The Bay Bridge's westbound upper deck reopened Sunday evening, more than 24 hours ahead of schedule following a planned holiday weekend closure for demolition and construction work.

With all planned demolition and maintenance work completed, California Department of Transportation Officials began removing cones from the bridge and approaches about 7 p.m., according to Caltrans spokesman Bart Ney.

The bridge was not scheduled to reopen until 5 a.m. Tuesday, but Ney said unexpectedly good weather had allowed work to progress quickly.

"The next time we plan to close the Bay Bridge will be to open the new Bay Bridge, Labor Day weekend 2013," Ney said.

The bridge's upper deck was closed at 8 p.m. Friday to accommodate demolition and maintenance projects related to the construction of a new eastern span. Crews demolished sections of roadway to make way for an inclined section that will eventually carry eastbound traffic.

The closure also pushed a surge of southbound traffic onto the Golden Gate Bridge.

Unofficial numbers show that more than 67,600 vehicles drove south over the bridge on Saturday, up from 39,799 vehicles on the Saturday of Presidents Day in 2011, Golden Gate Bridge, Highway and Transportation District spokeswoman Mary Currie said.