A barge struck the Richmond-San Rafael Bridge Thursday evening, according to the Coast Guard. The extent of damage, if any, was not immediately known.
The bridge was not closed following the 6:20 p.m. accident, according to the California Highway Patrol.
No pollution has been detected in the water, Coast Guard Petty Officer Anastasia Devlin said.
Fog limited visibility in portions of the Bay Area on Thursday night, although it was not clear whether that played a role in the accident. Visibility was three miles at Oakland International Airport and a mile and a half at San Francisco International Airport, said meteorologist Steve Anderson of the National Weather Service.
The Coast Guard pushed the barge away from the bridge and anchored it, and was still investigating the incident Thursday night.
State officials and the Coast Guard were examining the bridge, according to the CHP.
There was no word on whether the barge was carrying cargo at the time of the collision.
Contact Scott Marshall at smarshall@bayareanewsgroup.com or (925) 945-4782.
