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Browse all Contra Costa County, CA

#822145

04-3G4524 Bridge Deck and Joints Repair, Contra Costa & Solano Counties, CA

General work description: Bridge deck and joints repair.

Post Date: 05/04/2026 Bid Date: 06/04/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, C8 - Concrete Contractor: Pavement, Driveways, Sidewalks, Curbs, Gutters, Flatwork, ADA Ramps Pedestrian Improvements, CIP Concrete
#825140

Giant Rd Bridge Repair Project, San Pablo, CA

The Project is located along Giant Road over San Pablo Creek just south of Parr Blvd and is described as follows: The City of San Pablo proposes preventive maintenance work on the Giant Rd Bridge over San Pablo Creek (Bridge No.28C-0326). The proposed work will include the removal and replacement of bridge deck joints, the removal and replacement of unsound concrete, cleaning of reinforcement, pavement conform, and the application of polyester concrete overlay across the entire bridge deck. Additionally, the roadway striping will be removed and replaced. All work will take place within the Citys right-of-way
Post Date: 05/20/2026 Bid Date: 06/04/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, C8 - Concrete Contractor: Pavement, Driveways, Sidewalks, Curbs, Gutters, Flatwork, ADA Ramps Pedestrian Improvements, CIP Concrete, Highway, Roadways, Bridge, Railroad, Airport Construction, Maintenance & Repair: Horizontal Construction, C21 - Demolition Contractor, Building Removal and/or Relocation, Wrecking & Hauling
#825143

Giant Road Pavement Rehabilitation Project, San Pablo, CA

The project is located on Giant Road, between Brookside Drive and Miner Avenue. The scope of work includes roadway rehabilitation, consisting of base failure repairs, crack sealing, slurry sealing, construction of concrete curb ramps, and roadway restriping
Post Date: 05/20/2026 Bid Date: 06/04/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, C12 - Earthwork & Paving Contractor: Pavement Preservation, Resurface, Slurry Seal, High Friction, Milling, Land Clearing, Trails/Path
#822897

Balfour Road Wastewater Rehabilitation Project, Brentwood, CA

The City requires civil engineering services (Services) for its Project. The Project involves replacing approximately 3,390 linear feet of existing 18-inch and 24inch Spirolite sanitary sewer main along Balfour Road between Fairview Avenue and Sweetgrass Drive

Post Date: 05/07/2026 Bid Date: 06/05/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, C34 - Pipeline Contractor: Water Mains, Sewer Lines, Septic Lines; CIPP Pipe liners, Pipe Inspection, Video & Robotic Cameras
#825235

RFP for Brentwood Boulevard Wastewater Rehabilitation Project, Brentwood, CA

The City requires civil engineering services (Services) for its Project. The Project involves replacing approximately 2,600 linear feet of existing sanitary sewer main of varying sizes along Brentwood Boulevard between Oak Street and Havenwood Avenue. The material of the sewer main is primarily clay, which was installed an estimated 68 years ago with no records of previous rehabilitation being performed. With an expected life span of 50-60 years for clay, the sewer main is due for rehabilitation and/or replacement. In addition, there are approximately 22 sanitary sewer manholes in need of rehabilitation as they are primarily brick. There is also a need to construct/install approximately six (6) new manholes to allow for better cleaning, maintenance, and operation

Post Date: 05/21/2026 Bid Date: 06/05/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, C34 - Pipeline Contractor: Water Mains, Sewer Lines, Septic Lines; CIPP Pipe liners, Pipe Inspection, Video & Robotic Cameras, Stormwater Drainage: Manholes & Valve Boxes, Ditches, Culverts, Shoulder Work, Grates, French Drains, Dewatering, Water Swales
#822610

2026 On-Call Trucking Services Contract(s) For Various Road and Flood Control Maintenance Work, Martinez, CA

General work description: A contract to provide trucking services consisting of trucks and operators to support road and flood control maintenance repair work, including transportation of debris, aggregate, hot mix asphalt, and rock, on an as-needed basis
Post Date: 05/06/2026 Bid Date: 06/09/2026 Trades: Trucking, Hauling: Dump Truck Services, Relocation of Goods (Including House Moving) & other Freight Services NIGP 962-86
#824302

Flood Control Zone 1 Marsh Creek Storm Damage Repair Project, Martinez, CA

Work Description: The work consists of repairing erosion at three sites along Marsh Creek in the Brentwood area. Work includes excavation, clearing and grubbing, embankment reconstruction, placement of soil-filled rock slope protection, temporary water diversion and dewatering, temporary traffic control, hydroseeding, placement of erosion control measures, and re-establishment of an existing drainage ditch.

Post Date: 05/16/2026 Bid Date: 06/09/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, Stormwater Drainage: Manholes & Valve Boxes, Ditches, Culverts, Shoulder Work, Grates, French Drains, Dewatering, Water Swales
#822790

RFP Security Guard Services, Contra Costa Co, CA

This RFP is to establish a contract with one or more vendors for the labor, materials, and equipment needed to provide Security Guard Services for HACCC Properties on an as-needed basis for the Housing Authority of the County of Contra Costa (HACCC). HACCC owns and manages multiple properties throughout the county.
Post Date: 05/06/2026 Bid Date: 06/10/2026 Trades: Security Guard, Officer, Doorman Personnel Services: Armed & Unarmed, School Crossing Guards & Armored Vehicle Pickup/Delivery
#823962

RFP Flooring Services, Contra Costa Co, CA

It is the intent of this RFP is to establish a term contract, with a vendor or multiple vendors for the Housing Authority of the County of Contra Costa for labor, materials and equipment necessary to provide Flooring Replacement Services for rental units on an as-needed basis.

Post Date: 05/13/2026 Bid Date: 06/23/2026 Trades: C15 - Floor Covering and Flooring Contractor, Including Carpet, Wood, Marble, Tile, Ceramic, Linoleum, Vinyl
#825017

Old River Pump Station Power System Improvements (2766), Concord, CA

Old River Pump Station Power System Improvements

Post Date: 05/20/2026 Bid Date: 06/23/2026 Trades: C42 - Sewer Pump System, Sewer Connection, Septic System Contractor: OnSite Sewage Facility (OSSF), C34 - Pipeline Contractor: Water Mains, Sewer Lines, Septic Lines; CIPP Pipe liners, Pipe Inspection, Video & Robotic Cameras, C10 - High Voltage Electrical Contractor (HVE): Electrician, Power Lines; Substation, Switchgear, Transmission/Power Lines
#825921

Deer Valley Road Traffic Safety Improvements, Martinez, CA

Work Description: The work will be done on 4 sites on Deer Valley Road. Work on site 1 at Deer Valley Road at Empire Mine Road generally consists of pavement widening, installation of a solar speed feedback sign system, roadside signs, placement of a concrete ditch lining, and placing thermoplastic striping. At site 2 located North of Wetzl Lane, work includes installation of a solar speed feedback sign system and installing roadside signs on existing posts. At site 3 located north of Briones Valley Road work includes installation of MGS, roadside signs, and a solar feedback sign system. At site 4 located South of Briones Valley Road will widen a portion of the shoulder on the east side of Deer Valley Road, and install 2 solar speed feedback sign systems and roadway signs.

Post Date: 05/26/2026 Bid Date: 06/23/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors
#825247

Engineering Design Services for Coral Drive Sidewalk Improvements, Orinda, CA

The City of Orinda is seeking a professional consultant team to provide engineering services to provide survey, design and construction documents for the City of Orinda Coral Drive sidewalk from Moraga Way to Ardith Drive

Post Date: 05/21/2026 Bid Date: 06/24/2026 Trades: *A&E Architecture & Engineering: Design Services, Consulting & Planning: Professional, EOR Services, Feasibility Study
#825932

Los Medanos Recovery Center, Pittsburg, CA

Scope of Work: Design-build services for a new behavioral health facility. Once completed, the center will feature a sobering center, crisis triage, withdrawal management, and outpatient services. Location: Pittsburg, CA (adjacent to the Pittsburg Health Center near Los Medanos College)
Post Date: 05/26/2026 Bid Date: 07/02/2026 Trades: *A&E Architecture & Engineering: Design Services, Consulting & Planning: Professional, EOR Services, Feasibility Study, Design/Build Contractor; Design/Bid/Build Entity (DBBE) or Design/Bid/Build (DBB), Class B - *General Building Contractor GBC: Building Construction, Enclosed Structures; Opportunities for Subcontractors
#826676

Sewer Maintenance Project, Concord, CA

Scope of Work: The work consists of mobilization; preparatory work, securing the work area for public safety, and site cleanup daily, clearing and grubbing, traffic control; storm water pollution control program; earthwork; potholing of existing utilities; open trench replacement of sanitary sewer mains and laterals; pipe bursting of sanitary sewer mains and laterals; sewer cleanout replacement; manhole rehabilitation; slurry seal; traffic striping and markings. The Project is located within the City of Concord, along Montgomery Avenue, Matheson Road, Armand Drive, Bon Homme Way, Solano Way, Iron Horse Trail, Regency Drive, and San Simeon Drive.

Post Date: 05/31/2026 Bid Date: 07/02/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, Pavement Marking, Traffic Striping, Raised Pavement Markers (RPMs) & Reflectors, Centerline Rumble Strips, Stormwater Drainage: Manholes & Valve Boxes, Ditches, Culverts, Shoulder Work, Grates, French Drains, Dewatering, Water Swales, C34 - Pipeline Contractor: Water Mains, Sewer Lines, Septic Lines; CIPP Pipe liners, Pipe Inspection, Video & Robotic Cameras
#827267

2026 On-Call Contract(s) for Various Road, Flood Control, and Airport Maintenance Work, Martinez, CA

General Work Description: The work consists of various road, flood control, and airport maintenance work to provide support as needed to Public Works Maintenance crews for various routine road, flood control, and airport maintenance repairs, such as, but not limited to, pavement repairs and replacement, crack seal, slurry seal, skin patching, asphalt concrete cold planing, pavement leveling, shoulder widening, hot mix asphalt paving, storm damage repair work, rock slope protection, slope stabilization, culvert repair work, and concrete structure repair work.

Post Date: 06/03/2026 Bid Date: 07/07/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, Highway, Roadways, Bridge, Railroad, Airport Construction, Maintenance & Repair: Horizontal Construction, Runway Friction Testing (RFT): Paving/Seal/Chip Testing & Analysis
#818259

2026 On-Call Habitat Restoration Services, Martinez, CA

The contractor will be responsible for completing various habitat restoration tasks that are required in different County locations. The work may include vegetation management, hand planting, hand seeding and hydro seeding, native plant identification and cutting, seeding and replacement, invasive plant treatment and undesirable plant removal (including herbicide application), placement of mulch, installation, maintenance and removal of temporary irrigation systems, watering of plants by hand and general site maintenance including remediation of plant pathogens in planting areas

Post Date: 04/08/2026 Bid Date: 05/05/2026 Trades: C27 - *Landscaping Contractor & Groundskeeping, Xeriscaping, Hardscaping, Weed Control Grubbing Sodding Lawn Mowing Mulching, C27 - Water Supply & Irrigation Contractor: Landscaping Water Sprinkler System, Pesticide & Herbicide Applications: Chemical Root Control or Mosquito Control (Adulticide, Larvicide)
#818434

Installation of Park Signage, Antioch, CA

The work shall generally consist of the fabrication and installation of signage within parks throughout the City of Antioch. Additional work includes mounting assemblies, connections, and foundations, excavations, lighting, and traffic control.

Post Date: 04/10/2026 Bid Date: 05/05/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, C45 - Signs & Signage Contractor: (Non-Electrical & Electrical) Digital & Video Displays, Tower Clocks, Billboards, Scoreboards, Wayfi
#817141

2025 & 2026 Street Rehabilitation Projects, Moraga, CA

The work to be performed is located within three residential neighborhoods and along one arterial street in the Town of Moraga. The project includes pavement restoration, storm drain open cut repairs, monument preservation, utility adjustments, concrete curb and gutter repairs, concrete sidewalk and pathway repairs, ADA curb ramp installations, cold planing/milling, partial depth recycling, and shoulder stabilization. Additional work includes hot mix asphalt overlay, temporary and permanent pavement striping, traffic control, tree removal, and all other related improvements along the project streets. The scope also includes any other work, items, or details not specifically listed above but required by applicable standards, specifications, or contract special provisions.
Post Date: 04/02/2026 Bid Date: 05/06/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors
#819753

Plumbing Services, Concord, CA

Plumbing Services

Post Date: 04/19/2026 Bid Date: 05/06/2026 Trades: C36 - Plumbing Contractor: Water Supply, Reverse Osmosis (RO), Water Heaters, Water Meters, Leak Detection, Flow & Backflow, Acoustic