An aging building undergoing demolition collapsed at the intersection of Saint-Denis and René-Lévesque in Montreal on Tuesday. Emergency services were alerted to the site at 4:50 p.m., and officials have confirmed there are no injuries reported following the structural failure.
What caused the collapse?
According to Martin Guilbault, a spokesperson for the Montreal fire department, the building’s collapse was triggered when a wall gave way during scheduled demolition work. The site, which is owned by Picone Doumit Holdings, is located directly across from the CHUM hospital complex. Witnesses nearby reported a significant noise at the time of the incident, with local resident Stéphane describing it as a “méchant vacarme” (a nasty racket).

Next steps for traffic and site cleanup
Authorities expect the debris removal process to be largely completed by Tuesday evening. The Montreal police remain on-site to manage traffic flow along the boulevard René-Lévesque. Officials have stated that no additional road closures are planned beyond those already necessitated by the ongoing construction and demolition work.
Frequently Asked Questions
Were there any injuries reported?
No, authorities have confirmed that there were no injuries resulting from the collapse.
Who owns the building?
The building is owned by the company Picone Doumit Holdings.
Will there be new road closures due to the collapse?
No, officials indicated that no additional lanes will be closed beyond the existing ones already impacted by the demolition project.
How should the city balance the preservation of historical architecture with the safety requirements of modern urban demolition?
