The restoration of the historic Wohler Road Bridge spanning the Russian River, situated approximately 16km northwest of Santa Rosa, has been approved by the Board of Supervisors and the construction is anticipated to start this summer. The board had granted an $18 million construction contract, in order to seismic retrofit the bridge. The completion of the bridge is expected by the end of 2025.
Specifically, Ghilotti Construction Company, Inc. won the contract as the most economical bidder after a competitive bidding process that included four separate construction firms. After the approval from Caltrans in 2023, the Federal Highway Bridge Program committed to covering 100% of the project's estimated cost, which stands at $17,994,621
As of present, the bridge is one lane that was constructed in 1922 and deemed seismically deficient. Therefore, it will undergo significant upgrades including a new lightweight concrete deck, seismic isolation bearings and joints, reinforcement of steel trusses, and foundation reinforcement. All of the above are designed to comply with contemporary seismic standards and state regulations for bridges.
District 5 Supervisor Lynda Hopkins expressed gratitude to various stakeholders who contributed to advancing the project to the construction phase, while she expects patience and perseverance throughout the process, which includes environmental, geotechnical, hydraulic, and hydrological studies, intricate negotiations for utility coordination, architectural assessments, and planning.
Sources: sonomacounty.ca.gov, hoodline.com, historicbridges.org
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