NAICS 237in23:Construction

Heavy and Civil Engineering Construction

1,388 active contract opportunities

1,388

Active Opportunities

1,233

Posted Last 7 Days

30 days

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Top Industries

  • Other Heavy and Civil Engineering Construction579
  • Highway, Street, and Bridge Construction441
  • Water and Sewer Line and Related Structures Construction234
  • Power and Communication Line and Related Structures Construction71
  • NAICS 237110 Water and Sewer Line and Related Structures Construction24

Set-Aside Distribution

  • Small Business553
  • 546
  • Full & Open74
  • No Set Aside60
  • SDVOSB59

Top Locations

  • VA163
  • CA134
  • WA117
  • LA80
  • NM61

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

Sewer Collection System Pipeline Rehabilitation and Replacement Project Phase 10, CA

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 14, 2026
Due May 14, 2026
Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal), Woman Business Enterprise (WBE) – WBENC certification (non-federal)

San Diego Canal Radial Gates Rehabilitation, CA

Small Business Administration (SBA)
CA
NAICS 237310
Posted Apr 13, 2026
Due Apr 30, 2026
Small Business (SB), Disadvantaged Veteran Business Enterprise (DVBE) – State of California

Tulare Dayton Improvements Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 13, 2026
Due May 7, 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)

Coachella Valley Water District: Valley View Water Consolidation Project (Spec No. 2025-14)

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 13, 2026
Due Jun 4, 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)

Canyon Lake WTP in Lake Elsinore, CA

Small Business Administration (SBA)
CA
NAICS 237310
Posted Apr 13, 2026
Due Jun 24, 2026
Small Business (SB), Women-Owned Small Business (WOSB), SBA-certified HUBZone Small Business (HUBZone SB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation, 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 13, 2026
Due Apr 23, 2026
SBA-certified HUBZone Small Business (HUBZone 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)

SEWER COLLECTION SYSTEM PIPELINE REHABILITATION AND REPLACEMENT PROJECT PHASE 10

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 10, 2026
Due May 14, 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)

DCW-SOL-26-10547/260060

Small Business Administration (SBA)
DC
NAICS 237110
Posted Apr 10, 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)

SHERIDAN OLD LANDFILL CORRECTIVE MEASURES

Small Business Administration (SBA)
WY
NAICS 237110
Posted Apr 9, 2026
Due May 5, 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)

AMI Meter Replacement Project

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 9, 2026
Due May 12, 2026
Disadvantaged Business Enterprise (DBE) – Dept of Transportation

SC 1047R

Small Business Administration (SBA)
MD
NAICS 237110
Posted Apr 9, 2026
Due May 6, 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)

SAWS Mission Pump Station Well No. 9

Small Business Administration (SBA)
TX
NAICS 237110
Posted Apr 9, 2026
Due May 7, 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)

WSSC MD IDIQ Task 140 South Bethesda Sewer Rehab

Small Business Administration (SBA)
MD
NAICS 237110
Posted Apr 9, 2026
Due Apr 16, 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)

Waterworks District No. 1 of Ward 1 of Calcasieu Parish, Louisiana

Small Business Administration (SBA)
LA
NAICS 237110
Posted Apr 9, 2026
Due Apr 21, 2026
Disadvantaged Business Enterprise (DBE) – Dept of Transportation, Minority Business Enterprise (MBE) – NMSDC certification (non-federal)

WC 1454

Small Business Administration (SBA)
MD
NAICS 237110
Posted Apr 8, 2026
Due May 6, 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)

WASTEWATER REISE – STORAGE RESERVOIRS – PHASE II

Small Business Administration (SBA)
ID
NAICS 237110
Posted Apr 7, 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)

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 6, 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 6, 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)

Hollywood Tunnel North Portal Pressure Control Structure Valve Replacement, CA

Small Business Administration (SBA)
CA
NAICS 237310
Posted Apr 6, 2026
Due Apr 23, 2026
Small Business (SB), Disadvantaged Veteran Business Enterprise (DVBE) – State of California

Canyon Lake Plant WO C2001

Small Business Administration (SBA)
CA
NAICS 237110
Posted Apr 6, 2026
Due Jun 24, 2026
Small Business (SB), Small Disadvantaged Business (SDB), Women-Owned Small Business (WOSB), Disadvantaged Business Enterprise (DBE) – Dept of Transportation
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