NAICS Code Guide
NAICS 237310: Highway, Street & Bridge Construction
Heavy-civil contractors fall under 237310 — base roads, runways, and bridge replacements. FHWA, USACE, and DoD installations are the main buyers.
Quick facts
- NAICS code
- 237310
- Title
- Highway, Street & Bridge Construction
- SBA size standard
- $45M
Government buyers
Example contract opportunities
- Runway resurfacing at military installations
- USACE access roads
- FLH FHWA contracts
Industry context
DBE participation goals (often 10-15%) and Buy America steel/iron rules are universal on this code.
Related NAICS codes
- NAICS 237990 — Other Heavy Construction
- NAICS 541330 — Engineering Services
Related industries
States with the most activity in this NAICS
FAQs
- What is NAICS 237310?
- NAICS 237310 is the federal classification for Highway, Street & Bridge Construction. Heavy-civil contractors fall under 237310 — base roads, runways, and bridge replacements. FHWA, USACE, and DoD installations are the main buyers.
- What is the SBA small-business size standard for NAICS 237310?
- The SBA size standard for NAICS 237310 is $45M. A business at or below this threshold qualifies for small-business set-asides under this code.
- Which agencies buy under NAICS 237310?
- Top federal buyers under NAICS 237310 include Department of Transportation, U.S. Army Corps of Engineers, FHWA.
- What are example contracts under NAICS 237310?
- Runway resurfacing at military installations; USACE access roads; FLH FHWA contracts.
- What are the most-related NAICS codes?
- Closely related codes include 237990 (Other Heavy Construction), 238910 (), 541330 (Engineering Services).