RELATED: Man survives falling concrete striking his car on Richmond-San Rafael Bridge
Crews need to do a permanent fix after concrete fell on to the lower deck a couple of weeks ago.
It forced officials to shut down the bridge for several hours.
RELATED: Bridge closure causes traffic nightmare for drivers in the Bay Area
Caltrans installed a metal plate as a temporary fix.
Drivers should be prepared for lane closures during the overnight hours.
Work is expected to wrap up by Tuesday at 4 a.m.
See more stories and updates about the concrete concerns on the Richmond-San Rafael Bridge.