Major Montreal road closures are coming this weekend — including one on the Mercier Bridge

If you're driving around Montreal this weekend, you can expect a few inconveniences.

Quebec's Transport Ministry is warning of several major closures from Friday, November 21, through early Monday, November 24, affecting the Honoré-Mercier Bridge, Highway 30 in Brossard, and parts of Route 138.

Here's what's closed and when.

Honoré-Mercier Bridge (R-138)

When: Friday 11 p.m. to Monday 5 a.m.

• Traffic will run contraflow on the Montreal-bound span with one lane open in each direction.
• Default access: Airlie Street / reserved lane toward R-138 west.
• Detour: via Lafleur Avenue and Clément Street.
• Reserved-lane detour: via Avenue du Trésor-Caché, Lasalle Boulevard, des Oblats Street, Airlie Street, then follow the Lafleur/Clément detour.

A-30 in Brossard

When: Friday 10 p.m. to Monday 5 a.m.

• Full closure of A-30 westbound between Exit 67 (A-10, A-15, I-89, downtown Montreal, Sherbrooke) and both A-10 access points.
• Detour: service road.
• Expect daytime congestion on Saturday and Sunday.

Route 138 in Châteauguay (Saint-Jean-Baptiste Blvd.)

When: Friday 10 p.m. to Monday 5 a.m.

• Partial closure on R-138 east: two of three lanes closed between Rodrigue Street and Industriel Boulevard.
• Work is being carried out by the City of Châteauguay.

Other reminders

Bonaventure sector / PJCCI:

• Near the Peel Basin and Victoria Bridge: one of three lanes closed in each direction until December.
• On the Clément Bridge: contraflow with one lane open per direction until December.
• The end of the Samuel-De Champlain Bridge, Exit 58 toward A-10 west / downtown has a reduction to one lane and a narrowed lane width of 4 metres.

The ministry notes that closures may be adjusted or cancelled due to weather or operational constraints. For updates, check Quebec511.

For updates and more info, you can visit Quebec511.info.