ALPINE — A crash on I-15 caused major traffic delays through the Friday evening commute.

A truck pulling a trailer southbound on I-15 rolled south of Point of the Mountain near the state Route 92 interchange. All three people in the truck were wearing seat belts and were unharmed, the Utah Highway Patrol reported.

The truck and trailer blocked all lanes of traffic, forcing drivers to pass the accident on the shoulder and causing up to 6 miles of gridlock.

Meanwhile, onlookers also slowed traffic on northbound I-15.

All lanes were open within two hours, but residual delays persisted into the evening commute.