Rotten wood, insect damage discovered after Fort Gibraltar walkway collapse, documents reveal

A rotted support beam and possible damage from carpenter ants were among several issues discovered after an elevated wooden walkway at Winnipeg's Fort Gibraltar collapsed during a school field trip earlier this year, documents obtained by Radio-Canada through a freedom of information request reveal.

Those issues were detailed following inspections of the site in the city's St. Boniface area after the walkway collapsed in May — an incident that sent 18 people to hospital and allegedly left one boy at risk of being permanently disabled.

One inspection of the walkway done hours after it collapsed noted it appeared a "supporting beam was rotten and gave away," leading to two sections collapsing within the north side of the fort.

Another inspection the next day — which the document said took a closer look at beams, columns and the wooden palisade fence surrounding the site — found "evidence of insect damage (possible carpenter ants)" and "general wood rot" in a number of areas.

The northeast corner of the walkway, structural components and the fence were also noted to be "more worn than other areas," while stairs, handrails and guardrails showed "significant damage," the document said. 

Raymond Garand, who worked as Festival du Voyageur's chief operating officer for more than 20 years before leaving the organization in 2016, said in a Tuesday interview that the walkway and surrounding fence required constant upkeep during his time there.

That included repairs that were completed around 2006 to replace parts of the structure because the wood was rotting, he said.

Garand said the organization also had to change a few planks on the elevated walkway every year because of rot. He also said he regularly treated the structure with a wood preservative product.

The walkway collapsed while a group of 10- and 11-year-old students from St. John's–Ravenscourt School were on a field trip to the site on the morning of May 31, sending 17 children and one adult to hospital.

A total of 28 people were assessed at the scene, and three of the children taken to hospital were in unstable condition. 

Most of the injuries they suffered were orthopedic-related and none were severe or life-threatening — and only one injured boy had to stay in hospital to get orthopedic surgery for a fracture, officials said at the time.

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One of the injured children's parents later filed a lawsuit in connection with the incident, alleging their son might be permanently disabled after falling from the walkway and accusing the Festival du Voyageur and the City of Winnipeg — which owns the site managed by the non-profit — of negligence.

After the walkway collapsed, the city said it directed the Festival du Voyageur to retain a professional engineer to assess the entire complex for any unsafe conditions and do any necessary repairs, but did not say what caused the collapse.