To: Board of Supervisors
From: Public Works
Agenda Section: Consent
Vote Requirement: Majority
SUBJECT:
title
Request for Proposals No. DPW2026-005 Regarding the Provision of Design Engineering and Environmental Services for the Rehabilitation of Maple Creek Bridge 04C0061
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RECOMMENDATION(S):
Recommendation
That the Board of Supervisors:
1. Approve, authorize the Director of Public Works to advertise and distribute, the attached request for proposals regarding the provision of design engineering and environmental services for the rehabilitation of Maple Creek Bridge 04C0061; and
2. Direct the Clerk of the Board to provide the Department of Public Works with one (1) fully executed certified copy of the Board order related to this item.
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STRATEGIC PLAN:
This action supports the following areas of your Board's Strategic Plan.
Area of Focus: Core Services/Other
Strategic Plan Category: 9999 - Core Services/Other
DISCUSSION:
On Feb. 24, 2026, Humboldt County received Highway Bridge Program (HBP) funding for the preliminary engineering phase to rehabilitate Maple Creek Bridge (No. 04C0061). Built in 1954, the 60-foot-long bridge spans Maple Creek approximately 12 miles from Korbel. While the deck and superstructure are in good-to-fair condition, the substructure is rated poor due to active, long-term slope instability first documented in 1971.
Recent bank movement has forced Abutment 2 to migrate toward Abutment 1, causing the steel girders to jam against the backwalls. This pressure has turned the superstructure into an unintended structural strut. Consequently, the steel rocker bearing assembly at Abutment 1 is unseated and no longer supports its girder. Past maintenance efforts to cut expansion gaps into the girders have failed as continuous slope movement closed the gaps.
Due to the technical requirements for bridge design and environmental studies, specialized consultant services are required to complete the project. Public ...
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