Montreal Traffic Advisory: Major Disruptions Expected This Weekend and Beyond
Montreal commuters should brace for significant traffic disruptions this weekend and into the coming months, as several key infrastructure projects and maintenance activities are underway. The Ministry of Transport and Lasting Mobility has issued advisories for several major routes, including the Bonaventure Expressway and the Laviolette Bridge.
Laviolette Bridge (A55) Closure: July 20-24, 2025
The Laviolette Bridge, connecting Trois-Rivières and Bécancour, will experiance closures from July 20 to July 24, 2025. This closure is part of ongoing work impacting traffic flow between these two locations.

Bonaventure Expressway Sector Reminders
Commuters utilizing the Bonaventure Expressway should be aware of ongoing closures and lane reductions:
- Access from Chemin de la Pointe-Nord,Boulevard de l’Île-des-Sœurs,and Rue Jacques-Leber to A-10 West / Downtown is closed until September. Detour routes are available via A-15 North, Exit 60 to Gaétan-Laberge Boulevard.
- In the Peel Basin / Victoria Bridge area, one out of three lanes in each direction will remain closed until December.
- The Clément Bridge will have one lane of traffic in each direction operating in the opposite direction until December.
Réseau express métropolitain (REM) Updates
While specific weekend disruptions for the REM were not detailed in the provided details for July 18, 2025, it is indeed critically important for riders to stay informed about potential service changes. The REM is a significant new transit network in the Montreal metropolitan area.