Highway 10: Eastbound Exit 3 for Carrie-Derick St. is permanently closed as part of the rebuilding of the Bonaventure. Highway 19 (Papineau-Leblanc Bridge): Two lanes are open on the bridge between Montreal and Laval in each direction, with partial or complete closings on some nights until the end of 2026. Highway 20 (Vaudreuil-Dorion): Work to renovate the intersection of Harwood Blvd. and Bellemare St. continues until August. The work involves partial and complete closings overnight between Route 342 and Ranger Ave., and narrow 3.2-metre lanes
and a 40 km/h speed limit otherwise. Detours will be set up using Chicoine St. Highway 40 (Île-aux-Tourtes Bridge): The bridge is down to five lanes — two toward Montreal and two toward Vaudreuil-Dorion, with a fifth lane alternating directions (toward Montreal from midnight to 10 a.m. weekdays and toward Vaudreuil-Dorion from noon to 10 p.m. weekdays and all weekends and holidays). Highway 520: Work on the overpass over 43rd Ave. is closing the service road between Riddle Ave. and 46th Ave. until about June
10. Work will also close 43rd Ave. and several other streets in the sector. Jean-Talon St.: Work on building the Blue Line métro extension means parts of Jean-Talon St. are closed. Affected buses (in particular 141, 188 and 372) are detoured onto Bélanger and Everett Sts. to avoid those areas, and a temporary shuttle bus (No. 814) has been established along Jean-Talon and Bélanger Sts. Ste-Catherine St. (Ville-Marie): Major work on the street and underground infrastructure means it is closed between St-Mathieu and Mackay Sts.,
and between de la Montagne and Peel Sts. Crossing streets are also blocked. Guy St. is closed at Ste-Catherine St. Berri St. (Ville-Marie): Major work at the Berri-UQAM métro station has resulted in Berri St. being closed between Ste-Catherine and Ontario Sts., and de Maisonneuve Blvd. being closed between St-Denis and St-Hubert Sts. until November 2027. Traffic is detoured via St-Hubert, Atateken, St-Urbain or Ontario Sts., or René-Lévesque Blvd., while cyclists are being diverted to Atateken and Ontario Sts. STM buses have been cut short
to avoid the area. For more information, visit stm.info. Pie-IX Blvd. (Mercier—Hochelaga-Maisonneuve): 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. Ste-Catherine St. is blocked at Pie-IX, so traffic is rerouted via Notre-Dame St. until end of June. St-Urbain St. (Ville-Marie): The overpass over the Ville-Marie Expressway is closed for a long renovation until the end of 2026. Pedestrian access is maintained. De Chateaubriand Ave. (Rosemont—La Petite-Patrie): Closed until the end of
June for sewer work between Jean-Talon and Bélanger Sts.
Montreal traffic, weekend detours, Victoria Bridge schedule changes for F1, Highway 10, Bonaventure rebuilding, Highway 19 Papineau-Leblanc, Highway 20 Harwood Bellemare, Highway 40 Île-aux-Tourtes, Highway 520 overpass 43rd Ave, Jean-Talon Blue Line extension, Ste-Catherine closures, Berri-UQAM métro, Pie-IX SRB extension, St-Urbain Ville-Marie Expressway overpass, STM buses, shuttle bus No. 814