NAICS 237990: Other Heavy and Civil Engineering Construction
Other Heavy and Civil Engineering Construction is NAICS code 237990. A business is small under it with $45 million or less in average annual receipts. 201 federal contracts are open on SAM.gov under this code right now.
- SBA size standard
- $45 million or less in average annual receipts
- Open contracts now
- 201
- Federal spending, FY2025
- $10.3 billion
- Share won by small businesses
- 25%
- Small businesses registered
- 5,592
Open federal contracts for other heavy and civil engineering construction
- Placement Area MATOC, Texas
Due in 1 dayOct 5, 2026
- Corning and Holt 10 Levee Repairs
✦ The U.S. Army Corps of Engineers, Kansas City District, is soliciting a single firm-fixed-price contract for levee repairs at the Corning and Holt 10 Levees in Holt County,…
Due in 1 dayOct 5, 2026
- National Enterprise Dredging Center Scope Dredge to Budget Shallow Draft
✦ The Army Corps of Engineers (Wilmington District, National Enterprise Dredging Center) is gathering market research for a future small-business-set-aside "Scope-Dredge to Budget"…
Due in 1 dayOct 5, 2026
- Atlantic Intracoastal Waterway Maintenance Dredging
Due in 1 dayOct 5, 2026
- NAICS 237990 PSC Y1PZ--CONS: 909CM3030 Fort Custer NC - Cemetery Expansion and Site Improvements (VA-26-00046764)
Due in 2 daysOct 6, 2026
- Bradbury Dam Outlet Valve Replacement
Due in 2 daysOct 6, 2026
What NAICS 237990 covers
The Census Bureau's NAICS index lists these kinds of work under 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
- Cribbing (i.e., shore protection), construction
- Dam construction
- Dike and other flood control structure construction
The index lists 77 entries for this code in all.
Read the full definition, including what's excluded, on census.gov.
SBA size standard for 237990
To count as a small business for a contract assigned NAICS 237990, your business must have $45 million or less in average annual receipts. Receipts are averaged over your last five completed fiscal years.
Some contracts under this code use a different limit:
- Dredging and Surface Cleanup Activities: $37 million or less in average annual receipts
From SBA's table of size standards, effective Mar 17, 2023. Confirm it with SBA's size standards tool before you certify your size.
Who buys other heavy and civil engineering construction
Agencies that awarded the most under NAICS 237990 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of the Army | $21.7 billion |
| Department of the Navy | $7.1 billion |
| Bureau of Reclamation | $903.4 million |
| National Park Service | $672.4 million |
| Department of Veterans Affairs | $549.4 million |
| Department of the Air Force | $115.9 million |
| U.S. Customs and Border Protection | $115.8 million |
| Forest Service | $104.6 million |
Open notices right now come from Dept of Defense (174), Department of the Interior (18), Department of Veterans Affairs (4), Department of Commerce (2), Department of Agriculture (2) and Department of Homeland Security (1).
Set-asides on open 237990 contracts
- No set-aside (full and open): 152
- Total small business set-aside: 39
- Service-disabled veteran-owned set-aside: 7
- 8(a) set-aside: 1
- HUBZone set-aside: 1
- Women-owned set-aside: 1
Not sure which set-asides you qualify for? Try the free SBA certification screener, or read set-aside contracts, explained.
Your competition
5,592 businesses with active SAM.gov registrations are rated small under NAICS 237990, most of them in California (535), Florida (482), Texas (470), Virginia (223) and Alaska (202). Look any of them up with the free CAGE code and UEI lookup.
Federal spending under 237990 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $10.2 billion |
| FY2025 | $10.3 billion |
| FY2026 | $11.3 billion |
| FY2027 (so far) | $-295,543 |
Source: USAspending.gov, all contract awards with this NAICS code. Fiscal years start October 1.
Frequently asked questions
What is NAICS code 237990?
237990 is the 2022 NAICS code for Other Heavy and Civil Engineering Construction. The Census Bureau's index lists work such as anchored earth retention contractors, athletic field (except stadium) construction, avalanche, rockslide, mudslide, or roadside protection construction under it. Federal contracting uses the 2022 codes.
What is the SBA size standard for NAICS 237990?
$45 million or less in average annual receipts. A business at or under that is small for contracts assigned this code. Some kinds of contracts under this code use a different limit. The current SBA table took effect Mar 17, 2023.
Are there government contracts for other heavy and civil engineering construction?
Yes. 201 federal contract opportunities under NAICS 237990 are open on SAM.gov right now. Agencies obligated about $10.3 billion under this code in fiscal year 2025, according to USAspending.gov.
How do I add NAICS code 237990 to my SAM.gov registration?
Update your entity registration on SAM.gov and add the code on the Goods and Services page, in the Assertions section. You can list several NAICS codes and mark one as your primary. Changes are free.
Keep going
- Government construction contracts, across every related code
- Search other NAICS codes by keyword or company
- How to choose NAICS codes for government contracts
- NAICS codes with the most open federal contracts
FedReady is an independent company, not affiliated with SBA, SAM.gov, the Census Bureau or any government agency. Open-contract counts come from SAM.gov and update daily; spending figures come from USAspending.gov.