Rumsey Bridge

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Rumsey Bridge

Rumsey Bridge Project

The Rumsey Bridge Project is currently in the environmental clearance phase.  The Rumsey Bridge is located in the Capay Valley on County Road 41 (CR 41) over Cache Creek.  CR 41 is located off of State Route 16 near the town of Rumsey.  The Rumsey Bridge was built in 1930, and lengthened in 1946 after Cache Creek washed out an abutment.  The bridge is now 311 feet long.  The original bridge consists of concrete through-arch spans that are historic in nature, but the 1930-era concrete is in poor condition.  The bridge structure is susceptible to scour from creek flows and the structure does not meet modern seismic standards. 

The County retained Quincy Engineering Inc (Quincy), a civil engineering consulting company to evaluate feasible bridge alternatives and complete the environmental clearance for the selected alternative.  Quincy completed an assessment of the seismic and scour vulnerabilities of the existing bridge, prepared a feasibility study of repair and rehabilitation options, and performed a lifecycle cost analysis for each proposed alternative.  Following this work, the Board of Supervisors selected the bridge replacement alternative in late 2015. Quincy and their environmental sub-consultant are completing the environmental studies and reports required by Caltrans, the lead agency responsible for certifying compliance with the Federal National Environmental Protection Act (NEPA).  Currently, Caltrans has submitted reports to the State Office of Historic Preservation (SHPO) and is working to complete a Memorandum of Agreement for the project, which is needed before NEPA can be certified by Caltrans.  Caltrans has also submitted the biological study completed for the project to the US Fish and Wildlife Service as required for NEPA clearance.  Following this work, the project can move to the next phase. 

If you have any questions or comments related to the project, please email Todd Riddiough at

Past Postings:

Beginning of Section 106 Process

December 15, 2015 Board of Supervisors Meeting

July 28, 2015 Board of Supervisors Meeting

February 2, 2015 Public Meeting

July 21, 2014 Public Meeting

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