A one-alarm wildfire under the Bay Bridge that sent smoke billowing over Yerba Buena Island was extinguished around 5 p.m., but is still causing some traffic delays.
Fire units at 6 p.m. still remained at the scene in case the fire reignited, according to Lara Mooney, a spokeswoman for the U.S. Coast Guard, which has a base on the island.
One left lane of westbound traffic was still blocked as of 6:20 p.m., but all eastbound lanes out of San Francisco were open.
The fire started at 1 p.m., according to Mooney.
The traffic backup on the bridge contributed to citywide congestion misery as some drivers tried to get an early move on the Labor Day holiday weekend, creating extensive delays for commuters.
A request to send a California Department of Forestry & Fire Protection helicopter to help battle the fire was canceled when the fire was brought under control, according to department spokeswoman Mary Welna.
Also, in Redwood City, multiple fire crews responded to reports of a structural fire at 1328 Old County Road at 3:45 p.m., according to the San Mateo County Fire Department. The address is next to a railroad line near the corner Brittan Avenue and El Camino Real.
Firefighters also responded to a tree that reportedly caught fire after 6 p.m. near a sewage treatment plant on Mariner Island Boulevard in Foster City.