Multiple roadwork projects across Greater Montreal are set to cause traffic delays and lane closures from September 4 through September 7, 2026, covering the Labour Day long weekend. The work will affect a range of arterial routes, highway sections and bridge approaches throughout the metropolitan area, prompting motorists to anticipate slower travel times and possible detours.
The city’s transportation department has released a schedule that identifies a series of major construction zones active during the four‑day period. These zones include several high‑traffic corridors where lane reductions will be in place, as well as bridge access points where temporary traffic patterns will be enforced. Signage and electronic message boards are being installed ahead of the disruptions to inform drivers of upcoming lane closures and alternative routes.
Commuters traveling to and from downtown Montreal, the South Shore, the North Shore and surrounding suburbs should allow extra time for their journeys. The department advises drivers to check real‑time traffic updates before departure and to consider using public transit where possible. Freight and delivery vehicles are also urged to plan for potential hold‑ups, especially on routes that serve industrial parks and distribution centres.
The roadwork is part of ongoing infrastructure maintenance and improvement programs that the municipality has been implementing over the past year. While the projects are scheduled to be completed by the end of the Labour Day weekend, some lane restrictions may remain in place until final inspections are completed. Residents in affected neighbourhoods have been notified of the planned activities through local news releases and municipal newsletters.
Motorists are reminded that safety crews will be present at all work sites and that reduced speed limits will be enforced in the construction areas. By adhering to posted signs and adjusting travel plans, drivers can help minimise congestion and maintain a steady flow of traffic throughout the holiday period.