Traffic accidents from throughout the state were reported Thursday morning as freezing rain from Wednesday night was covered with fresh snow.
In Weber County, 153 accidents were reported from midnight Wednesday until 11:30 a.m. Thursday, according to emergency dispatchers.
Among those accidents, nine caused injuries and medical personnel responded. There were 59 fender benders and 85 that were either vehicles sliding off or cars being stuck.
A dispatcher with the Davis County Sheriff's Department said between slide-offs, accidents and motorists needing assistance, there were 81 calls there in areas that were not state roads between midnight Wednesday and 11:30 a.m. Thursday.
A spokesman for the Utah Department of Public Safety, Dwayne Baird, said on state roadways and I-15, there were 38 crashes in Davis County between 9 p.m. Wednesday and 11 a.m. Thursday.
In that same time period, there were 168 crashes in Salt Lake County, 20 of which were injury accidents, Baird said.
A dispatcher with Box Elder Communications gave a rough estimate at noon Thursday of accidents between then and 10 p.m. Wednesday.
She said she believed there had been more than 60 traffic accidents, 24 of which involved property damage and three of which caused injuries. Woods Cross police were warning commuters to avoid where Highway 89 meets 500 West as a semi was off the road and blocking southbound traffic.
One delay in traffic occurred when a school bus needed help negotiating a turn and required police assistance.
Layton police could not readily give the time that this assistance was needed on Oak Hills Drive Thursday morning.
Those planning to fly Thursday also were experiencing huge delays as flights were suspended at the Salt Lake City International Airport after a cargo plane slid on a taxiway made slick by the winter storm. Airport spokesman Barbara Gann said flights were canceled or diverted around 9:30 a.m. Thursday.
Crews were working to de-ice and sand the runways.
The Federal Aviation Administration said the Boeing 757 cargo plane landed safely but slid on the ground.
FAA spokesman Allen Kenitzer says nobody was injured and the cargo plane was not damaged.
Gann called it a minor incident. But she says the airport was forced to halt operations for all flights because of slippery conditions.
The National Weather Service says Utah's Wasatch Front can expect several inches of snow Thursday.
Contact reporter JaNae Francis at 801-625-4228 or firstname.lastname@example.org. Follow her on Twitter at @jfrancis.