The Richardson Highway has been closed for at least 24 hours at Thompson Pass by several avalanches Friday, according to the state Department of Transportation and Public Facilities.

In a Friday statement from DOTPF, officials say no vehicles in the pass were hit by the avalanches, as reported in an initial Alaska State Troopers dispatch. The slides took place at about 6:30 a.m.

"One vehicle did hit snow already on the roadway at milepost 39.5," officials wrote. "The occupant of this vehicle was unharmed and has been transported to a safer location."

According to DOTPF spokesperson Jeremy Woodrow, two of the avalanches are each several hundred feet long and 30 to 40 feet deep, with several smaller avalanches accompanying them.

"Crews are saying this is one of the worst slides they've ever seen in Thompson Pass," Woodrow said.

The highway remains closed from Mile 12 to Mile 64, as crews wait to begin cleanup work. Woodrow says there's still a high possibility for additional slides in the area.

"(DOTPF) maintenance crews will allow the wet, heavy snow to stabilize before safely using all available equipment and personnel to clear the road," officials wrote. "The highway will be closed for at least 24 hours, depending on weather conditions."

Further updates on the closure are expected on the state’s road closures website.