This Government Contract opportunity from Department Of The Interior was posted on April 28, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Heavy Civil Construction – Earthwork and Grading

Closed

Federal

Submission Closed05/14/2026, 11:00:00 PM UTC

Contract Overview

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

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NAICS: 237300

SLED

Trail Grading and Culvert RepairThe contract involves performing minor grading on the Arastradero Trail to restore proper function of culverts and minimize sedimentation entering the adjacent creek. Work includes repairs to the drainage system and implementation of erosion control measures to ensure long-term stability of the trail and surrounding environment. The project is specifically targeted at improving water flow and reducing environmental impact in a sensitive watershed area. This subcontract is issued under the NAICS code 237300 for Heavy and Civil Engineering Construction by the City of Palo Alto, with performance required in Palo Alto, California, 94303. The contract was posted on July 20, 2026, and is part of a broader effort to maintain infrastructure integrity and protect local waterways through targeted, environmentally conscious maintenance. No set-aside provisions are specified, and the work is intended to be completed with attention to ecological preservation and compliance with local regulatory standards.

POSTED

DEADLINE

Civil Site Work and GradingThe contract entails comprehensive civil site work for a 38-acre residential development in Santa Clara, California, focusing on earthwork, grading, drainage, and erosion control measures to prepare the site for residential construction. The work is governed under NAICS code 237300, which classifies it as heavy and civil engineering construction, and it is structured as a subcontract under the jurisdiction of the City of Santa Clara. The project's place of performance is firmly located within the 95054 zip code, ensuring all activities align with local infrastructure and environmental standards. Although the solicitation number and point of contact are not provided, the contract was posted on July 13, 2026, indicating the timeframe for bidding or award is imminent. The scope requires strict adherence to regulatory requirements for land disturbance and stormwater management to mitigate environmental impact during and after construction, with all work tied to the city’s planning and development objectives as referenced through the provided project link.

POSTED

DEADLINE

Upland and Habitat EarthworkThe contract involves the excavation and grading of upland areas amounting to 150,000 cubic yards with a focus on shaping native habitats for marsh, bench, and riparian zones to support ecological restoration. The work is part of a broader waterfront restoration initiative managed by the Port of Seattle under the Waterfront Project Management office, with the contract classified as a subcontract and aligned with NAICS code 237300 for heavy and civil engineering construction. The project scope requires precise earthmoving techniques to recreate natural topography while ensuring compliance with environmental standards for sensitive coastal ecosystems. The solicitation was posted on July 1, 2026, and detailed performance criteria are available via the Port of Seattle’s official portal.

Waterfront Project Management

POSTED

DEADLINE

Grading and EarthworkThe contract entails site grading work including excavation, fill placement, and slope stabilization utilizing heavy equipment, with all imported fill material required to comply with DTSC Clean Fill standards to ensure environmental safety and regulatory compliance. The scope of work focuses on earthmoving activities essential for preparing the site for future development, emphasizing proper land shaping and erosion control through engineered fill and stabilization techniques. This subcontract is associated with the City of San Mateo in California, with performance occurring in the 94402 ZIP code area. The project falls under NAICS code 237300, which classifies it as heavy and civil engineering construction, specifically related to land development and infrastructure earthwork. The contract was posted on June 12, 2026, and is accessible through the California Environmental Quality Act network, indicating it involves public infrastructure and environmental review obligations.

POSTED

DEADLINE

Pond Berm Stabilization and Rock ArmoringThe contract titled Pond Berm Stabilization and Rock Armoring involves reinforcing the berms surrounding a pond through strategic rock placement and grading to mitigate erosion and ensure long-term structural stability following sediment removal activities. The work is aimed at preserving the integrity of the pond’s embankments by installing durable rock armor that resists water flow and prevents soil degradation, with grading tailored to promote proper drainage and reduce future sediment buildup. This effort is critical for maintaining ecological balance and structural safety in the area post-sediment clearance. The contract is classified as a subcontract under NAICS code 237300, which corresponds to water and wastewater construction, and is managed by the Fish and Wildlife, Region 3 - Bay Delta office in California. It was posted on June 5, 2026, and the performance location is tied to the agency’s operational area within the Bay Delta region, though specific city or zip details are not provided. The project is part of broader environmental maintenance initiatives by the agency to safeguard aquatic habitats and associated landforms, with all work requiring compliance with regional environmental standards and construction best practices for erosion control.

Fish and Wildlife, Region 3 - Bay Delta, Fairfield

POSTED

DEADLINE

Grading and Earthwork ContractingThe contract entails comprehensive site grading, cut and fill operations, and erosion control measures for a four-phase residential development in Shafter, California, with a zip code of 93263. The work is categorized under NAICS code 237300, indicating it is an earthwork and site preparation subcontract, and is being managed by the City of Shafter. The project is scheduled to begin shortly after the posting date of June 3, 2026, and requires precise execution to ensure proper land preparation, earthmoving accuracy, and environmental compliance throughout each development phase. All work must be completed at the designated place of performance within Shafter, with no alternative locations permitted. The subcontract is part of a larger municipal initiative to support residential growth and infrastructure development, with a strong emphasis on maintaining erosion control standards to mitigate soil displacement and runoff impacts. While the specific contracting entity or point of contact is not identified, the project is accessible via a public link associated with California’s environmental review system, suggesting regulatory oversight and alignment with state environmental guidelines. Performance is expected to meet standard industry and municipal requirements for earthwork, with no set-aside provisions specified, meaning the subcontract is open to all qualified bidders without preference based on business size or ownership type.

POSTED

DEADLINE

Sand Dredging and Disposal ServicesThe contract involves dredging and transporting approximately 850,000 cubic yards of sand from the harbor channel, utilizing dredges and scows to move the material to designated disposal sites. The work is classified under NAICS code 237300 and is structured as a subcontract under the Department of Defense, specifically managed by W2SD Endist New England. The primary place of performance is in New Haven, though the exact state and postal details are not specified. The solicitation was posted on April 30, 2026, and while no set-aside type is indicated, the project is intended for specialized marine construction and dredging services. All work must comply with environmental and operational standards applicable to harbor dredging activities, and the contractor is responsible for the safe and efficient execution of material removal and disposal.

W2SD Endist New England

POSTED

DEADLINE

Optional Dredging – Dredge Area 14This contract involves the optional dredging of up to 16,700 cubic yards in Dredge Area 14. The work requires the use of appropriate dredging equipment and access to authorized disposal sites for the dredged material. The contract is issued as a subcontract by the Department of Defense, specifically under the "W072 Endist Detroit" agency. It falls under the NAICS code 237300, which covers heavy and civil engineering construction services. The contract was posted on March 25, 2026, and although details such as solicitation number, specific location, and point of contact are not provided, the scope emphasizes environmental and operational capabilities related to sediment removal in designated areas. The subcontract likely supports broader defense infrastructure maintenance or environmental management projects requiring specialized dredging efforts.

POSTED

DEADLINE

Optional Dredging – Dredge Area 3 (Option 2)The contract involves a second optional phase of dredging in a specified area known as Dredge Area 3, with a maximum volume of up to 25,600 cubic yards, contingent upon the exercise of this option. This work falls under the subcontract category and is associated with NAICS code 237300, which pertains to heavy and civil engineering construction. The contract is managed by the Department of Defense, specifically the W072 Endist Detroit agency. Posted on March 25, 2026, the contract focuses on environmental and infrastructure maintenance through dredging operations. Although specific location details and points of contact are not provided, this subcontract represents a continuation or extension of previous dredging activities in the designated area. The successful fulfillment of the contract will likely involve specialized excavation and material removal to maintain or improve navigational or operational conditions within the project site.

POSTED

DEADLINE

Optional Dredging – Dredge Area 3 (Option 1)This contract involves an optional dredging project for Dredge Area 3, allowing for the removal of up to 10,600 additional cubic yards of material if the option is exercised. The scope of work will follow the same methods and procedures used in the initial base dredging effort, ensuring consistency in operations. The contract falls under subcontracting within the NAICS code 237300, which pertains to heavy and civil engineering construction. Issued by the Department of Defense office W072 Endist Detroit, the contract was posted on March 25, 2026. While specific details such as the solicitation number, place of performance, and contact information are not provided, the contract's focus is clearly on extending dredging activities in a designated area to support ongoing or future project requirements. The availability of the optional work allows for flexibility to address additional dredging needs without initiating a separate contract.

POSTED

DEADLINE

Mechanical Dredging – Dredge Area 17The contract involves the mechanical dredging of 7,400 cubic yards of material from Dredge Area 17, a task expected to be carried out under challenging conditions that may include the presence of rock or limited site accessibility. This subcontract is associated with the Department of Defense, specifically the W072 Endist Detroit office, and falls under the NAICS code 237300, which pertains to heavy and civil engineering construction activities. The scope of work requires specialized equipment and expertise to handle potential obstacles in the dredging area, ensuring the removal of sediment or debris to meet operational or environmental requirements. While specific location details and points of contact are not provided, the contract emphasizes the complexity of the undertaking, highlighting the need for contractors capable of managing difficult site conditions efficiently and safely.

POSTED

DEADLINE

Mechanical Dredging – Dredge Area 11The contract involves the mechanical dredging and removal of approximately 17,800 cubic yards of material from Dredge Area 11. This operation requires specialized deep dredging equipment and precise depth control to ensure accurate excavation. The scope highlights the need for careful handling to meet the technical demands of the site. Issued by the Department of Defense under the W072 Endist Detroit office, the subcontract falls within the NAICS code 237300, which covers heavy and civil engineering construction. While specific location details and points of contact are not provided, the contract was posted on March 25, 2026, and is accessible through the federal contracting portal, indicating that it is a formal procurement opportunity targeting specialized dredging services.

W072 Endist Detroit

POSTED

6 months ago

DEADLINE

N/A

AI Contract Overview

The contract involves heavy civil construction work focused on site preparation, excavation, backfilling, and precision grading using heavy machinery including motor graders, excavators, and bulldozers. This work is specifically for the repair of vessel barrier gates at Hoover Dam, requiring accurate earthwork and grading to meet structural and operational standards. The effort demands specialized equipment and skilled personnel to handle the technical demands of a critical federal infrastructure site. The solicitation is classified as a subcontract under NAICS code 237300, with a response deadline of May 14, 2026, and was posted on April 28, 2026. The contracting agency is the Lower Colorado Regional Office under the Department of the Interior, with performance located at Hoover Dam. No set-aside provisions are specified, and while detailed contact information is not provided, all submissions must be made through the official SAM.gov portal prior to the deadline.

General Info

Heavy civil construction subcontract for earthwork and grading at Hoover Dam vessel barrier gate repair.

Agency

Department Of The Interior → Lower Colorado Regional Office

NAICS

237300

Place of Performance

Set-Aside

NONE

Documents

This scope was carved out of 140R3026Q0038.

The full solicitation package (7 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Z--Lakeside Vessel Barrier Gate Repair at Hoover Dam

AI Contract Breakdown

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Timeline

PhaseClosed

PostedApr 28

subcontract

Response DeadlineMay 14

Deadline has passed

Submission Closed

05/14/2026, 11:00:00 PM UTC

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Organization & Contact Information

AgencyDepartment Of The Interior → Lower Colorado Regional Office

ContactsNo contacts available

OfficeN/A

Organization / Agency

Department Of The Interior → Lower Colorado Regional Office

Office AddressN/A

ContactsNo contact information available

Full Description

Site preparation, excavation, backfilling, and precision grading using heavy equipment such as motor graders, excavators, and bulldozers for vessel barrier gate repair at Hoover Dam.

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