This Subcontract opportunity from New Hampshire was posted on March 30, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Trenching and Excavation Services

Closed

State & Local

Submission Closed04/08/2026, 12:00:00 PM EDT

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

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

Bosco Constructors, Inc. is soliciting quotes for the Recharge Master Plan Update at Montclair Basin located in California. The project focuses on improvements for Basin 2 and Basin 3, requiring specialized services including mobilization, water control, bypass and dewatering, the installation of inlet and outlet structures, diversion piping, valves, fittings, riprap, grading, backfill, restoration, and general cleanup. This opportunity is specifically set aside for certified and qualified small businesses, including DBE, SBA, and MBDA subcontractors and suppliers, with eligibility extending to VOSB, SDVOSB, WOSB, and HUBZone certified firms. Interested parties must submit their responses by November 23, 2026. Primary coordination for this solicitation is handled by Rafael Fonseca Jr.

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 and hauling services. 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, via the provided company email or phone number.

Granite Construction Company

POSTED

DEADLINE

ADVANCE NOTICE: Rail Modernization Program

Solicitation # WMATA-0000010871

The Washington Metropolitan Area Transit Authority is issuing 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, indicating a focus on significant infrastructure improvements for the rail system. The notice was posted on November 14, 2026, and the deadline for responses is set for September 30, 2027. Interested parties can find further details and manage their bids through the official WMATA supplier portal.

Washington Metropolitan Area Transit Authority

POSTED

DEADLINE

RFQ _ Construction Services-Technical Security Upgrade (TSU)

Solicitation # 19WZ6027Q0001

The US Embassy Mbabane is soliciting quotations for a Technical Security Upgrade (TSU) construction project at the embassy compound in Ezulwini, Eswatini. This firm fixed price contract involves various construction activities, including mobilization, soft and concrete excavation, installation of concrete and soft soil channels, PVC pipe laying, and the construction of manholes and handholes. All work must adhere to the DS/FSE/PME design package, 2018 International Fire Code, 2020 National Electrical Code, 2022 OBO Design Standards, and 2010 ADA Standards for Accessible Design. The contract will be awarded to the lowest priced, technically acceptable, and responsible offeror. Technical acceptability is based on the contractor's ability to meet the performance period, their record of integrity, and the possession of necessary equipment and skills. Key requirements include providing an English-speaking supervisor as key personnel and ensuring all staff undergo security clearance via the Regional Security Officer. Contractors must submit a detailed project schedule as a bar chart and provide a history of similar work performed over the last three years. Performance must commence within 10 calendar days of the Notice to Proceed, with a detailed construction schedule due within 10 days of award. Invoices are to be submitted monthly to [email hidden], with a modified 30-day payment period. The government will determine acceptance through the Contracting Officer and the Regional Security Officer, who serves as the Contracting Officer's Representative. Final acceptance requires a five-day advance written notice for inspection and the issuance of a Certificate of Substantial Completion.

POSTED

DEADLINE

Civil Construction and Earthworks

Oil & Gas Development Company Limited (OGDCL)

POSTED

DEADLINE

Multiple Award Construction Subcontract (same as above)The NASA Jet Propulsion Laboratory is forecasting a Multiple Award Construction Subcontract for work to be performed in Pasadena, California. This competitive set opportunity is specifically set aside for small businesses under NAICS code 237990, with a period of performance extending through September 30, 2025, and the inclusion of available options. Interested parties can find further information regarding this small business opportunity through the official JPL acquisition portal. The contract focuses on construction services to support agency operations at the California facility.

NASA Jet Propulsion Laboratory

POSTED

DEADLINE

FY 2025 La Joya Parks & Recreational Improvements Project

Solicitation # 5025-40-0306-5000-0000-00-UCP-LS

The FY 2025 La Joya Parks and Recreational Improvements Project (Project No: TX 2621) is a unit price contract managed by the Hidalgo Urban County Program. The scope of work involves comprehensive construction and facility improvements, including the removal of existing chain link fencing and the installation of new black vinyl-coated fencing, double and single gates, parking lot striping, concrete curb ramps, and the installation of aluminum and project signage. All work must adhere to strict quality standards, including ASTM specifications for concrete, aggregates, and bituminous materials, and must comply with ADA standards and OSHA safety regulations for trenching and shoring. This project is funded by the U.S. Department of Housing and Urban Development Community Development Block Grant Program, requiring strict adherence to Texas State Prevailing Wage Requirements and Davis-Bacon Federal Wage Rates, including the submission of certified payroll. Contractors must maintain an active status on SAM.gov with a Unique Entity Identification (UEI) number and provide a Certificate Regarding Debarment. Additionally, the Build America Buy America Act applies to contracts exceeding $300,000, necessitating a preference for domestic materials. Bids must be submitted by December 4, 2026, consisting of one original typed document and two USBs in PDF, Word, or Excel format. Submissions must include a 5% bid security, a completed Certificate of Interested Parties Form 1295, and the Appendix N Build America Buy America Certification. Award decisions will be based on a combination of price, performance, and compliance, utilizing a preliminary evaluation and a Best and Final Offer process rather than a price-only selection.

POSTED

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Solicitation # 26-04-PW

Contract 26-04-PW is a solicitation issued by the Madera County Public Works Department for the construction of a leachate surface impoundment facility, the expansion of the Cell 3 liner, and various ancillary site improvements at the Fairmead Landfill in California. The project scope includes grading, placing aggregated base, installing an underground piping system with 12-inch dual wall HDPE pipe, and constructing rip rap swales. All work must adhere to the 2024 Caltrans Standard Specifications and Standard Plans, as well as the 2024 Edition of the Standard Specifications for Public Works Construction. The revised engineer's estimate for the project is $7,917,308.70, and the contract will be awarded to the responsive, responsible, and lowest price bidder. Bidders must have attended the mandatory pre-bid meeting on October 27, 2026, and must possess a Class A license or a combination of Class C licenses. Qualification requirements include the ability to self-perform at least 30% of the base bid and a proven track record of completing four projects of similar size and scope within the last seven years. Submissions must be made via BidExpress by November 18, 2026, and must include a bidder's security of at least 10% of the bid amount. Required documentation includes a subcontractor list, professional references, an Iran Contracting Act Certification, and various affidavits. The successful contractor will be required to provide performance and payment bonds totaling 100% of the contract price and comply with California prevailing wage laws and non-discrimination regulations.

County of Madera - Public Works Department

POSTED

DEADLINE

Open Cut Sewer RepairPM Construction & Rehab, LLC is seeking a subcontractor for an open cut sewer repair project focused on wastewater collection system rehabilitation in Mangham, Louisiana. The scope of work involves excavating soil to access damaged wastewater pipes, removing failed sections, installing new piping, and completing the process with backfilling and compaction. The selected contractor will be responsible for utilizing excavators, trench shoring, shields, and compaction equipment to ensure all repaired sewer line sections are restored to grade. This subcontract opportunity is open for responses until November 27, 2026. While open to qualified bidders, there is a preference for contractors with Disadvantaged Business Enterprise certification. The project falls under NAICS code 237990 and requires the delivery of fully restored infrastructure according to project specifications.

PM Construction & Rehab, LLC

POSTED

DEADLINE

Solicitation # CP25014

The Lake Charles Harbor and Terminal District is soliciting bids for Project CP25014, which involves heavy construction port improvements for the Industrial Park East Rail Extension and Trans-loading Yard in Calcasieu Parish, Louisiana. The scope of work includes the design and construction of rail infrastructure, specifically proposed tracks TRK A and TRK B, and the installation of precast concrete crossing panels to replace wood ties. Additional requirements include clearing and grubbing, excavation, culvert bedding, and the installation of barbed wire fencing and double swinging driveway gates. The engineer's estimate for the base bid is $5,856,000, and awards will be based on the lowest price derived from the summation of quantities and unit bid prices. Bids are due by November 19, 2026, and must be submitted using the Louisiana Uniform Public Work Bid forms. The successful contractor will be required to provide performance and payment bonds from an A-rated surety and adhere to strict quality assurance standards, including DOTD specifications for embankment density and moisture content. The contract is based on calendar days, with stipulated damages of $1,000 per day for failure to meet the completion deadline and an additional $1,000 per day for uncompleted punch list items after 45 days. Financial terms include a retainage of 5% for contracts exceeding $500,000. Compliance with the Clean Air Act and Federal Water Pollution Control Act is required for subcontracts exceeding $150,000 financed via FEMA.

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Storm Drainage and Culvert ImprovementsThis subcontract focuses on storm drainage enhancements and culvert work for roadway projects within the City of Smyrna, Georgia. The selected contractor will work under prime contractors to deliver an improved storm drainage system and complete two specific culvert improvement projects. The opportunity is categorized under NAICS code 237990 and was posted on November 13, 2026. Interested parties must submit their responses by the deadline of March 5, 2027.

POSTED

DEADLINE

2026008-RFP3819 Riverwood Park

Solicitation # 2026008-RFP3819

The Columbia County Board of Commissioners is soliciting proposals for the construction of Riverwood Park under solicitation number 2026008-RFP3819. The General Contractor is responsible for providing all labor, equipment, materials, and supervision to complete the project according to drawings and specifications provided by the architect, Goodwyn Mills Cawood. The comprehensive scope of work includes site demolition, clearing, and grading, as well as the installation of play structure assemblies, poured-in-place safety surfacing, splash pad equipment and plumbing, mountain biking trails, concrete paths, parking lots, site lighting, site furnishings, and landscaping improvements. To be eligible for award, bidders must possess a State of Georgia General Contractor's License and a Columbia County business license. Proposals must be submitted electronically via the Bonfire portal by December 10, 2026, and must include a bid bond drawn in favor of Columbia County, Georgia, for at least five percent of the lump sum bid. Letters of credit are not accepted. The successful contractor will be required to provide Performance and Payment Bonds within ten days of the contract award. All inquiries and proposals are managed through the Columbia County Procurement Department, with Glenn O'Steen serving as the Procurement Manager.

Columbia County Board of Commissioners

POSTED

2 days ago

DEADLINE

in 25 days

AI Contract Overview

The New Hampshire Recreation, Arts, and Parks agency is seeking a subcontractor for trenching and excavation services under NAICS code 237990. The scope of work involves performing trenching for water line installation at specified depths, with a strict requirement for safe trench management. To ensure site safety, all trenches must be properly backfilled or protected on a daily basis. Interested parties must submit their responses by the deadline of April 8, 2026, at 4:00 PM. This opportunity was officially posted on March 30, 2026, and further details can be accessed through the provided procurement portal.