Route 138
The Mercier Bridge will be one lane in each direction from 3 a.m. Saturday to 5 a.m. Monday. The access from Airlie St. will be closed during this time. LaSalle Blvd. will also be closed between Lafleur Ave. and Trésor-Caché Ave.
Highway 520
The Côte-de-Liesse Rd. service road westbound will be closed between Montée de Liesse and Renaud Ave., from 10 p.m. Friday to 5 a.m. Monday, as work continues to prepare the overpass for replacement. The exit from Highway 13 north to Highway 520 west will also be closed starting at 9:30 p.m.
Work on the overpass over 43rd Ave. will resume on Monday, with highway traffic diverted to the service roads for about three weeks.
Route 340
In Vaudreuil-Dorion, Cité-des-Jeunes Blvd. will have alternating traffic between Petite-Rivière Rd. and de la Gare Blvd., from 8 p.m. Friday to 9 p.m. Sunday.
Bell Centre
A watch party for Game 6 of the Canadiens-Lightning playoff series will close off streets in the area bordered by de la Montagne and Peel Sts., Canadiens-de-Montréal Ave. René-Lévesque Blvd., from 1 p.m. Friday until after the game.
Réseau express métropolitain (REM)
The network will open late on Saturday and Sunday, with the first trains leaving Deux-Montagnes and Brossard at 7:30 a.m. and from Gare Centrale at 7:35 a.m.
Continuing disruptions
REM: Trains leaving Brossard have two alternating destinations — Deux-Montagnes and Bois-Franc. The latter trains will continue to Anse-à-l’Orme station when that branch opens on May 18. Display boards at the stations indicate the destinations of each train (those that say they go to Anse-à-l’Orme will disembark all passengers at Bois-Franc, who can take the next train toward Deux-Montagnes to continue down the line).
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 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).
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 30 and 50 have been cut short to avoid the area, and express bus 427 has been suspended, with additional departures added to the 27 bus on St-Joseph Blvd. in the Plateau. For more information, visit stm.info.
Viger Ave. (Ville-Marie): Two of three lanes are closed westbound between Clark and Côté Sts. until May 18.
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.
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. One of two lanes is also closed between de la Gauchetière St. and Viger St. until May 18, but the bike lane remains open.
De Chateaubriand Ave. (Rosemont—La Petite-Patrie): Closed until the end of June for sewer work between Jean-Talon and Bélanger Sts.