Also: Mercier Bridge will be partially closed Friday night into Saturday.
Major planned road closures expected this weekend in and around Montreal:
Highway 40
The highway will be closed eastbound at St-Charles Ave. and westbound at Anciens-Combattants Blvd., though access to Senneville Rd. will be maintained for westbound traffic. The ramp toward Highway 40 east at the interchange with Highway 30 will be closed to redirect traffic to Highway 20.
The tolls on Highway 30 will be suspended in both directions during this closure. When it reopens Monday, lanes on the bridge and its approaches will be deviated, and the westbound highway entrance near the Pine St. overpass will be closed for the next year. The number of lanes open on the bridge will be unchanged — one in each direction, and a third changing direction for weekday rush hours.
Route 138
Continuing disruptions
- Highway 10: The ramp from the Bonaventure Expressway toward the Champlain Bridge is closed until the end of September. Traffic is detoured via Gaétan-Laberge Blvd. Access to Nuns’ Island is maintained during this work. The access to Highway 10 west from Nuns’ Island is closed until the end of November.
- Highway 15: In Candiac, the ramps from Highway 15 north to Highway 930 west and from 15 south to 930 east are closed until November, and lanes are narrowed on both highways through the interchange.
- Highway 25: Half of the Louis-Hippolyte-La Fontaine Tunnel is closed as part of a long-term renovation project, with traffic sharing the remaining tunnel — one lane toward the South Shore and two lanes toward Montreal.
- Highway 30: In Beauharnois, eastbound traffic runs counterflow overnights during weekends on and around the Madeleine-Parent Bridge until the end of the year.
- Highway 40: The Île-aux-Tourtes Bridge is down to three lanes — one in each direction, and one lane that switches directions on weekdays. During weekends, the extra lane is for traffic to Vaudreuil-Dorion.
- Route 117: In St-Laurent, two northbound lanes and one southbound lane are closed on Marcel-Laurin Blvd. between the Décarie Interchange and St-Louis St., for work by the city of Montreal until the end of the year.
- Route 136: The Guy St. exit eastbound is closed until Oct. 25.
- Route 338: In Vaudreuil-Dorion, Route de Lotbinière is closed between Chicoine St. and St-Jean-Baptiste Ave. for water and sewer infrastructure work until the end of November.
- Highway 440: In Laval, asphalt work is being done on the eastbound service road between Highway 13 and Industriel Blvd., overnight between 10 p.m. and 5 a.m., affecting entrances and exits, until the winter.
- Highway 520: The highway is closed in both directions at Hickmore St., with traffic detoured via the service roads, until Oct. 25. Lanes are closed at 43rd Ave. until December.
- St-Antoine St.: In the Sud-Ouest, the street is closed between du Couvent St. and Rose-de-Lima St., and traffic is reversed to go eastbound between Rose-de-Lima and Atwater Ave.
- Pie-IX Blvd.: Work to extend the SRB Pie-IX south means only one lane is open in each direction between Pierre-de-Coubertin Ave. and Notre-Dame St. Cross streets between de Rouen and Ste-Catherine Sts. will be closed at Pie-IX.
- St-Urbain St.: The overpass over the Ville-Marie Expressway is closed for a long renovation, until the end of 2026. Pedestrian access is maintained.