Crews on-scene of big rig accident in San Francisco

(Images from SKY7-HD show a big rig laying on its side at Cesar Chavez street in San Francisco.)

June 24, 2011 11:34:03 AM PDT
Emergency crews are on the scene of a big rig accident on Highway 101 in San Francisco.

The California Highway Patrol says the 16-wheeler overturned on the eastbound Cesar Chavez Street off ramp from Southbound 101 around 9:40 a.m. Friday.

The driver experiences minor injuries.

Authorities aren't saying exactly how the accident happened. Tow trucks are now trying to upright the vehicle so they can re-open the ramp.