Drivers heading west on the Ville-Marie Expressway wont be able to access Highway 20 until Tuesday morning.
For commuters on the Candiac line, a free shuttle service is also being offered on Friday and Monday during rush hour between the Châteauguay terminus and the Sainte-Catherine train station.
Drivers heading from the South Shore or Verdun north along Highway 15 wont be able to access the Decarie Expressway between Friday at midnight and Monday morning.
We invite people to use public transit and also if its possible, dont come in the area of the Turcot Interchange. Work from home if its possible, said Martin Girard of Transport Quebec.
Girard is warning that if drivers dont change their habits, they could be sitting in up to 10 kilometres of traffic.
It will be free on both train lines, on Vaudreuil-Hudson and also the one on Candiac, said Girard.
We need to close the Highway 20 for safety reasons. We cannot allow cars to drive in this area while they are dismantling the structure, he said.
For those heading to Trudeau Airport, plan ahead. The airport is providing free shuttles from Dorval train station to accommodate drivers.
While this is the only scheduled weekday closure for the duration of the project, weekend closures will continue until work is complete – planned for the end of 2020.
The major closures began Thursday at midnight and will last until Tuesday morning. Highways 20 and 15 will be affected.
Transport Quebec is warning this weekend will see “unprecedented” closures in the Turcot Interchange.