Major highway closures hit Montreal-area crossings Friday through Monday
Honouré-Mercier Bridge and Victoria Bridge work will disrupt cross-river routes through July 27; plan extra commute time to airports and the South Shore.
Sources · Quebec Nouvelles
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Update — July 24, 2026: The Mercier Bridge will have multiple ramp closures from Friday at 11pm through Monday at 5am for repair and maintenance work, with only R-138 East providing access to the Montreal-bound bridge during this period. The R-132 West access ramp from La Prairie and St. Constant will be closed, with detours available via A-730 and A-30 to R-138 in Chateauguay or the Champlain Bridge. Additional closures will affect R-207 North, A-730 North toward R-132 West, and Old Chateauguay Road, while a priority bus lane will operate for transit from Montreal toward Chateauguay.
Two of Montreal's main cross-river routes are shutting down this weekend, disrupting traffic to airports and the South Shore.
Starting Saturday at 3 a.m. through Monday at 5 a.m., major ramp closures will block traffic on the Honouré-Mercier Bridge. The ramp from Route 132 west (coming from La Prairie) to Route 138 east will close, with detours via A-30 west, exit 38, and the bridge's reversible lanes. The ramp from Route 138 west (from the bridge) to Route 138 west (toward Châteauguay) will also close, with detours via Route 132 east and A-30 west.
Overall bridge traffic will run in one lane per direction over the weekend through Monday. In addition, the bridge will operate in contraflow toward Montreal (aval side) with 1 lane each direction until Monday, August 3 at 5 a.m. The City warns this "could occasion congestion," particularly for travelers heading to Pierre-Trudeau Airport.
Starting Monday, July 27, the east span of Victoria Bridge (the side closer to Samuel-De Champlain) will close through Thursday, September 10. Traffic will shift to the single westbound span (the Jacques-Cartier side) on a set schedule: 2 lanes toward Montreal from 5 a.m. to 10 a.m., and 2 lanes toward the South Shore from 2:30 p.m. to 8 p.m. Heavy vehicles remain banned on Victoria Bridge at all times.
The City recommends consulting Québec 511 before traveling and downloading the app for real-time notifications. Transit adjustments include extended hours on the Route 138 reserved bus lane (5 a.m. to 8 p.m. daily) and modified bus schedules for the upper South Shore and Southwest sectors.
The facts
When will the Honouré-Mercier Bridge ramp closures happen?
Major ramp closures on the Honouré-Mercier Bridge will run from Saturday, July 25, 2026 at 3 a.m. through Monday, July 27, 2026 at 5 a.m.
When does the Victoria Bridge east span closure start?
The east span of Victoria Bridge closes on Monday, July 27, 2026 and remains closed through Thursday, September 10, 2026.
How many lanes will Victoria Bridge have during the closure?
Victoria Bridge will operate on a single westbound span with 2 lanes toward Montreal from 5 a.m. to 10 a.m. and 2 lanes toward the South Shore from 2:30 p.m. to 8 p.m.
