Reconstruction of the Chemin des Chenaux overpass


Though it was originally projected that the overpass wouldn’t be rebuilt until 2023, plans for its reconstruction have been announce to begin August 17.

Despite initial estimates given in 2018 that the closure could last for five years, the Ministère des Transports is informing road users that the reconstruction work on the Chemin des Chenaux overpass above Highway 40 in Vaudreuil-Dorion will begin on August 17. The work, which will continue until the summer of 2021, will be divided into several phases and will mainly involve obstacles at night in order to limit the impact on the road network. Traffic will be maintained in both directions on Highway 40 throughout the work.

As reported in The Journal, the overpass was demolished overnight during the weekend of November 23 to 24, 2019. It was closed in September, 2018 after being deemed unsafe by the MTQ. The closure was an inconvenience for motorists trying to access the residential area north of Highway 40 and for those wishing to get to the Château-Vaudreuil hotel just south of the overpass.

Area road closures

Closure of the shoulders of Highway 40 and the service roads in the area of ​​the Chemin des Chenaux overpass will occur, though exact dates have not yet been announced. A deviation from the highway lanes is to be expected in autumn 2020 (all lanes will remain accessible).

The closure of Exit 36 ​​(Ch. Dumberry / Ch. Des Chenaux) from Highway 40 westbound is expected for a total of four nights.


The closure of the service road of Highway 40 eastbound, in the area of ​​the Chemin des Chenaux overpass, is expected for a total of four nights. (Local traffic will remain possible between the roundabout on Boulevard de la Cité-des-Jeunes and the next access point).

For eight nights (four per direction), only one lane will be available to traffic on Highway 40 in the Chemin des Chenaux overpass area.

When required, detours will be marked with temporary signage.

The site will have to take a break during the winter of 2021. A press release will follow in the spring of 2021 to inform residents about the remaining work as well as the obstacles required to complete the project. In the event of unfavourable weather conditions or operational constraints, the start of the work could be postponed and the work could be prolonged.

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