Highway 25
The Louis-Hippolyte-La Fontaine Tunnel will be completely closed toward Montreal from 10 p.m. Friday to 5 a.m. Monday, and closed toward the South Shore overnights, from 10 p.m. Friday to 8 a.m. Saturday, 10 p.m. Saturday to 9 a.m. Sunday, and 10 p.m. Sunday to 5 a.m. Monday. Souligny Ave. will also be closed eastbound overnights, and westbound over the highway from 10 p.m. Friday to 8 a.m. Saturday.
Highway 40
In Ste-Anne-de-Bellevue and Senneville, the highway will be closed in both directions at Anciens-Combattants Blvd. from Friday at 11:59 p.m. to Monday at 5:00 a.m., with traffic diverted to the service roads, to reconfigure lanes as part of the Île-aux-Tourtes Bridge reconstruction. The bridge itself will remain open. Starting Monday, eastbound traffic will use the new highway lanes on the Montreal side.
At the Laurentian Interchange with Highway 15, ramps toward the westbound Highway 40 service road from Exit 70 (Marcel-Laurin Blvd. and Rockland Blvd.), and Highway 15 south, along with the westbound service road bridge over the REM crossing, will be closed from 10 p.m. Friday to 5 a.m. Monday. Suggested detour is Highway 40 west, turn around at the 40/520 interchange and double back via the eastbound service road.