Dumbarton Bridge, Copyright 2010, Roy Tennant, FreeLargePhotos.com
SAN FRANCISCO (AP) - People who use the Dumbarton Bridge to get across San Francisco Bay will have to find an alternate route during the holiday weekend.
The California Department of Transportation has closed the bridge for the entire Labor Day weekend so crews can perform seismic retrofit work.
The work includes replacing the expansion joint on the eastern side of the bridge across all six lanes of traffic.
The closure began late Friday and will end as late as 5 a.m. Tuesday.
Caltrans officials say the work being done this weekend keeps the retrofit work on track to be completed by early 2013.
The Associated Press