Industries › NAICS 237120
Industry · NAICS 237120 · sector 23 Construction
Oil and Gas Pipeline and Related Structures Construction
Federal contract obligations classified under NAICS 237120, the organisations that win them and the agencies that award them.
USAspending caveat. Figures are obligations reported by federal agencies to USAspending.gov, not payments. In USAspending's words: "An outlay occurs when federal money is actually paid out, not just promised to be paid ('obligated')." "Every agency has a Senior Accountable Official who must officially certify that the quarterly financial data submitted by their agency is accurate and complete." "If there are any discrepancies in procurement data, FPDS is the authoritative source." Contract data for the Department of Defense and the U.S. Army Corps of Engineers is published with a 90-day delay. Data loaded 30 Sep 2026.
Federal agencies obligated $190M in contracts classified under NAICS 237120, Oil and Gas Pipeline and Related Structures Construction, in FY2026, and $2.3B over the five fiscal years since FY2023; the industry ranks 127 of 526 on this site.
Obligations were down 69% on FY2025 ($605M), with $0 so far in FY2027.
The largest recipient organisations over FY2022–FY2025 were Weston Solutions Inc ($268M), Black Micro Corporation ($222M) and Aptim Federal Services, LLC ($216M).
By place of performance, the most money went to HI, CA and WA.
Contract obligations by fiscal year
Compared with the largest industry FY2026
| Measure | This industry | Aircraft Manufacturing | All contracts |
|---|---|---|---|
| Contract obligations, FY2026 | $190M | $45B | $716B |
| Five-year total | $2.3B | $211B | $3.0T |
| Share of all contract obligations, five years | 0.1% | 7.1% | 100% |
Top contractors obligations, FY2022–FY2025
| # | Organisation | Obligations |
|---|---|---|
| 1 | Weston Solutions Inc | $268M |
| 2 | Black Micro Corporation | $222M |
| 3 | Aptim Federal Services, LLC | $216M |
| 4 | Reliable Contracting Group, LLC | $170M |
| 5 | WSP USA Environment & Infrastructure Inc. | $150M |
| 6 | Nova Group, Inc. | $129M |
| 7 | Dawson Enterprises, Inc. | $104M |
| 8 | Gsi-Pond JV LLC | $83M |
| 9 | Nova Nacap a Joint Venture | $83M |
| 10 | Meb General Contractors Inc | $81M |
| 11 | Nova Constructors-Obayashi JV | $63M |
| 12 | Goshawk, LLC | $62M |
| 13 | Obayashi CMS JV | $60M |
| 14 | Garco Construction, Inc. | $55M |
| 15 | Absher Construction Co | $47M |
| 16 | Structural Associates Inc | $45M |
| 17 | Bristol Engineering Services Company, LLC | $43M |
| 18 | Red Point Construction, LLC | $40M |
| 19 | Granite Construction Company Guam | $39M |
| 20 | Silver Mountain Weston SB JV LLC | $35M |
| 21 | Toa Corporation | $34M |
| 22 | Chenega Reliable Services LLC | $31M |
| 23 | Cape-Burns & McDonnell JV | $29M |
| 24 | KNK Engineering Consulting Corp. | $27M |
| 25 | Ses Energy Services LLC | $24M |
Buying agencies $1.0M+ awards
Where the work is performed
Largest awards since FY2023
| Recipient | Awarding agency | Type | Award value | Begun | Place | Record |
|---|---|---|---|---|---|---|
| Black Micro Corporation | Department of DefenseDepartment of the Navy | ContractDefinitive Contract | $224M | 19 Apr 2023 | — | USAspending |
| Aptim Federal Services, LLC | Department of DefenseDepartment of the Navy | ContractDelivery Order | $133M | 14 Feb 2024 | HI | USAspending |
| Weston Solutions Inc | Department of DefenseDepartment of the Navy | ContractDelivery Order | $88M | 11 Sep 2025 | — | USAspending |
| Aptim Federal Services, LLC | Department of DefenseDepartment of the Navy | ContractDelivery Order | $81M | 30 Jun 2023 | HI | USAspending |
| Weston Solutions Inc | Department of DefenseDepartment of the Navy | ContractDelivery Order | $71M | 11 Dec 2023 | — | USAspending |
| Nova Constructors-Obayashi JV | Department of DefenseDepartment of the Army | ContractDefinitive Contract | $64M | 13 Mar 2023 | — | USAspending |
| Obayashi CMS JV | Department of DefenseDepartment of the Army | ContractDefinitive Contract | $60M | 26 Aug 2024 | — | USAspending |
| Nova Group, Inc. | Department of DefenseDepartment of the Army | ContractDefinitive Contract | $58M | 7 Apr 2026 | AK | USAspending |
| Garco Construction, Inc. | Department of DefenseDepartment of the Navy | ContractDefinitive Contract | $52M | 6 Sep 2024 | WA | USAspending |
| Absher Construction Co | Department of DefenseDepartment of the Navy | ContractDefinitive Contract | $47M | 24 Sep 2025 | WA | USAspending |
Other industries in sector 23: Construction
- 236220 Commercial and Institutional Building Construction $146B
- 237990 Other Heavy and Civil Engineering Construction $41B
- 237310 Highway, Street, and Bridge Construction $8.9B
- 237110 Water and Sewer Line and Related Structures Construction $4.9B
- 236210 Industrial Building Construction $4.7B
- 238220 Plumbing, Heating, and Air-Conditioning Contractors $4.2B
- 238210 Electrical Contractors and Other Wiring Installation Contractors $3.2B
- 238990 All Other Specialty Trade Contractors $3.1B
- 237130 Power and Communication Line and Related Structures Construction $3.0B
- 238160 Roofing Contractors $2.0B
- 238290 Other Building Equipment Contractors $1.6B
- 236116 New Multifamily Housing Construction (except For-Sale Builders) $1.1B
- 238910 Site Preparation Contractors $719M
- 236118 Residential Remodelers $619M
- 238320 Painting and Wall Covering Contractors $361M
- 238390 Other Building Finishing Contractors $309M
- 236115 New Single-Family Housing Construction (except For-Sale Builders) $153M
- 238330 Flooring Contractors $132M
- 238190 Other Foundation, Structure, and Building Exterior Contractors $129M
- 238110 Poured Concrete Foundation and Structure Contractors $104M
- 238140 Masonry Contractors $97M
- 238150 Glass and Glazing Contractors $83M
- 238120 Structural Steel and Precast Concrete Contractors $78M
- 238350 Finish Carpentry Contractors $27M
Questions and answers
How much does the federal government spend on NAICS 237120?
$190M in contract obligations classified under Oil and Gas Pipeline and Related Structures Construction in FY2026, $2.3B over the five fiscal years since FY2023. Obligations are commitments, not payments.
Who are the top contractors in Oil and Gas Pipeline and Related Structures Construction?
Weston Solutions Inc ($268M), Black Micro Corporation ($222M), Aptim Federal Services, LLC ($216M), Reliable Contracting Group, LLC ($170M), WSP USA Environment & Infrastructure Inc. ($150M), by contract obligations over FY2022–FY2025.
Which agencies buy in this industry?
By the value of $1.0M-plus contracts since FY2023: Department of Defense ($2.1B), Department of Veterans Affairs ($12M), Department of Homeland Security ($5.7M), Department of Justice ($3.3M), Department of Agriculture ($3.1M).
What is a NAICS code?
In USAspending's words: "NAICS stands for the North American Industrial Classification System. This 6-digit code tells you what industry the work falls into. Each contract record has a NAICS code." Assistance awards (grants, loans, direct payments) carry no NAICS code and are not counted here.
Provenance
Source: USAspending.gov API v2, spending by category (NAICS) by fiscal year, recipient cross-tabulation for FY2022–FY2025 and award search, loaded 30 Sep 2026. State figures come from each state's top-100 NAICS list, so small amounts in a state may be missing. See methodology.