Mobility Montréal’s announced the main construction sites that will be subject to major traffic disruptions in the Montréal metropolitan area during the fall of 2026.
Officials say this work is essential to maintain, repair and upgrade transportation infrastructure, but it will inevitably have an impact on travel.
In all, 42 major projects are planned for the coming months, including 4 new ones. Of the 52 projects announced last spring, 14 have now been completed, including:
- Repair of overpasses, as well as paving and drainage work on Highway 640 between Sainte-Marthe-sur-le-Lac and Blainville (Ministère des Transports et de la Mobilité durable);
- Infrastructure work on Saint-Denis Street in the CHUM sector (City of Montreal);
- Infrastructure work on the Airport Road in Longueuil (City of Longueuil).
The obstructions associated with active construction sites will not all occur at the same time, but will be spread out throughout the coming months. To mitigate the impact of the closures on traffic, several works are planned during the nights and weekends, when traffic on the network is lower. Mobility Montréal’s partners are constantly planning for obstructions to avoid the closure of several strategic roads simultaneously.
Key areas to watch this fall
- The southwest of the Island of Montreal, where work is planned on the Victoria Bridge, as well as on its approaches, on Bridge Street. Work is underway on the A-10 (Bonaventure) and occasional night closures are planned on the Hwy. 136 (Ville-Marie and Viger tunnels). Finally, a complete closure of the northbound Samuel De Champlain Bridge is planned for the weekend of August 28.
- Downtown Montreal, where several construction sites are continuing on the municipal network, including the rehabilitation of sewers on Guy Street, as well as infrastructure work in the area of the Berri-UQAM metro station.
- The centre and east of the Island, including the continuation of major repairs to the Louis-Hippolyte-La Fontaine tunnel, the extension of the blue line of the metro and the repair of the underpass on Papineau Street (between Rosemont Boulevard and Saint-Grégoire Street).
Details of the main planned obstructions can be found on the Mobility Montréal website.
International event
In addition to the road works, the fall will also be marked by the holding of the UCI Road World Championships Montreal 2026. In September, this major event will require major closures on both the municipal and highway networks, including:
- The complete closure of Highway 10 (Bonaventure), towards downtown, on 19, 20, 21 and 22, between 6:30 a.m. and 4:30 p.m.
- The complete closure of the Samuel De Champlain Bridge, toward Montreal, on the morning of September 26 and 27.
- The closures planned before and during the event are available on the promoter’s interactive maps, and the Québec 511 map.
The public is invited to plan their trips and to use public and active transit when possible. A special World Cycling ticket, All modes ABC, will be available at the UCI Road World Championships.
To facilitate travel during the competition days of September 21 and 22, a free park-and-ride lot will be available to the public at the Chevrier parking lot in Brossard. Free shuttles will run to the Du Quartier du REM station between 6 a.m. and 10 a.m. and between 3:30 p.m. and 7 p.m. This measure is intended to encourage the use of public transit and reduce the impact of road closures on travel
Key Facts
- Mobility Montréal is a group of some twenty partners who work together to mitigate the impact of road construction sites on traffic.
- This spring and summer, more than 345 traffic obstructions were avoided thanks to the coordination work between the partners.
- The Réseau de transports de Longueuil’s (RTL) new 901-Taschereau bus line is now in service, offering more direct and simpler trips along Taschereau Boulevard. It marks the launch of the BUS+ program, which aims to improve the efficiency and attractiveness of the bus network throughout the metropolitan area and is part of the ARTM’s Strategic Development Plan.
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