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  5. ›ER-15J1 (004) 2021-18 Sir Francis Drake Blvd MP 20.28…

County of Marin·California

ER-15J1 (004) 2021-18 Sir Francis Drake Blvd MP 20.28 Landslide Repair

Closes 6/4/2026$400k – $500kRequest for Proposal
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Description

This solicitation seeks a qualified contractor to design and construct a 75‑ft concrete retaining wall with soldier piles, relocate a culvert down‑spout, improve drainage, restore the embankment with native vegetation, and repave approximately 100 ft of roadway on Sir Francis Drake Boulevard in Marin County. The work must be performed within the County right‑of‑way and complies with California prevailing‑wage and licensing requirements. Bidders must submit a bid bond (10 % of bid) and be registered with the California Department of Industrial Relations. No pre‑bid meeting is scheduled; a mandatory site visit is required before submitting a bid.

Attached files

Contact

Vincent Yan(Civil Engineer)

[email protected]

(415) 473-7266

Key dates

Opened
5/13/2026
Questions due
5/29/2026
Closes
6/4/2026

Last updated

Details

Type
Request for Proposal
Industry
Civil Engineering
NAICS
237990
Solicitation №
2021-18

Budget estimate

$400,000 – $500,000

The Engineer’s Estimate for the project is $450,000, which serves as a solid baseline. Considering typical contractor mark‑ups, risk allowances, and possible change orders, a realistic award value range would be approximately $400,000 to $500,000. Factors influencing the range include site conditions, material costs, labor rates (prevailing‑wage), and any unforeseen geotechnical challenges.

AI estimate from the solicitation

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