Other Heavy and Civil Engineering Construction: NAICS 237990
Browse federal contract opportunities classified under NAICS code 237990 (Other Heavy and Civil Engineering Construction). Find active solicitations on SAM.gov, understand size standards, and discover set-aside opportunities for your business.
About NAICS 237990
Other Heavy and Civil Engineering Construction. This industry falls under the Construction sector (NAICS codes beginning with 23).
Federal agencies use NAICS code 237990 when posting contract opportunities on SAM.gov to classify the type of work being solicited. Businesses that operate in the other heavy and civil engineering construction space should include this code in their SAM.gov registration and capability statements to ensure they appear in relevant searches.
How to Use NAICS 237990 in Federal Contracting
To compete for federal contracts under NAICS 237990, your business should be registered in SAM.gov with this NAICS code listed in your entity profile. When agencies post solicitations for other heavy and civil engineering construction work, they reference this code to determine the applicable small business size standard and any set-aside eligibility.
If you hold certifications such as 8(a), HUBZone, SDVOSB, or WOSB, you may be eligible for set-aside contracts under this NAICS code. These set-asides limit competition to certified small businesses, giving you a significant advantage in winning federal work.
FedOverwatch monitors SAM.gov daily and can automatically match you with new opportunities under NAICS 237990. Set up your profile with your NAICS codes and certifications to receive personalized contract alerts.
NAICS 237990 Market Intelligence
Based on 3 years of federal award data from USAspending.gov, the other heavy and civil engineering construction market has seen 8,308 contract awards totaling $26.3B in value. The median contract size is $205K, with approximately 231 new awards per month.
Total Awards (3yr)
8,308
Total Value
$26.3B
Median Contract
$205K
Competitors
1,308
Contract value distribution
5,069 small business awards ($7.6B total value,$188K median)
1,308 companies compete for NAICS 237990 contracts
See who's winning, their award values, and where you fit in the market
Explore CompetitorsSize Standards
The SBA establishes size standards for each NAICS code to define what qualifies as a "small business" for federal contracting purposes. For NAICS 237990 (Other Heavy and Civil Engineering Construction), the size standard is based on either average annual receipts or number of employees, depending on the specific industry. Meeting the size standard for your primary NAICS code is required to qualify for small business set-aside contracts.
Visit the SBA Size Standards Table to find the current threshold for NAICS 237990.
Recent NAICS 237990 Opportunities
View all →The Department of Agriculture is procuring construction services for flood damage repairs at Pine Valley Dam following significant post-fire flooding in October 2025. The work includes excavation, slope grading, spillway repairs, and masonry reconstruction, which must be performed by the incumbent contractor, Jackson Excavation Inc., due to the integrated nature of the tasks and the risks associated with multiple contractors working in the same areas.
The Department of Defense is procuring the replacement of Dry Dock No. 4 caisson at Joint Base Pearl Harbor-Hickam, Hawaii. This project involves a design-build and design-bid-build approach under a multiple award construction contract framework. The work is specifically targeted for MACC holders and is part of a broader initiative for waterfront construction in Hawaii and Wake Island.
The Department of Defense is procuring maintenance dredging services for the Duwamish Waterway in Seattle, WA. The project involves the removal of up to 100,000 cubic yards of sediment, with a contract value estimated between $1,000,000 and $5,000,000, and is set aside for small businesses. Dredging is scheduled to occur within a specific work window from December 1 to February 15.
The Department of Defense is procuring a Dredged Material Management Plan (DMMP) for the rehabilitation of upland confined disposal area 12A along the Calcasieu Ship Channel in Calcasieu Parish, LA. Key requirements include clearing, excavation, degrading the existing dike, and placing excavated material to the required grade, along with incidental operations as detailed in the drawings.
Frequently Asked Questions
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