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    1. Home
    2. /Gov Explore
    3. /NAICS Codes
    4. /237, Heavy and Civil Engineering Construction

    NAICS Demand Lane

    Heavy and Civil Engineering Construction, Contract Opportunities

    66,074 total opportunities (66,074 active) tied to NAICS 237 across federal, state, local, and forecast sources.
    NAICS 237Cross-source coveragePreviewing 10 opportunities
    View NAICS definition →
    Total Opportunities
    66.1K
    Across all indexed sources
    Active Estimate
    66.1K
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest opportunities

    Previewing the latest 10 opportunities for NAICS 237.

    DEPARTMENT OF THE INTERIOR

    Z--PROSSER CREEK DAM BASIN CLEANUP

    Active

    AI Summary

    The Bureau of Reclamation is soliciting proposals for the Prosser Creek Dam Basin cleanup. The proposal due date has been extended to October 08, 2026, at 1:00 p.m. PST. This opportunity is categorized under environmental services and construction services.

    CA

    Posted Oct 2, 2026Due Oct 8, 2026SolicitationNAICS 237990Total Small Business Set-Aside (FAR 19.5)Sol: 140R2026R0013
    View details→

    DEPARTMENT OF THE INTERIOR

    Z--FOLSOM WAREHOUSE BRIDGE CRANE REPLACEMENT

    Active

    AI Summary

    The Department of the Interior is seeking proposals for the design, build, furnish, and installation of a 30-ton bridge crane to replace the existing crane at the Folsom Dam Warehouse. This solicitation includes clarifications on proposal instructions and additional details regarding the circuit breaker.

    CA

    Posted Oct 2, 2026Due Oct 9, 2026SolicitationNAICS 237990Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside (FAR 19.14)Sol: 140R2026R0017
    View details→

    DEPT OF DEFENSE

    AIRCRAFT PARKING APRON, RAAF TINDAL, AUSTRALIA

    Active

    AI Summary

    This Sources Sought announcement seeks potential sources for the construction of an aircraft parking apron at RAAF Tindal, Australia. The project includes infrastructure for large-frame aircraft, utilities, airfield lighting, and more. Interested parties must submit qualifications by 19 October 2026. This is not a soli…

    HI

    Posted Oct 2, 2026Due Oct 20, 2026Sources SoughtNAICS 237310Sol: N62742PRKAPRN
    View details→

    DEPT OF DEFENSE

    REQUEST FOR INFORMATION/MARKET INTELLIGENCE NOTICE: MICROGRID PROJECTS – USE OF PROGRESSIVE DESIGN BUILD (PDB) WITH OTHER TRANSACTION AUTHORITY (OTA)

    Active

    AI Summary

    The U.S. Army Corps of Engineers is seeking information for microgrid projects using Progressive Design-Build and Other Transaction Authority. Interested firms should provide feedback on project execution and acquisition strategies by October 16, 2026. This RFI aims to gather market intelligence and does not constitute…

    KY

    Posted Oct 2, 2026Due Oct 16, 2026Sources SoughtNAICS 237130Sol: W912QR-PDBOTA-ERCIP_FTSILLCAMPPARKS
    View details→

    DEPT OF DEFENSE

    HALEIWA SMALL BOAT HARBOR MAINTENANCE DREDGING AND REVETTED MOLE REPAIR, HALEIWA, OAHU, HAWAII

    Active

    AI Summary

    The opportunity involves maintenance dredging and revetted mole repair at Haleiwa Small Boat Harbor in Oahu, Hawaii. This solicitation is issued by the Department of Defense, specifically the Department of the Army. Interested bidders should refer to the Procurement Integrated Enterprise Environment (PIEE) for the late…

    HI

    Posted Oct 2, 2026Due Oct 8, 2026SolicitationNAICS 237990Sol: W9128A26BA002
    View details→

    DEPT OF DEFENSE

    TWO PHASE DESIGN AND CONSTRUCTION OF THE PORT MONMOUTH PHASE II, CONTRACT 1 MITIGATION PROJECT

    Active

    AI Summary

    The Port Monmouth Phase II project involves the design and construction of flood risk management and shore protection components. It aims to reduce storm damage from coastal and inland flooding. The project includes various structures such as levees, floodwalls, and pump stations, with the New Jersey Department of Envi…

    NY

    Posted Oct 2, 2026Due Oct 19, 2026SolicitationNAICS 237990Sol: W912DS26RA032
    View details→

    DEPT OF DEFENSE

    TYBEE ISLAND SHORELINE PROTECTION PROJECT

    Active

    AI Summary

    The U.S. Army Corps of Engineers is seeking market research responses for the Tybee Island Shoreline Protection Project, which involves dredging and beach nourishment. Interested firms should provide information on their capabilities, equipment, and relevant experience. The project is expected to occur between late Dec…

    GA

    Posted Oct 2, 2026Due Oct 9, 2026Sources SoughtNAICS 237990Sol: W912HN27BA001
    View details→

    DEPARTMENT OF THE INTERIOR

    Z--BRADBURY DAM OUTLET VALVE REPLACEMENT

    Active

    AI Summary

    The Department of the Interior, Bureau of Reclamation, is soliciting proposals for the replacement of existing 30-inch valves at Bradbury Dam. This project aims to enhance the operation and efficiency of water releases within the outlet works. Interested bidders should prepare to submit their proposals by the specified…

    CA

    Posted Oct 2, 2026Due Oct 6, 2026SolicitationNAICS 237990Sol: 140R2026R0018
    View details→

    DEPT OF DEFENSE

    MAINTENANCE DREDGING OF THE WINTER HARBOR FEDERAL NAVIGATION CHANNEL

    Active

    AI Summary

    The U.S. Army Corps of Engineers is seeking qualified firms for maintenance dredging of the Winter Harbor Federal Navigation Channel in Virginia. This sources sought notice is for information gathering only, with no solicitation available at this time. Interested firms should respond by October 22, 2026, with their cap…

    VA

    Posted Oct 2, 2026Due Oct 22, 2026Sources SoughtNAICS 237990Sol: W9123627BA005
    View details→

    DEPARTMENT OF THE INTERIOR

    Y--REHABILITATION OF WATER AND WASTEWATER SYSTEM

    Active

    AI Summary

    The Department of the Interior, National Park Service, is soliciting proposals for the rehabilitation of water and wastewater systems at Curecanti National Recreation Area. This opportunity is categorized under NAICS code 237110 and is open for both product and service offerings. Interested bidders should prepare to su…

    CO

    Posted Oct 2, 2026Due Oct 7, 2026SolicitationNAICS 237110Total Small Business Set-Aside (FAR 19.5)Sol: 140P2026B0003
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    19,364
    sled
    46,235
    forecast
    475

    Related NAICS Codes

    • 23, Construction→
    • 236, Construction of Buildings→
    • 2361, Residential Building Construction→
    • 23611, Residential Building Construction→
    • 236115, New Single-Family Housing Construction (except For-Sale Builders) →
    • 236116, New Multifamily Housing Construction (except For-Sale Builders) →
    • 236117, New Housing For-Sale Builders →
    • 236118, Residential Remodelers →
    • 2362, Nonresidential Building Construction→
    • 23621, Industrial Building Construction→

    Explore

    • 237 Definition→
    • Browse NAICS Codes→
    • PSC Contract Lanes→
    • AI Contract Categories→
    • Browse by Agency→
    • Browse by State→

    About NAICS 237

    This industry comprises establishments primarily engaged in heavy and civil engineering construction, including projects such as highways, bridges, tunnels, and utility systems. It involves specialized construction activities that require engineering expertise and heavy equipment.

    Read the full NAICS definition →