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.
Status
Accepting Bids
| Prebid Date | 2/2/26 10:00am |
| Bid Date | 2/17/26 2:00pm |
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.