To: Board of Supervisors
From: Public Works
Agenda Section: Consent
SUBJECT:
title
Storm Damage Repair to Mattole Road (3C010) Post Mile 6.50
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RECOMMENDATION(S):
Recommendation
That the Board of Supervisors:
1. Approve the attached plans and specifications for the Mattole Road (3C010) Post Mile 6.50 Storm Damage Repair Project; and
2. Direct the Clerk of the Board to advertise the above-mentioned project as required by Section 22037 of the California Public Contract Code, with bids to be opened on Tuesday, Dec. 15, 2020 at 2:00 p.m.
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SOURCE OF FUNDING:
Road Fund (1200); Federal Highway Administration Emergency Relief Storm Damage Funds
DISCUSSION:
On Mar. 7, 2017, the Governor of the State of California declared a disaster for Humboldt County due to severe winter storms, flooding and mudslides. Mattole Road (3C010) Post Mile 6.50, in the Petrolia-Honeydew area of southern Humboldt County, experienced roadway settlement and shoulder failure. Emergency temporary repairs were done at the time of the disaster to maintain essential traffic flows.
On Sept. 28, 2020, the Humboldt County Department of Public Works ("Public Works") received Federal Highway Administration funding approval to proceed with the Mattole Road (3C010) Post Mile 6.50 Storm Damage Repair Project. GHD, Inc. subsequently prepared the attached plans and specifications for the project based on a topographic survey of the damaged area that was prepared by Public Works and a geotechnical study prepared by Crawford and Associates. The work proposed in the attached plans and specifications consists of constructing geosynthetic reinforced embankment, installing deep sub-drainage and storm drainage systems, restoring the roadway to original width and adding sediment and erosion control items.
Accordingly, Public Works recommends that the Board of Supervisors approve the attached plans and specifications and advertise the Mattole Road (3C010) Post Mile 6.50 Storm Damag...
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