Autoroute 40 will be closed for the entire weekend of July 11‑12, 2026, on the segment that runs between the Côte‑de‑Liesse interchange and Autoroute 15. The shutdown applies to both directions of traffic for the two‑day period.
The closure affects a major east‑west freeway that carries a high volume of commuter and commercial traffic across Montreal. Drivers who normally use the stretch between Côte‑de‑Liesse and Highway 15 will need to seek alternative routes for the duration of the work.
The affected portion of the highway lies in the western part of the city, linking the Côte‑de‑Liesse area with the north‑south corridor of Autoroute 15. The weekend timeframe means that the interruption will coincide with both Saturday and Sunday travel, including weekend commuters and weekend‑time freight movements.
Motorists are advised to plan their trips accordingly and allow extra time for travel while the freeway remains closed. The closure is expected to resume normal traffic flow after the weekend, with the road reopening on Monday, July 13, 2026.
The temporary suspension of service is part of routine maintenance and improvement activities that are periodically scheduled on Montreal’s highway network. While the specific work being performed has not been detailed, such closures are common on busy arteries to ensure safety and allow crews to complete tasks without interference from moving traffic.