SEQUIM –– Medics treated minor injuries from a wreck involving two cars and a semi-trailer truck that prompted the closure of U.S. Highway 101 for about an hour and half this afternoon.

The wreck happened shortly after 2:30 p.m. and left one car in a ditch and another blocking the highway at Barr Road.

The highway was clear by 4 p.m., the state Department of Transportation said.

Emergency medical technicians with Clallam County Fire District 3 treated minor scrapes and no one was taken to a hospital, said State Patrol Trooper Rick Ward, investigator at the scene.

Ward said that crash involved several people, including an infant, but did not know how many were involved, their names, ages or where they lived.

Ward said the two cars were traveling westbound through the construction zone near the Barr Road intersection.

The lead car slowed because of traffic and was hit from behind by the second car, Ward said.

The collision spun the lead car into the oncoming lane where it collided with an eastbound semi, he said.

Ward said the driver of the rear car told him that he had looked away from the road and did not notice the lead car had slowed.

The rear end of the lead car was crushed from the initial contact and the front passenger segment was severely damaged from the collision with the semi-trailer truck.

The rear car ended up in the north ditch with a crumpled front end.

All involved were wearing seat belts, Ward said.

No citations were issued.

Ward said the State Patrol is investigating if the second driver should be cited for inattentive driving.