Traffic on Highway 40 near Saint‑Cuthbert in Quebec's Lanaudière region resumed on Thursday after a night‑time closure caused by a collapsed culvert. The shutdown began during the night of September 2 and continued into the early hours of September 3, prompting motorists to seek alternate routes until repairs were completed.
The failure involved a ponceau, a type of culvert that channels water beneath the roadway. Its collapse forced officials to close the western section of Highway 40 while crews assessed the damage and secured the site. The interruption occurred amid ongoing maintenance work on that stretch of the highway, which has been scheduled to improve the route's condition.
Provincial authorities reported that the culvert has been repaired and the road is now open to traffic. They indicated that the reopening follows safety checks confirming that the structure is stable and that the roadway meets operational standards. Drivers are advised to remain cautious as the area was recently a construction zone.
Officials warned that the weekend ahead could see increased traffic volumes on Highway 40, as commuters and travelers return to regular patterns after the brief disruption. The expectation of heavier flow reflects typical weekend travel trends in the region, especially given the highway's role as a major east‑west corridor.
Motorists who were delayed by the closure are encouraged to follow posted signs and any further guidance from traffic management teams. The incident underscores the importance of routine infrastructure inspections, particularly during periods of active road work.