A fog advisory is in place for the Carquinez, Benicia and Bay bridges. Earlier this morning fog warnings were issued for the Dumbarton and San Mateo bridges, the CHP said.
As of 4:55 a.m. the advisory on the San Mateo Bridge was lifted, according to the CHP.
Drivers on the Bay Bridge are experiencing heavy fog conditions and the CHP reports the bridge's lights are out on the eastbound side, as of 4:12 a.m.
A dense fog advisory has been issued early this morning by the NWS for North Bay interior valleys. The alert is in effect until 9 a.m.
Visibility is down to a quarter mile and in some areas is only at an eighth of a mile, weather officials said. Drivers are advised to slow down and use headlights in the fog.