Obstacles will force the complete closure of the Louis-Hyppolite-La Fontaine tunnel in the south direction and of the Pie-IX bridge in both directions during the weekend.
Highway 25 southbound will be closed between Sherbrooke Street and the Île-Charron Street entrance from 12:30 a.m. Saturday to 5 a.m. Monday.
To reach Longueuil from Montreal, Mobility Montreal plans a detour via Hochelaga, Dickson and Notre-Dame East streets.
The Pie-IX bridge will also be completely closed between the two directions from Saturday 10 p.m. to Monday 5 a.m., while an alternative is suggested to users with the use of Highway 19.
In Boucherville, on the South Shore of Montreal, the complete closure of Highway 20 westbound between De Montarville Boulevard and the next entrance is planned.
In Pointe-Claire, access to Boulevard des Sources will be closed from the Highway 40 eastbound service road from 10 p.m. Friday to 5 a.m. Monday.
In addition, in the Sud-Ouest borough, rue Saint-Antoine Ouest will be closed between rue George-Vanier and avenue Atwater, Saturday from 8 a.m. to 7 p.m. and Sunday from 9 a.m. to 7 p.m.