The crash, which involved a California Department of Transportation truck and another vehicle, was reported at about 8:20 a.m. just east of Treasure Island, California Highway Patrol Officer A. Paulson said.
The No. 1 westbound lane was blocked while the crash was cleared from the area, Paulson said.
A power pole on the Bay Bridge was damaged in the crash, according to Paulson.
No injuries were reported.
A Sig-alert issued at 8:30 a.m. was canceled around 9 a.m.