This Subcontract opportunity from California was posted on November 5, 2025. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Riprap Placement & Erosion Control Installation

Closed

State & Local

Submission Closed12/16/2025, 04:00:00 PM PST

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

Active Opportunities Like This One

NAICS: 237990

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ADVANCE NOTICE: Rail Modernization Program

Solicitation # WMATA-0000010871

The Washington Metropolitan Area Transit Authority has issued an advance notice for the Rail Modernization Program under solicitation number WMATA-0000010871. This solicitation is categorized under NAICS code 237990, which pertains to other heavy and civil engineering construction. Interested parties have until September 30, 2027, to submit their responses. Further details and bidding information can be accessed through the official WMATA supplier portal.

Washington Metropolitan Area Transit Authority

POSTED

DEADLINE

Request for Quote for The Recharge Master Plan Update at Montclair Basin

Solicitation # request-quote-recharge-master-plan-update-montclair-basin

Bosco Constructors, Inc.

POSTED

DEADLINE

Imperial Irrigation District – East Highline Reservoir

Solicitation # imperial-irrigation-district-east-highline-reservoir

Granite Construction Company is seeking quotes for the Imperial Irrigation District East Highline Reservoir project located in California. This solicitation is specifically open to qualified socioeconomic firms, including certified Small Business, Women-Owned Small Business, Minority Business, and Disadvantaged Business Enterprises. The scope of work is extensive, covering a wide array of materials and services such as crushed stone, sand, gravel, concrete, reinforcing steel, and lumber, as well as specialized labor for clearing, grading, excavation, erosion control, and electrical and signal installation. Additional requirements include professional services for environmental consulting, materials testing, and land surveying, along with a comprehensive need for various trucking services including bottom dump, flat bed, and water trucks. Interested parties must submit their responses by December 2, 2026. All inquiries and submissions should be directed to the primary point of contact, Andrew Burk.

Granite Construction Company

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DEADLINE

Saint Louis County in Minnesota is soliciting bids for contract MP 0000-816395R, which encompasses a wide range of infrastructure and site development work. The scope of the project includes grading, storm sewer installation, electrical work, gate installation, concrete placement, bituminous surfacing, and pavement markings. This solicitation falls under NAICS code 237990 and is being managed by a state and local government entity. Interested parties must submit their responses by the deadline of December 3, 2026, at 4:00 PM. The solicitation was officially posted on November 10, 2026, and all performance of the work will take place within the state of Minnesota. Detailed information and submission guidelines can be accessed through the Bid Express portal.

POSTED

DEADLINE

RFB No. 27-0017 Carver Lake Park - Phase 1

Solicitation # 27-0017

The Columbus Consolidated Government is soliciting bids for the Carver Lake Park Phase 1 project in Columbus, Georgia. The scope of work involves comprehensive site improvements, including demolition, clearing, grubbing, earthwork, and grading. Key deliverables include the construction of access drives, parking areas with permeable pavers, concrete sidewalks, curb and gutter, and a 10-foot-wide multi-use trail. The project also encompasses the development of playground and pavilion areas, improvements to the existing splash pad, fencing, site signage, landscaping, and associated storm drainage and utility improvements. The contract will be awarded to the responsive and responsible bidder submitting the lowest base bid. Qualified bidders must be licensed contractors in the State of Georgia, maintain a permanent place of business, and demonstrate sufficient financial resources and construction experience. The project requires substantial completion within 550 consecutive calendar days, with final payment readiness by 580 days. Successful bidders must provide performance and payment bonds totaling 100 percent of the contract amount. The project mandates strict adherence to various federal and state regulations, including the Davis-Bacon Act, the Copeland Act, and the Anti-Kickback Act, while emphasizing a preference for qualified local labor and businesses.

Columbus Consolidated Government

POSTED

DEADLINE

Cheshire Park Adaptive Turf Field

Solicitation # 2627-03

The Town of Cheshire is soliciting competitive bids for the Cheshire Park Adaptive Turf Field project (ITB #2627-03) in Connecticut. This project utilizes the AIA Document A101-2017 Standard Agreement and requires a lump sum base bid, with optional alternates for field lighting, a scoreboard, dugout shelters, a batting cage, and a turf groomer. Sealed bids must be submitted in opaque envelopes—including one original, one copy, and one electronic copy on a USB drive—to the Department of Public Works and Engineering by 11:00 AM on December 1, 2026. Bids must be signed by a principal officer or owner and include a bid bond or certified check for 5% of the bid amount for contracts exceeding $50,000. The scope of work involves comprehensive site development, including grading, utilities, and sediment and erosion controls, supported by geotechnical and topsoil analysis. Technical requirements include a 25-year warranty on light levels and strict adherence to IESNA RP-6-22 for illumination measurements. Contractors must comply with prevailing wage laws, the Americans with Disabilities Act, and state set-aside requirements for minority and women-owned businesses. Quality control is rigorous, requiring specific handling and storage of coated reinforcing steel and mandatory field density testing. Project administration is overseen by the Town Engineer and the Director of Public Works, with payments processed using EJCDC Form No. C-620.

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Site Work and UtilitiesThis subcontract for Site Work and Utilities involves performing essential earthwork and utility installation for the Jackson County Water and Sewerage Authority in Georgia. The project focuses on a Water Reclamation Facility expansion to 4 MGD, requiring the subcontractor to execute excavation, grading, bedding, and the installation of both influent and effluent lines to deliver a fully graded site and completed underground utility infrastructure. The opportunity is categorized under NAICS code 237990 and was posted on November 10, 2026. Interested parties must submit their responses by the deadline of December 17, 2026, at 4:00 PM.

Jackson County Water and Sewerage Authority

POSTED

DEADLINE

Site Preparation & Civil EngineeringThis subcontract for Site Preparation and Civil Engineering supports facility projects for the South Western Ambulance Service NHS Foundation Trust. The scope of work involves performing essential earthworks and foundational civil engineering for prime contractors, specifically focusing on land clearing, excavation, grading, and the installation of drainage systems. The ultimate objective is to deliver a fully serviced and graded site with completed foundations prepared for vertical construction. The opportunity was posted on November 10, 2026, with a response deadline of December 7, 2026. Classified under NAICS code 237990, this contract is designated as a subcontract to ensure the necessary infrastructure is in place to support the trust's facility developments.

South Western Ambulance Service Nhs Foundation Trust

POSTED

DEADLINE

Solicitation # 26-0075-MA

The City of Clearwater is soliciting bids for the Seminole St. Boat Ramp Restoration project in Clearwater, Florida. The scope of work involves the comprehensive repair and restoration of an existing boat ramp facility that has suffered typical degradation. Key activities include the removal of the existing structure, dredging and grading of native soils, placement of gravel fill, and the final design and installation of new concrete boat ramps. The finished facility must feature four launching bays providing eight total ramps, with two outer ramps measuring approximately 56 feet and six interior ramps measuring approximately 46 feet from mean high water to the toe. The completed ramps must be capable of supporting vessels exceeding 35 feet with combined weights over 10 tons. Additional requirements include the temporary relocation and preservation of floating docks and gangways to ensure ADA-compliant travel. The project is categorized as marine construction with an estimated value of 750,000 dollars. Bidders must provide a bid security equal to 10 percent of their maximum bid price and furnish payment and performance bonds within ten days of a contract award. The period of performance is 180 calendar days from the Notice to Proceed. Contractors must choose between two construction sequencing options: Alternate A, which utilizes a phased closure to minimize public disruption, or Alternate B, which allows for a maximum 45-day simultaneous closure of all ramps. Technical specifications require concrete with a compressive strength of 4,000 PSI and a minimum design load of 300 PSF. Environmental compliance is mandatory, requiring the implementation of Stormwater Pollution Prevention Plans and the use of turbidity curtains.

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Stream Bed and Bank ArmoringThis subcontract for Stream Bed and Bank Armoring involves the installation of structural grade control and bank protection for prime contractors working on stream restoration projects within Henrico County, Virginia. The scope of work includes the installation of reinforced bed material, in-stream rock sills, imbricated rock wing walls, step pools, and logs or brush toe stabilization. To ensure structural stability, the contractor must utilize native logs and specific rock sizes to deliver completed armored banks and structural stream beds. The opportunity is categorized under NAICS code 237990 and was posted on November 10, 2026. Interested parties must submit their responses by the deadline of December 16, 2026.

POSTED

DEADLINE

Three Lakes Park Stream Restoration

Solicitation # 26-3028-11EAR

The Three Lakes Park Stream Restoration project, solicitation number 26-3028-11EAR, is an invitation for bids to restore approximately 1,520 linear feet of an unnamed tributary to Upham Brook in Henrico County, Virginia. The project utilizes a Priority 2 restoration approach, which involves constructing a new bankfull channel within a newly excavated lower floodplain bench, designed as a low sinuosity C3/C3b type channel. Key technical requirements include the installation of wood and rock structures for grade control, the planting of native vegetation to stabilize banks, and adherence to the 2024 General VPDES Permit for Discharges of Stormwater from Construction Activities. The contractor must possess a Virginia Contractor’s License Class A and be a registered contractor in the Commonwealth of Virginia. The contract is a unit price agreement with a performance period of 365 calendar days from the written Notice to Proceed. Bids must be submitted via the ProcureWare portal by 3:00 PM on December 16, 2026, and must include a bid bond, cashier's check, or certified check for 5% of the Total Unit Price Base Bid. Award will be granted to the lowest responsive and responsible bidder. Required documentation includes a bid signature sheet, business category classification, and Virginia State Corporation Commission registration. A non-mandatory pre-bid meeting and site visit are scheduled for December 2, 2026, at the Purchasing Division Office.

POSTED

DEADLINE

CP1275129-Linden Residence Hall-North Retaining Wall-Repairs

Solicitation # 49576

Iowa State University is soliciting bids for project CP1275129, which focuses on the repair and replacement of the north retaining wall and stairs at Linden Residence Hall. The comprehensive scope of work involves masonry and footing replacement for the retaining wall, the installation of new concrete stairs and sidewalks, and the addition of a patio. Further improvements include site lighting, landscaping, and enhanced site drainage, along with the creation of an accessible pedestrian and equipment access route to the plaza level. This solicitation, identified by number 49576, falls under NAICS code 237990. The project is located in Iowa and was posted on November 10, 2026, with a response deadline of November 12, 2026. Interested parties can find further details and submission guidelines through the Bid Express portal.

Iowa State University

POSTED

about 8 hours ago

DEADLINE

in 2 days

AI Contract Overview

This subcontract opportunity, issued by San Diego CSU in California, involves the supply and installation of riprap for riverbank scour protection and erosion control. The project is designed as part of broader environmental mitigation efforts to stabilize riverbanks and prevent soil loss. Interested parties must submit their responses by the deadline of December 17, 2025. The project is categorized under NAICS code 237990, and further details regarding the solicitation can be accessed through the Cal eProcure portal.