The roof of a large storage barn in Fredericton's Odell Park collapsed Wednesday night under the weight of snow.

No one was in the building at the time.

The large barn was the former home of the Fredericton Pony Club and used by the city to store equipment used to maintain parks, including a new tractor with only 20 or 30 hours of use, said Don Murray, the manager of parks and trees.

"We're now waiting to get the roof off that equipment and see what damage is done in there," said Murray.

Murray received a phone call from the park's caretaker at about 10 p.m. on Wednesday to tell him the roof had collapsed.

Odell Park barn collapse

The city-owned storage barn in Odell Park collapsed from the weight of snow on Wednesday night. (CBC)

City staff were to be in the building at 7:30 a.m. on Thursday to transport some of the city's indoor skate park ramps to the site of a weekend children's fair.

"It could have been much worse," said Murray.

"We're very fortunate it happened at 10 o'clock at night when no staff were around it."

Murray said the park caretaker was "quite excited" when he called him to say the barn had collapsed.

"I said, `Troy, don't go in it,'" Murray said.

"And Troy said, `There's nothing to go in. The roof is on the ground and I'm standing on top of it now.' It basically fell right down."

The barn was constructed in the late 1980s as a riding arena for the Fredericton Pony Club and was acquired by the city when the club shut down operations some years later.

"It's very well-built building structurally," said Murray.

"We've never had an issue with it before. We've never cleared snow off it before. And we were quite surprised that the roof has come down."

It's the second large structure to lose its roof in the city this week after a storm dumped approximately 40 centimetres of heavy snow and ice pellets on the area.

The Best Metals building in the industrial park also lost its roof earlier in the week.