Northbound lanes through the Turcot Interchange will be closed this weekend as crews work on the crucial structure.

Highway 15 north will be closed from Exit 58 until the Edouard Montpetit entrance.

That means the connections from Highway 15 North to Highway 20 West, and from downtown and Highway 20 East to the northbound Decarie Expressway, will also be closed.

Those closures are in effect from midnight Friday Nov. 23 until 5 a.m. Monday Nov. 26.

Work will also be taking place in the western section of the Turcot Yards over the weekend.

Exit 64 from Highway 20 East which connects to St. Jacques and Angrignon will close at 11 p.m. Friday and reopen at 5 a.m. Monday, while Notre Dame St. will be closed between Dollard and Angrignon at the same time.

Meanwhile the Pullman St. entrance to Highway 20 West will close at midnight Friday and reopen at 5 a.m. Monday.

Nuns' Island

As has become routine, getting on and off of Nuns' Island will be complicated this weekend.

Highway 10 towards the Champlain Bridge will be closed at Exit 4 from 10 p.m. Friday until 5 a.m. Monday.

That means the only way to access the island from Montreal will be via Highway 15 South, however only the exit 57S will be open.

Exit 57 North will close at 10 p.m. Friday and reopen at 5 a.m. Monday.

Drivers coming over the Champlain Bridge will be forced to take exit 58, and either go onto Nuns' Island or take the Bonaventure Expressway.

Access to Highway 15 North from Nuns' Island will be closed from midnight Friday until 5 a.m. Monday.

Lafontaine Tunnel

The Montreal-bound lanes of Highway 25 will be closed from 11 p.m. Friday until 8 a.m. Saturday.

The southbound lanes of the tunnel will shut at midnight Saturday and reopen at 9 a.m. Sunday.

Entrances and exits near the tunnel will close an hour earlier and only reopen an hour after the tunnel is closed.