Fog advisories were issued throughout the Bay Area for drivers Tuesday.
The Benicia Bridge got the alert at 3:24 a.m., according to the CHP. Advisories were also issued for the San Mateo, Bay, Golden Gate and Carquinez bridges.
Visibility in affected areas is at a half mile or less, according to the NWS.
The conditions lead to flight delays at San Francisco International Airport.
Airport duty manager Dan D'Innocenti said early arriving flights were delayed by 60 to 90 minutes because of the dense fog.
The fog has disrupted travel beyond the Bay Area, with airports up and down the West Coast affected, so it is a good idea to check out if you have a flight today.
"Some of the planes that don't have the navigational capabilities to fly into the smaller airports might get canceled," D'Innocenti said.
Meanwhile, flights are on schedule at the Bay Area's other major airports. Mineta San Jose International Airport spokeswoman Vicki Day said no delays were reported at the airport as of 9:30 a.m.
Oakland International Airport spokeswoman Rosemary Barnes said this morning, "Everything's running smoothly today here in Oakland."
Although most of the holiday travelers have returned home by now, the volume of travelers at the airports remains relatively strong, Barnes said. With people returning to work today, an influx of business travelers are making up for the drop-off in holiday travelers, she said.
"It will be a fairly steady day with that mix of travelers," she said.
Bay City News