To: Board of Supervisors
From: Public Works
Agenda Section: Consent
Vote Requirement: Majority
SUBJECT:
title
Request for Proposals No. DPW2026-004 Regarding the Provision of Design Engineering and Environmental Services for the Rehabilitation of Mattole River Bridge 04C0189
end
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 Mattole River Bridge 04C0189; 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.
Body
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 funding for the preliminary engineering phase for the rehabilitation of the Mattole River Bridge 04C0189. Also known as A. W. Way Bridge, the project is located on the Mattole Road between Honeydew and Petrolia in the southern portion of the County.
The Mattole River Bridge, originally constructed in 1935, is currently rated in poor condition due to a failed wingwall and concrete spalling at multiple locations. In addition, the existing single-lane configuration includes a substandard horizontal curve on the western approach at the location of the failed wingwall, which has contributed to multiple vehicular accidents. The proposed Project will address these deficiencies through replacement of the failed wingwall with a new retaining wall, geometric improvements to the western approach to enhance safety, and repair of deteriorated elements within the bridge superstructure. All improvements will be designed to preserve the historic character of t...
Click here for full text