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Browse all Contra Costa County, CA

#820284

On-Call Architectural-Engineering Services & Environmental-Planning Services, Concord, CA

Project Description: On-Call Architectural/Engineering Services & Environmental/Planning Services for the County's Airports Division that consists of Buchan Field Airport (CCR) adjacent to Concord, California, and Bryon Airport (C83) in Bryon, California.

Post Date: 04/22/2026 Bid Date: 05/27/2026 Trades: *A&E Architecture & Engineering: Design Services, Consulting & Planning: Professional, EOR Services, Feasibility Study, Environmental Consulting & Testing, Water & Air Quality & Ecological Stewardship, Compliance & Services
Bid Docs
#824299

Betty Reid Soskin Buildings 100 & 300 Tenant Improvements, El Sobrante, CA

Project Description: The project consists of providing hazardous material abatement and wall and wall finish demolition, including complete wall removal in room 100; wall paneling and adhesive; gypboard and texture; markerboards, chalkboards, and tack boards; adhesive; casework varnish and stain finish; casework hardware; surface-mounted data and electrical raceways and devices; televisions and associated parts; and air filters. Provide new wall paneling trim; patch and repair holes in interior gypboard and plaster walls; refinish walls to match existing; stain and refinish casework; paint walls; paint ceilings; paint doors and frames; and paint all room trim. Install owner-furnished markerboards and tack boards. Provide revisions to surface-mount data, electrical raceways, and devices.
Post Date: 05/16/2026 Bid Date: 05/27/2026 Trades: Class B - *General Building Contractor GBC: Building Construction, Enclosed Structures; Opportunities for Subcontractors
Bid Docs
#822492

Street Sweeping Services, San Ramon, CA

518 curb miles of City-owned and maintained streets, intersections, medians, parking lots, and protected bicycle lanes. Work may occur at a variety of locations throughout the City, including residential neighborhoods, commercial corridors, and other City-maintained paved surfaces

Post Date: 05/05/2026 Bid Date: 05/28/2026 Trades: Litter & Trash Pickup & Road & Sidewalk Sweeping: Branch & Leaf Collection & Disposal: On-Call & Regular Services, Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors
Bid Notice
#821458

2025/2026 Annual Pavement Rehabilitation Project, Orinda, CA

Scope of Work: The work to be performed consists of pavement rehabilitation of various streets within the City of Orinda. Such work includes mobilization, demobilization, temporary traffic control, installation of water pollution control measures, removal & replacement of concrete sidewalk, construction of concrete curb ramps, base failure repair (dig out), milling/cold planing, hot mix asphalt (HMA) overlay, micro-surfacing, cape seal, adjustment of utility manhole frames and covers, perpetuating survey monuments, adjustment of valve boxes, installation of thermoplastic traffic stripes, thermoplastic pavement markings, blue reflectors, and crosswalks, and all other work as shown on the plans and as described in the Caltrans Standard Specifications and these Special Provisions to provide a complete project. Contractor shall conduct his/her operations in a manner which will result in the least possible obstruction and inconvenience to the affected property owners. This requirement includes dust, noise, cleanup, and protection of owners property.
Post Date: 04/29/2026 Bid Date: 06/02/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors
Bid Docs
#821649

2025/26 Annual Pavement Rehabilitation Project Project, Orinda, CA

The work to be performed generally consists of pavement rehabilitation of various streets within the City of Orinda. Such work includes, but is not limited to; mobilization, demobilization, temporary traffic control, installation of water pollution control measures, removal & replacement of concrete sidewalk, construction of concrete curb ramps, base failure repair (digout), milling/cold planing, hot mix asphalt (HMA) overlay, microsurfacing, cape seal, adjustment of utility manhole frames and covers, perpetuating survey monuments, adjustment of valve boxes, installation of thermoplastic traffic stripes, thermoplastic pavement markings, blue reflectors, and crosswalks, and all other work as shown on the plans and as described in the Caltrans Standard Specifications and these Special Provisions to provide a complete project

Post Date: 04/29/2026 Bid Date: 06/02/2026 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, C31 - Construction Zone Traffic Control Contractor, Flashing Beacons
Bid Notice
#825245

2025-26 Annual Pavement Rehabilitation, Orinda, CA

The work to be performed generally consists of pavement rehabilitation of various streets within the City of Orinda. Such work includes, but is not limited to; mobilization, demobilization, temporary traffic control, installation of water pollution control measures, removal & replacement of concrete sidewalk, construction of concrete curb ramps, base failure repair (digout), milling/cold planing, hot mix asphalt (HMA) overlay, microsurfacing, cape seal, adjustment of utility manhole frames and covers, perpetuating survey monuments, adjustment of valve boxes, installation of thermoplastic traffic stripes, thermoplastic pavement markings, blue reflectors, and crosswalks, and all other work as shown on the plans and as described in the Caltrans Standard Specifications and these Special Provisions to provide a complete project

Post Date: 05/21/2026 Bid Date: 06/02/2026 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, C8 - Concrete Contractor: Pavement, Driveways, Sidewalks, Curbs, Gutters, Flatwork, ADA Ramps Pedestrian Improvements, CIP Concrete, Pavement Marking, Traffic Striping, Raised Pavement Markers (RPMs) & Reflectors, Centerline Rumble Strips
Bid Notice
#813004

NEW BID DATE: 04-2Y2204 Clean & Paint Str Steel Br., Salvage Traveler, Fender and Pier Repair, Contra Costa & Marin Counties, CA

General work description: Clean & paint Str steel Br., salvage traveler, fender and pier repair.

Post Date: 03/09/2026 Bid Date: 06/03/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, C33 - Industrial Painting & Coating Contractor: Tanks, Bridges, Corrosion Protection
Bid Docs
#823827

Betty Reid Soskin Site Improvements, Richmond, CA

The project involves clearing, grubbing, and providing playground bark at the new kindergarten playground area. Provide approximately 1,200 LF of 6ft high chain-link fence and gates. Provide new playground markings at the existing asphalt playground

Post Date: 05/13/2026 Bid Date: 06/03/2026 Trades: Class A - *General Engineering Contractor GEC: Heavy & Civil Engineering Construction, Infrastructure; Opportunities for Subcontractors, C27 - *Landscaping Contractor & Groundskeeping, Xeriscaping, Hardscaping, Weed Control Grubbing Sodding Lawn Mowing Mulching, C13 - Fencing Contractor: Heavy Fences, Security Gates, Ornamental Iron, Tide Gates, Pavement Marking, Traffic Striping, Raised Pavement Markers (RPMs) & Reflectors, Centerline Rumble Strips, D34 - Prefabricated Buildings, Mobile Homes, Playgrounds, Trailers, Modular Units, Offices, Classrooms, Portable Toilets
Bid Notice