Greater Montreal commuters should prepare for extensive traffic disruptions from September 5 through September 7, 2026, as authorities implement significant road closures and delays on several key routes. The La Fontaine tunnel, the Victoria Bridge, as well as highways 20 and 25 will be affected, creating potential bottlenecks for drivers traveling across the region.
The planned closures target some of the busiest commuter corridors in the area. The La Fontaine tunnel, a critical link for traffic moving between the north and south sides of the city, will see restricted access, while the Victoria Bridge, which spans the St. Lawrence River, will also experience limited availability for vehicles. Both structures are essential for daily commutes and freight movement, and the restrictions are expected to lengthen travel times.
Highways 20 and 25, two major arteries that serve suburban and urban traffic, are slated for partial closures during the three-day period. Motorists using these highways should anticipate detours and possible congestion on alternative routes. The disruptions coincide with the Labour Day weekend, a time when many residents travel for leisure and family gatherings, potentially amplifying the impact on road networks.
Travelers are advised to plan ahead, consider alternative transportation options, and allow extra time for their journeys. While specific timing for each closure has not been detailed, the overall period of September 5 to September 7 covers the entire weekend, meaning that traffic flow could be affected at any hour. The coordinated effort aims to accommodate maintenance or other operational needs on the affected infrastructure, though the exact purpose of the closures has not been disclosed.
Authorities encourage commuters to stay informed through official traffic updates and to follow posted signage when navigating the affected routes. By adjusting travel plans and remaining aware of the ongoing disruptions, drivers can help reduce congestion and maintain safety on the region’s roadways during the Labour Day weekend.