Transport Quebec announced that two major roadways in Montreal will be closed each night from September 28 through November 2, 2026. The overnight shutdowns affect Highway 13 in the Chomedey area and the interchange between Highway 520 and Côte‑de‑Liesse. The closures are intended to allow reconstruction work on the Highway 520 overpass to continue uninterrupted.
The decision extends ongoing work on the Highway 520 overpass, a project that has already required temporary traffic adjustments. By restricting traffic during nighttime hours, crews can complete the necessary repairs and upgrades more efficiently and with reduced impact on daytime commuters. Both Highway 13 and the Highway 520 interchange are key routes for residents and commuters in the western part of the city, linking several neighbourhoods and providing access to major arterial roads.
Motorists are advised to plan alternative routes for the nightly periods when the closures are in effect. While the specific start and end times for the nightly shutdowns have not been detailed, the expectation is that the roads will be inaccessible for the duration of each night until the work is finished. Drivers should stay informed of any updates from Transport Quebec, which will provide further guidance on detours and traffic management as the project progresses.
The reconstruction of the Highway 520 overpass is part of a broader effort to maintain and improve the province's transportation infrastructure. Extending the work into the fall months reflects the agency's commitment to completing the project within the planned timeline, despite the challenges of working on busy urban corridors. Residents and commuters can expect the overnight closures to remain in place until the scheduled completion date of November 2, after which normal traffic flow on both Highway 13 and the Highway 520 interchange should resume.