All lanes on the Golden Gate Bridge have reopened following a multi-vehicle collision, according to the California Highway Patrol.

Southbound lanes were blocked for about 45 minutes by the crash, which was reported at 3:27 p.m. Initial reports indicate the accident, which involved at least three vehicles, was a head-on collision, CHP Sgt. John Carman said.

Only minor injuries were reported, but it was unclear how many people were involved.

All southbound lanes and one northbound lane were closed but reopened at 4:15 p.m.