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Worker Killed, Three Injured in Blainville Construction Pit Collapse

Quebec authorities launch investigation into retaining wall failure at shopping centre site as emergency responders secure scene.

Multiple vehicles fell into a construction pit in Blainville, Que., after one of its retaining walls collapsed.

Overview

  • A retaining wall at a construction site in Blainville, Quebec, collapsed on May 20, 2025, causing vehicles and materials to plunge into an excavation pit.
  • One worker was killed in the incident, while three others sustained injuries; two were hospitalized, and one was treated at the scene.
  • Emergency services, including firefighters, police, and ambulances, responded quickly to rescue trapped individuals and secure the site.
  • The collapse occurred during the foundation-building stage of a new shopping centre on Michèle-Bohec Boulevard, where temporary retaining structures were in use.
  • Quebec's workplace safety board and construction code enforcement agency have opened a formal investigation into the structural failure and compliance with safety protocols.