All lanes on the Bay Bridge are open, after emergency lane closures caused hours-long delays in both directions last night.  

Workers started repairing a large pothole in the westbound lanes of the western span just after 7 p.m. Wednesday night. 

A Caltrans spokesman says it was necessary to shut down three lanes eastbound and two lanes westbound for the repairs.

The closures caused gridlocked traffic on city streets well into the night for commuters and fans leaving AT&T Park.