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#20981 Date Of Advertisement From 5/22/2026 to 7/09/2026

Cowan & Thompson Construction Inc.

An Equal Opportunity Employer is requesting quotations from all qualified DBE, DVBE, MBE, WBE, SBE, LBE sub-contractors and/or material suppliers for the following project:

Reference
0662-6R4169
Project
COUNTYWIDE GUARDRAIL UPGRADES PHASE II
Location
CONTRA COSTA COUNTY
Owner
CONTRA COSTA COUNTY
Bid Date
06/09/2026 at 02:00PM

Scope / Description

We are requesting bids for the following trades and/or material suppliers:

  • 0016 - 130201 - WATER POLLUTION CONTROL PROGRAM - LS

Develop and implement a water pollution control program per Standard Specifications. Includes all BMPs, erosion control, sediment control, and waste management measures to prevent discharge of pollutants into San Francisco Bay and adjacent waters during construction.

  • 0009 - 120100 - TRAFFIC CONTROL SYSTEM

Furnish, install, operate, maintain, and remove the traffic control system for lane closures, shoulder closures, and ramp closures on the Richmond-San Rafael Bridge and approaches per Standard Specifications, special provisions, and as shown in the plans. Includes all signs, devices, and delineation for temporary traffic control during construction.

Bid Documents

Bid documents can be viewed at or obtained from:

Cowan & Thompson Construction Inc. is a non-union signatory contractor. Subcontractors must possess a current contractor's license, insurance coverage and worker's compensation for the entire length of the contract. All subcontractors will be required to sign our standard Subcontract Agreement, 100% payment and performance bonds may be required. Please call if you need assistance in obtaining insurance, bonding, equipment, materials and/or supplies.

Cowan & Thompson Construction Inc. intends to work cooperatively with all qualified firms seeking work on this project. We are an equal opportunity employer and will work with any interested subcontractor to identify opportunities to break items into economically feasible packages.

Plans and specs for this project are available for your review either at our office or online:

Cowan & Thompson Construction, Inc.

888 Howe Rd

Martinez, CA 94553

Phone: (925) 372-9412

Email: [email protected]

Joe Edwards

Contact

Cowan & Thompson Construction Inc.

888 Howe Rd
Martinez, CA 94553

Published 5/22/2026 on Construction Bid Source a Trade and Focus Publication located at http://www.constructionbidsource.com

Phone: (888) 988-1208

This solicitation Ad will be archived 30 days after the bid date