the Champlain Bridge to avoid the area where the Beneva Montreal Marathon will be held from October 9 to 11. For traffic management reasons, the entrance from Stinson Street to Highway 40 westbound will be closed from Saturday at 2 a.m. to Sunday at 11 p.m.
Sunday, 11 p.m., to Tuesday, 5 a.m.
- Complete closure of Highway 25 toward the South Shore (including the Louis-Hippolyte-La Fontaine tunnel) between exit 4 (Montreal [downtown], Jacques-Cartier Bridge) and the entrance from Charron Island.
- Closure of Souligny Avenue eastbound, between Dickson and Honoré-Beaugrand streets.
The preferred detour route will be via the Jacques Cartier Bridge.
Highway 25 toward Montreal
Friday, 11 p.m., to Saturday, 8 a.m.
- Complete closure of Highway 25 toward Montreal (including the Louis-Hippolyte-La Fontaine tunnel) between exit 90 (Highway 20 West, Route 132, La Prairie, USA, Varennes, P.-E.-Trudeau airport) and the entrance from Sherbrooke Street.
- The entrances to this section will be closed 30 minutes before the highway is completely closed.
Saturday, 10 p.m., to Sunday, 7 a.m.
Sunday, 10 p.m., to Monday, 8 a.m.
Monday, 10 p.m., to Tuesday, 5 a.m.
- Complete closure of Highway 25 toward Montreal (including the Louis-Hippolyte-La Fontaine tunnel) between exit 90 (Highway 20 West, Route 132, La Prairie, USA, Varennes, P.-E.-Trudeau Airport) and the entrance from Notre-Dame Street West.
- The entrances to this section will be closed 30 minutes before the highway is completely closed.
Highway 132 eastbound
Thursday, 9 p.m., to Friday, 5 a.m.
- Complete closure between Roland-Therrien Boulevard and Highway 20 (Jean-Lesage).
- Entrances to this section will be closed 30 minutes before the full closure.
- The detour will be via Marie-Victorin Boulevard.
Work may be postponed due to adverse weather conditions or operational constraints. Before hitting the road, it is recommended that you consult Québec 511, a practical tool for properly planning your trips, and download the Québec 511 mobile application to activate notifications.
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