A 51-year-old Utah man died Friday after the car he was driving slid into an oncoming vehicle west of West Yellowstone in an accident a law-enforcement officer said was likely the result of bad weather.

Scott Thomas of American Fork, was driving west on U.S. Highway 20 around 9:30 a.m. when he lost control of his Toyota Camry and crossed into the eastbound lane, slamming into an oncoming Ford F150 pickup truck, Trooper Dave Oliverson of the Montana Highway Patrol said.

Thomas was killed in the crash. His wife, who was in the car, and the driver of the pickup were taken by ambulance to Madison Memorial Hospital in Rexburg, Idaho, Deputy Gallatin County Coroner Ken Davis said. Their names and conditions were not known.

The crash occurred between the 7- and 8-mile markers on Highway 20. It appeared that everyone had been wearing their seat belts. The truck hit the Camry directly on the driver's side door, Oliverson said.

Bad road conditions in the West Yellowstone area were likely a factor in the crash, he said.

"It has been snowy and raining all day down in this area," Oliverson said. "There is a lot of snow on the ground (and) a lot of slush on the road. That slush is just horrible for front-wheel drive cars."

Troopers closed the westbound lane of Highway 20 in the vicinity of the crash for about three hours as they investigated the scene.