Overnight Closures on Highways 20 and 520 – May 4 to 7, 2025
As part of the Dorval Interchange redevelopment project, the Ministère des Transports et de la Mobilité durable will be carrying out finalization work, resulting in partial overnight closures on Highways 20 and 520, near the Dorval Circle:
- Night of May 4 to 5, from 9 p.m. to 5 a.m.: Closure of Highway 520 eastbound, between the Dorval Circle and the entrance ramp for Montréal–Pierre Elliott Trudeau International Airport.
- Night of May 4 to 5, from 10 p.m. to 5:30 a.m.: Closure of Highway 520 westbound, between Exit "Cardinal Avenue" and the Dorval Circle.
- Night of May 5 to 6, from 11 p.m. to 5 a.m.: Closure of Highway 20 eastbound, between Exit "P.-E.-Trudeau / Highway 520 East / Dorval Avenue" and the entrance from Bouchard Boulevard.
- Night of May 6 to 7, from 11 p.m. to 5 a.m.: Closure of Highway 20 westbound, between Exit "P.-E.-Trudeau" and the entrance from Montréal-Toronto Boulevard.
Detour routes will be marked with temporary signage. Please note that work schedules may change due to weather or operational constraints.
To stay informed and plan your route accordingly, visit Quebec 511.
For questions or comments, contact the Ministère by dialing 511 or visiting Quebec.ca/contact-ministere-transports.
