NAICS 237990 - Other Heavy and Civil Engineering Construction
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What is NAICS 237990
NAICS code 237990 encompasses establishments engaged in heavy and civil engineering construction projects that exclude highway, street, bridge, and distribution line construction. This sector involves complex infrastructure initiatives such as dam building, dredging, marine facility development, and open space improvements like parks and recreational trails. Businesses operating under this code specialize in new construction, reconstruction, rehabilitation, and repair work, often requiring advanced technical expertise and heavy equipment. Specialty trade contractors focusing on heavy civil projects, excluding oil and gas or utility structures, also fall within this classification. Government agencies contract for these services to support critical infrastructure, environmental management, and public works that enhance community resilience and economic development.
Industry Classification for NAICS 237990
This industry comprises establishments primarily engaged in heavy and civil engineering construction projects (excluding highway, street, bridge, and distribution line construction). The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to heavy and civil engineering construction projects (excluding highway, street, bridge, distribution line, oil and gas structure, and utilities building and structure construction). Construction projects involving water resources (e.g., dredging and land drainage), development of marine facilities, and projects involving open space improvement (e.g., parks and trails) are included in this industry.
Illustrative Examples:
- Channel construction
- Land drainage contractors
- Dam construction
- Marine construction
- Dock construction
- Microtunneling contractors
- Dredging (e.g., canal, channel, ditch, waterway)
- Nuclear waste disposal site construction
- Earth retention system construction
- Flood control project construction
- Park ground and recreational open space improvement construction
- Railroad construction
- Golf course construction
- Subway construction
- Horizontal drilling (e.g., cable, pipeline, sewer installation)
- Trenching, underwater
- Hydroelectric generating station construction
- Tunnel construction
Breakdown for NAICS 237990
- Includes heavy and civil engineering construction projects excluding highways, streets, bridges, and distribution lines.
- Covers new construction, reconstruction, rehabilitation, and repair work.
- Specialty trade contractors focused on heavy civil engineering are included.
- Projects commonly involve water resource management, marine facilities, and open space improvements.
- Typical government contracting sector with complex infrastructure projects.
- Subject to stringent environmental and safety regulations.
Included Activities for NAICS 237990
- Constructing dams and flood control systems.
- Performing dredging operations in canals and waterways.
- Building marine terminals, docks, and related marine facilities.
- Developing and improving parks, trails, and recreational open spaces.
- Executing tunnel and subway construction projects.
- Conducting horizontal drilling and microtunneling for pipelines and cables.
- Installing earth retention systems and land drainage solutions.
- Constructing hydroelectric generating stations and nuclear waste disposal sites.
Business Types for NAICS 237990
- Heavy civil engineering construction contractors
- Specialty trade contractors focused on water resource projects
- Marine construction firms
- Environmental remediation and dredging companies
- Tunnel and underground excavation contractors
- Recreational open space and park construction companies
Subcategories for NAICS 237990
- Anchored earth retention contractors
- Athletic field (except stadium) construction
- Avalanche, rockslide, mudslide, or roadside protection construction
- Breakwater construction
- Bridle path construction
- Bulkhead wall or embankment construction
- Caisson (i.e., marine or pneumatic structures) construction
- Canal construction
- Channel construction
- Cofferdam construction
- Construction management, dam
- Construction management, marine structure
- Construction management, mass transit
- Construction management, outdoor recreation facility
- Construction management, tunnel
- Cribbing (i.e., shore protection), construction
- Dam construction
- Dike and other flood control structure construction
- Dock construction
- Drainage canal and ditch construction
- Drainage project construction
- Dredging (e.g., canal, channel, ditch, waterway)
- Drive-in movie facility construction
- Earth retention system construction
- Earth-filled dam construction
- Electricity generating plant, hydroelectric, construction
- Embankment construction
- Farm drainage tile installation
- Flood control project construction
- Floodway canal and ditch construction
- Gabion construction
- Golf course construction
- Harbor construction
- Helical pier (i.e., marine or pneumatic structures) construction
- Horizontal drilling (e.g., underground cable, pipeline, sewer installation)
- Hydroelectric generating facility construction
- Ice rink (except indoor) construction
- Jetty construction
- Land drainage contractors
- Levee construction
- Light rail system construction
- Lock and waterway construction
- Marine construction
- Microtunneling contractors
- Missile facility construction
- Monorail construction
- Nuclear waste disposal site construction
- Outdoor recreation facility construction
- Park and recreational open space improvement construction
- Pier construction
- Pile driving, marine
- Pipe-jacking contractors
- Playground construction
- Port facility construction
- Power plant, hydroelectric, construction
- Railroad construction
- Railway construction (e.g., interlocker, roadbed, signal, track)
- Railway roadbed construction
- Recreation area, open space, construction
- Recreational vehicle park construction
- Retaining walls, anchored (e.g., with piles, soil nails, tieback anchors), construction
- Revetment construction
- Riprap installation
- Rock removal, underwater
- Seawall, wave protection, construction
- Sediment control system construction
- Ski tow construction
- Spillway, floodwater, construction
- Sports field construction
- Streetcar line construction
- Subway construction
- Tennis courts, outdoor, construction
- Timber removal, underwater
- Trail construction
- Trenching, underwater
- Tunnel construction
- Wharf construction
Government Buyers for NAICS 237990
Federal, state, and local government agencies are primary purchasers of services under NAICS 237990. Key buyers include the U.S. Army Corps of Engineers, Environmental Protection Agency, Department of Transportation, and local public works departments. These agencies require specialized heavy construction expertise to build and maintain critical infrastructure such as flood control systems, water resource management facilities, marine terminals, and public recreational areas. Contracting with experienced firms ensures compliance with regulatory standards, environmental considerations, and long-term durability of public assets.
Contract Types & Procurement for NAICS 237990
Contracts awarded under this NAICS code commonly include firm-fixed-price, cost-reimbursement, and time-and-materials agreements depending on project complexity. Procurement methods range from competitive sealed bidding to negotiated contracts often utilizing Requests for Proposals (RFPs). Contract values vary widely based on project scope, with smaller specialized tasks valued in the low hundreds of thousands and large infrastructure projects reaching into tens or hundreds of millions of dollars. Many contracts require compliance with environmental regulations and safety standards, and include performance-based incentives and milestone payments.
Details for NAICS 237990
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