Wohler Bridge (County of Sonoma)
The historic Wohler Bridge over the Russian River is getting a seismic upgrade. The Board of Supervisors awarded an $18 million construction contract for the seismic retrofit of the bridge, located 10 miles northwest of Santa Rosa. The existing seismically deficient one-lane bridge, which was completed in 1922, will receive a new lightweight concrete deck, seismic isolation bearings and joints, steel truss reinforcement and foundation reinforcement designed to meet current seismic design standards for bridges. Ghilotti Construction Company will begin work on Wohler Bridge this summer and expect to be finished by the end of 2025.