Road closures on Mercier Bridge and Highway 25 this weekend
Posted October 20, 2025 4:15 pm.
Last Updated October 20, 2025 5:31 pm.
Drivers can expect delays this weekend around the Honoré-Mercier Bridge as repair of steel elements is expected. Meanwhile, northbound direction of Highway 25 will be closed Friday night.
Honoré-Mercier Bridge
The interventions on Honoré-Mercier Bridge require the implementation of a partial obstruction. Transport Quebec says the bridge will be reduced to one lane in each direction starting from Friday, 11 p.m. to Monday, 5 a.m.
Episodes of congestion are to be expected. Drivers are being urged to seek alternate routes if possible.
Highway 25
The department of Transportation and Sustainable Mobility said that Highway 25 northbound will be closed between Exit 5 (Route 138, Sherbrooke Street, Yves-Prévost Boulevard) and the entrance from Yves-Prévost Boulevard during the night of Friday, 11 p.m. to Saturday, 8 a.m.
The entrances from Hochelaga St. and Sherbrooke St. E. will be closed 30 minutes before the highway closes.
The ministry noted the highway might once again be closed Saturday night, if needed to complete the work.
This closure is necessary in order to divert northbound lanes of Highway 25 to create a work zone.
In the event of poor weather conditions, the repair work might be cancelled or postponed. Drivers are advised to check Québec 511 to plan their trips accordingly.
