Repair work expected on Mercier Bridge over Thanksgiving weekend

The Honoré Mercier Bridge, which crosses the St. Lawrence River and connects Montreal to the South Shore. (Courtesy: The Jacques Cartier and Champlain Bridges Incorporated)

Posted October 6, 2025 7:20 pm.

Last Updated October 7, 2025 11:16 am.

Drivers can expect delays again this weekend around the Honoré Mercier Bridge as more repair work is expected.

Transport Quebec says the bridge will be reduced to one lane in each direction starting at 11 p.m. on Friday, Oct. 10.

This is expected to last until 5 a.m. on Tuesday, Oct. 14.

Honoré Mercier Bridge – Major obstructions – Friday, October 10 to Tuesday, October 14, 2025 (CNW Group/Ministère des Transports et de la Mobilité durable)

Drivers are being urged to seek alternate routes if possible.

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.

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