Weekend road work could impact West Island drivers
Posted April 20, 2026 4:59 pm.
Last Updated April 23, 2026 11:51 am.
Montrealers should be aware of a weekend full closure and extended lane restrictions on Highway 520 West near Highway 13, as well as additional ramp closures in the West Island, as the Ministry of Transport and Sustainable Mobility carries out ongoing roadwork in the region.
Weekend full closure on A-520 West
The Ministry says Highway 520 West will be fully closed from Friday at 9:30 p.m. to Monday at 5 a.m. between Exit 4 (Mirabel / A-13 / Montée de Liesse / Lachine / Laval) and the entrance from Highway 13 South.
The closure is required as part of reconstruction work on the Highway 520 overpass above Highway 13.
A detour will be in place via the service road (Côte-de-Liesse Road).
Partial closure continues until May 4
After the weekend closure, Highway 520 West will remain reduced to one lane in the Highway 13 sector until May 4 at 5 a.m.
During this period, the entrance from Montée de Liesse will also remain closed until May 4.
The ministry says these continued restrictions are required to support ongoing reconstruction work on the overpass.
Additional ramp closures on Highway 30
Separate work in the West Island will also impact drivers on Highway 30.
From Friday at 8 p.m. to Monday at 5 a.m., the following closures will be in effect:
- Exit 2 off Highway 30 East (Route 340 / Boulevard de la Cité-des-Jeunes / Saint-Lazare) will be closed
- The ramp from Route 340 to Highway 30 East will also be closed
Detours will be clearly marked using temporary signage.
Expect congestion and travel delays
The ministry is warning drivers to expect congestion in both work zones and is advising motorists to allow extra travel time, particularly those heading toward Montréal-Trudeau International Airport.
Drivers are encouraged to check Québec 511 before travelling.
Possible changes and travel advice
Officials say the work may be postponed, extended or cancelled depending on weather conditions or operational constraints.
The ministry is thanking motorists for their patience and reminding them that respecting construction signage is essential for the safety of both drivers and workers.
