NAICS 237in23:Construction

Heavy and Civil Engineering Construction

1,422 active contract opportunities

1,422

Active Opportunities

1,267

Posted Last 7 Days

30 days

Avg Response Window

Top Industries

  • Other Heavy and Civil Engineering Construction603
  • Highway, Street, and Bridge Construction450
  • Water and Sewer Line and Related Structures Construction232
  • Power and Communication Line and Related Structures Construction73
  • NAICS 237110 Water and Sewer Line and Related Structures Construction24

Set-Aside Distribution

  • Small Business571
  • 565
  • Full & Open67
  • No Set Aside64
  • SDVOSB59

Top Locations

  • VA169
  • CA132
  • WA119
  • LA81
  • NM63

About NAICS237

The North American Industry Classification System (NAICS) code 237 covers heavy and civil engineering construction. Federal agencies use NAICS codes to classify contracts by industry. Businesses should register their applicable NAICS codes in SAM.gov.

SAM.gov Registration →|Set-Aside Programs →

Related Industries

236:Construction of Buildings238:Specialty Trade Contractors

Port of Los Angeles - Berths 167-169 Phase II Marine Oil Terminal Improvements, CA

Small Business Administration (SBA)
CA
NAICS 237990
Posted Apr 4, 2026
Due May 6, 2026
Small Business (SB)

Crossroads Pump Station

Small Business Administration (SBA)
WY
NAICS 237110
Posted Apr 4, 2026
Due Apr 15, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

2026 Pioneer Trail Waterline Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 3, 2026
Due Apr 23, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

SIMMS CREEK SIPHON REPLACEMENT PROJECT

Small Business Administration (SBA)
MT
NAICS 237110
Posted Apr 3, 2026
Due Apr 20, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Caltrans 03-3G6104 in CA

Small Business Administration (SBA)
CA
NAICS 237310
Posted Apr 3, 2026
Due Apr 14, 2026
Small Business (SB), Disadvantaged Veteran Business Enterprise (DVBE) – State of California

Dam Road Roundabout Project in Lake County in Clearlake

Small Business Administration (SBA)
CA
NAICS 237310
Posted Apr 3, 2026
Due Apr 16, 2026
Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Roadway Construction at Kelbaker, Kelso-Cima, Cima and Morning Star Mine Roads [CA NP MOJA 11(2) 10(2)]

Small Business Administration (SBA)
CA
NAICS 237310
Posted Apr 3, 2026
Due Apr 30, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB)

2026 Water Meter Installation Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 3, 2026
Due May 5, 2026
Small Disadvantaged Business (SDB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

River City High School Tennis Courts

Small Business Administration (SBA)
CA
NAICS 237990
Posted Apr 3, 2026
Due Apr 14, 2026
Disadvantaged Veteran Business Enterprise (DVBE) – State of California

TOWN OF FAIRFIELD WATER IMRPOVEMENTS PROJECT PHASE 2

Small Business Administration (SBA)
MT
NAICS 237110
Posted Apr 3, 2026
Due Apr 22, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

2026 Water Meter Installation Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 2, 2026
Due May 5, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Mid-Pauba Groundwater Banking PDB

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 2, 2026
Due May 1, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

2026 PIONEER TRAIL WATERLINE PROJECT

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 1, 2026
Due Apr 23, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Sweetwater Avenue Sewer Relief

Small Business Administration (SBA)
AZ
NAICS 237110
Posted Apr 1, 2026
Due Apr 7, 2026
Small Business (SB)

Oklahoma Avenue MIS Capacity Expansion

Small Business Administration (SBA)
WI
NAICS 237110
Posted Mar 31, 2026
Due Apr 22, 2026
Small Business (SB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Solids Biofilter Rehabilitation

Small Business Administration (SBA)
MO
NAICS 237110
Posted Mar 31, 2026
Due Apr 9, 2026
Small Business (SB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Lead Service Line Inventory

Small Business Administration (SBA)
CA
NAICS 237110
Posted Mar 30, 2026
Due Apr 30, 2026
Small Business (SB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Tranquillity PUD Headworks Improvements

Small Business Administration (SBA)
CA
NAICS 237110
Posted Mar 30, 2026
Due Apr 22, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Upgrade Lift Station Gravity Feed

Small Business Administration (SBA)
OR
NAICS 237110
Posted Mar 30, 2026
Due Apr 24, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB)

B-10000509

Small Business Administration (SBA)
MD
NAICS 237110
Posted Mar 27, 2026
Due May 1, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Veteran-Owned Small Business (VOSB), SBA-certified Service-Disabled Veteran-Owned Small Business (SDVOSB), Alaskan Native Corporation (ANC) or Indian Tribe (IT), Native Hawaiian Organization (NHO), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)
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