BRIGHAM CITY -- Falling snow and freezing temperatures produced slip-and-slide conditions along a one-mile stretch of Interstate 15 Saturday morning, causing 10 separate crashes involving 29 vehicles.
According to the Utah Highway Patrol, the havoc began to unfold around 8:30 a.m.
"With the slick road conditions, and drivers not slowing their speeds down, multiple crashes occurred within the mile stretch of 361 and 362 in the northbound lanes," UHP Trooper Lawrence Hopper said in a statement.
The first accident involved a semi truck and two cars that lost control and collided near exit 362, Hopper said.
A four-car crash occurred directly south of the first crash, followed by a six-vehicle pile-up involving a tanker truck that was pulling a pup trailer.
Several other two and three-vehicle crashes also occurred nearby, all heading north, Hopper said, with the exception of a semi truck that jackknifed in the southbound lanes of I-15 at mile marker 361.
According to Hopper, four accidents resulted in injuries, with the most serious being a woman involved in the six-vehicle crash who had to be extricated from a tan Honda Accord. She suffered a broken pelvis and a broken leg and was transported to the hospital in serious condition, Hopper said.
Northbound I-15 traffic had to be diverted to U.S. Highway 89 through Perry and Willard until noon while clean-up took place.
By early afternoon, Utah Department of Transportation had plowed and salted the road and traffic flow had returned to normal, Hopper said.
Contact reporter Cathy McKitrick at 801-625-4214 or firstname.lastname@example.org. Follow her on Twitter at @catmck.