NAICS 237in23:Construction

Heavy and Civil Engineering Construction

1,467 active contract opportunities

1,467

Active Opportunities

1,309

Posted Last 7 Days

30 days

Avg Response Window

Top Industries

  • Other Heavy and Civil Engineering Construction629
  • Highway, Street, and Bridge Construction458
  • Water and Sewer Line and Related Structures Construction236
  • Power and Communication Line and Related Structures Construction73
  • NAICS 237110 Water and Sewer Line and Related Structures Construction24

Set-Aside Distribution

  • Small Business591
  • 588
  • No Set Aside69
  • Full & Open65
  • SDVOSB60

Top Locations

  • VA173
  • CA126
  • WA122
  • LA81
  • CO65

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

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)

Solids Biofilter Rehabilitation

Small Business Administration (SBA)
MO
NAICS 237110
Posted Mar 30, 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)

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)

2026 Water Meter Installation Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Mar 26, 2026
Due May 5, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), Veteran-Owned Small Business (VOSB), 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)

New Germany State Park Water Distribution, Collection System, and Water/Wastewater Treatment Plant Upgrades

Small Business Administration (SBA)
MD
NAICS 237110
Posted Mar 26, 2026
Due Apr 9, 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, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

WASTEWATER REISE – STORAGE RESERVOIRS – PHASE II

Small Business Administration (SBA)
ID
NAICS 237110
Posted Mar 26, 2026
Due Apr 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 Mar 26, 2026
Due Apr 23, 2026
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 Mar 26, 2026
Due Apr 23, 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)

503 & 400 dorm road repair

Small Business Administration (SBA)
KY
NAICS 237310
Posted Mar 25, 2026
Due Apr 13, 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)

SC 1043R

Small Business Administration (SBA)
MD
NAICS 237110
Posted Mar 24, 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 Mar 24, 2026
Due Apr 23, 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, Disadvantaged Veteran Business Enterprise (DVBE) – State of California, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Philomath Water Treatment Plant Improvements

Small Business Administration (SBA)
OR
NAICS 237110
Posted Mar 24, 2026
Due Mar 31, 2026
Small Business (SB), Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

Canyon Lake Plant WO C2001

Small Business Administration (SBA)
CA
NAICS 237110
Posted Mar 24, 2026
Due Jun 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), 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)

SC 1051

Small Business Administration (SBA)
MD
NAICS 237110
Posted Mar 23, 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)

W912EE26BA003 - Lease of One Cutterhead, Hydraulic Pipeline Dredge (Not Less Than 24-Inch Diameter) Fully Operated with Attendant Plant and Personnel, and with a Draft not to Exceed 9 Feet, for Construction and Maintenance Dredging - MS River Harbors

DEPT OF DEFENSE
VICKSBURG, MS
NAICS 237990
Posted Mar 23, 2026
Due Mar 31, 2026
No Set Aside

Absecon Island - Outfall Repair

DEPT OF DEFENSE
PHILADELPHIA, PA
NAICS 237990
Posted Mar 23, 2026
Due Mar 30, 2026

W912EE26BA002 - Lease of One Cutterhead, Hydraulic Pipeline Dredge (Not Less Than 24-Inch Diameter) Fully Operated with Attendant Plant and Personnel, and with a Draft not to Exceed 9 Feet, for Construction and Maintenance Dredging - JBJ Waterway

DEPT OF DEFENSE
VICKSBURG, MS
NAICS 237990
Posted Mar 23, 2026
Due Apr 2, 2026
No Set Aside

LC- Multiple Locations-Replace Various Fire Hydrants and Hydrant Valves

DEPT OF DEFENSE
NORFOLK, VA
NAICS 237110
Posted Mar 23, 2026
Due Apr 15, 2026
Small Business
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