Grayson & Walnut Creeks Levee Improvement at CCCSD Treatment Plant Project

Agency: Contra Costa County
State: California
Type of Government: State & Local
NAICS Category:
  • 237990 - Other Heavy and Civil Engineering Construction
Posted Date: Jan 14, 2026
Due Date: Feb 17, 2026
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Grayson & Walnut Creeks Levee Improvement at CCCSD Treatment Plant Project
General work description: The work to be done generally consists of raising the western levee along Grayson Creek and Walnut Creek between State Route 4 to the south and BNSF railroad tracks to the north to increase the flood protection for the CCCSD wastewater treatment plant located in Martinez. Work includes placing and compacting levee fill, constructing concrete flood walls, reconstructing a concrete maintenance road, removing railroad tracks, replacing fence and gates, paving driveway conforms and adjusting and relocating various utilities.
Order Remove Order hard copies for this entire project for $200.00

StatusAccepting Bids
Prebid Date 2/2/26 10:00am
Bid Date 2/17/26 2:00pm
Company & Contacts
Contra Costa County
Jenna Caldwell
925-313-2020
Location

Martinez, CA

Engineer's cost estimate: BASE BID: $7,130,000

Bid Additive 1: $310,000

Bid Additive 2: $352,000

Bid Alternate 1: $1,075,000

A virtual pre-bid meeting will be held on Monday, February 2, 2026, at 10:00 a.m. to cover project construction and the County’s Bidder Outreach Program. Prospective bidders attendance is recommended but not mandatory. Virtual meeting instructions can be found on the Contra Costa County Public Works Department’s website at www.cccounty.us/pwprojects .

* Disclaimer: This website provides information about bids, requests for proposals (RFPs), or requests for qualifications (RFQs) for convenience only and does not serve as an official public notice. Individuals who wish to respond to or inquire about bids, RFPs, or RFQs should contact the relevant government department directly.

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