The crash happened around 12:45 p.m. Saturday, on I-15 southbound near mile marker 344.
Two troopers responded to the scene, one to investigate the crash, the other to provide traffic control.
A Ford Escape, approached the crash site, traveling 50 to 60-miles-per-hour.
The driver of the Escape, a 79-year-old male, from Canada, lost control of the vehicle and veered towards the trooper providing traffic control.
The trooper, who was sitting in his vehicle, saw the Escape veering towards him and put his vehicle in drive to avoid a collision.
The Escape hit the patrol car, totaling it. The impact caused the Escape to roll onto it's side.
The trooper was transported to the hospital with minor injuries, and has since been released.
The male of the Escape was transported to the hospital in critical condition, with a head injury. His wife, who was in the passenger seat, did not sustain any injuries.
"My opinion is Utah needs a wake up call. Drivers don't drive with any common sense when it snows," said driver Scott Armstrong.
"Wow, people just need to be more careful. They need to keep their eyes open for everything that is around them," said driver, Kellie Creager.
This marks the 16th trooper hit this year. That amounts to 8 troopers a month, two troopers every week.
UHP asks motorist to slow down. When they see the red and blue flashing lights ahead of them, they need to slow down and pass the incident with caution.