Montreal Weekend Traffic Disruptions: Bridge Lane Closures and Tunnel Shutdown
While traffic disruptions are expected to be relatively light this weekend in Montreal, several key infrastructure projects will create significant challenges for drivers navigating the city's road network. Transportation authorities have announced multiple closures and lane reductions that will affect commuters and travelers throughout the weekend period.
Major Bridge and Tunnel Restrictions
The Charles-De Gaulle Bridge, which serves as a crucial connection between Montreal and Terrebonne, will operate with reduced capacity from Friday evening through Monday morning. Beginning at 9:30 p.m. on Friday and continuing until 4 a.m. on Monday, the bridge will be limited to just two lanes in each direction. Motorists should anticipate narrower lanes measuring 3.3 metres wide and must adhere to a reduced speed limit of 50 km/h throughout the affected area.
Additionally, the St-Marc tunnel located beneath the Ville-Marie Expressway will be completely closed to traffic on Sunday for essential road surface repairs. During this closure period, Baile Street between St-Marc and Fort Streets will also be inaccessible to vehicles. This temporary shutdown is scheduled to occur during daytime hours, potentially affecting Sunday drivers and those with weekend travel plans.
Ongoing Infrastructure Projects Creating Additional Challenges
Beyond the weekend-specific closures, several long-term construction projects continue to impact Montreal's transportation network:
- Highway 10: Eastbound Exit 3 for Carrie-Derick Street remains permanently closed as part of the Bonaventure Expressway reconstruction project.
- Highway 19 (Papineau-Leblanc Bridge): Only two lanes are currently available in each direction between Montreal and Laval, with partial or complete nighttime closures expected to continue through the end of 2026.
- Highway 40 (Île-aux-Tourtes Bridge): This vital crossing has been reduced to five lanes total—two toward Montreal and two toward Vaudreuil-Dorion, with a fifth lane alternating directions according to rush hour patterns.
- Jean-Talon Street: Construction related to the Blue Line métro extension has necessitated partial closures along Jean-Talon Street, resulting in detours for several bus routes including the 141, 188, and 372.
- Berri Street (Ville-Marie): Major work at the Berri-UQAM métro station has led to the closure of Berri Street between Ste-Catherine and Ontario Streets, with de Maisonneuve Boulevard also closed between St-Denis and St-Hubert Streets until November 2027.
- Pie-IX Boulevard (Mercier—Hochelaga-Maisonneuve): Only one lane is available in each direction between Pierre-de-Coubertin Avenue and Notre-Dame Street due to work extending the SRB Pie-IX southward.
- St-Urbain Street (Ville-Marie): The overpass crossing the Ville-Marie Expressway is closed for extensive renovations expected to last until the end of 2026, though pedestrian access remains available.
Public Transit Adjustments and Alternative Routes
Public transportation users should be aware of several service modifications resulting from these infrastructure projects. The Société de transport de Montréal (STM) has implemented temporary shuttle services and route adjustments to accommodate affected areas. Bus routes 30 and 50 have been shortened to avoid construction zones, while express bus 427 has been suspended entirely. Additional departures have been added to the 27 bus along St-Joseph Boulevard in the Plateau neighborhood to help mitigate service disruptions.
Cyclists navigating affected areas should note specific detour routes, including diversions to Atataken and Ontario Streets in the Ville-Marie borough. Motorists are advised to plan alternative routes using St-Hubert, Atateken, St-Urbain, or Ontario Streets, or consider René-Lévesque Boulevard as potential bypass options.
Transportation officials recommend that drivers allow extra travel time, exercise caution in construction zones, and consider using public transit where possible to avoid weekend congestion. These ongoing infrastructure improvements, while creating temporary inconveniences, represent significant investments in Montreal's transportation network that will ultimately enhance safety and efficiency for all users.
