A multiple-car crash blocked all westbound lanes of SR 16 at Sprague Street in Tacoma on Sunday morning.
The State Patrol said five vehicles were involved. One vehicle was the first car to spin out on ice and a chain reaction of four other vehicle collisions started.
Troopers say there were injuries but details were not known.
The State Patrol said via Twitter that icy conditions were a factor but not the cause of the pile-up.
“The person behind the wheel causes the collision. Adjust your driving 4 conditions,” WSP said.