Multiple collisions blocked all lanes of State Route 900 at South 129th Street on West Hill at about 9:15 a.m. Thursday morning, according to the Washington state Department of Transportation.

By about 9:20 a.m. eastbound lanes and one westbound lane were reopened but one westbound lane remained blocked.

That final lane was reopened at about 10:20 a.m.

The state patrol responded to the scene.