An overturned box truck is blocking southbound traffic on Doyle Drive in San Francisco this afternoon, according to the California Highway Patrol.
The crash was reported south of the Golden Gate Bridge at 2:28 p.m.
The truck is blocking the southbound connector to Lombard Street, and traffic is being diverted onto 19th Avenue.
CHP Officer Kevin Bartlett said absorbent material has been requested to clean up a spill at the crash site.
A Sig-alert has been issued for the area.