North American Industry Classification System (NAICS) code 237990 is used by federal buyers for market research, set-aside size standards, and reporting. Official titles come from the Census Bureau NAICS structure.
Official definition
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.
Included activity examples
- Channel construction
- Dam construction
- Dock construction
- Dredging (e.g., canal, channel, ditch, waterway)
- Earth retention system construction
- Flood control project construction
- Golf course construction
- Horizontal drilling (e.g., cable, pipeline, sewer installation)
- Hydroelectric generating station construction
- Land drainage contractors
- Marine construction
- Microtunneling contractors
- Nuclear waste disposal site construction
- Park ground and recreational open space improvement construction
- Railroad construction
- Subway construction
- Trenching, underwater
- Tunnel construction
- Official title
- Other Heavy and Civil Engineering Construction
- Code level
- 6
- Parent industry
- Other Heavy and Civil Engineering Construction 23799
- Open opportunities
- 362 open · 2,073 active
SBA small-business size standard
$45M average annual receipts
Average annual receipts basis
Check this standard and its exceptionsExcluded or separately classified activities
Official Census cross-references identify activities that belong under another North American Industry Classification System (NAICS) code.
Constructing highways, streets, and bridges--are classified in Industry 237310, Highway, Street, and Bridge Construction;
Constructing oil and gas pipelines and related structures--are classified in Industry 237120, Oil and Gas Pipeline and Related Structures Construction;
Constructing power and communication transmission lines and related structures--are classified in Industry 237130, Power and Communication Line and Related Structures Construction;
Constructing water mains, sewers, and related structures--are classified in Industry 237110, Water and Sewer Line and Related Structures Construction;
Inspecting pipelines (i.e., visual)--are classified in Industry 541990, All Other Professional, Scientific, and Technical Services.
Installing and maintaining communication transmission lines and towers performed by telecommunications companies--are classified in Subsector 517, Telecommunications;
Installing and maintaining electric power lines and towers performed by electric utility companies--are classified in Industry Group 2211, Electric Power Generation, Transmission and Distribution;
Trenching (except underwater) or removing dams, dikes, and other heavy and civil engineering constructions--are classified in Industry 238910, Site Preparation Contractors; and
Source and edition
2022 NAICS Manual definition and reference material from the U.S. Census Bureau.