A State Patrol trooper’s squad car was struck Thursday on Hwy. 169 in Shakopee by a driver making a U-turn.

The trooper, who was parked on the roadway’s right shoulder while making a traffic stop, was not injured. The driver making the U-turn suffered serious injuries and was taken to Hennepin County Medical Center, according to the State Patrol.

The crash, which backed up traffic for miles, began when a driver tried to make a U-turn in the traffic lane of Hwy. 169, south of County Road 21. The vehicle was struck broadside by a northbound vehicle before it hit the trooper’s car. No other information was available Thursday afternoon.