PSC Y1KA: Construction of Dams
Y1KA is the product and service code (PSC) federal agencies use for “Construction of Dams”, in the “Construction of Buildings” group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 1
- Federal contract spending, FY2025
- $408.4 million
- Share of contract dollars to small businesses, since FY2024
- 18%
Open count as of Oct 28, 2026, 5:43 PM ET. The search counts live, so its total can differ by a notice or two.
Open PSC Y1KA contracts with 2+ days to respond
- GAOA Tony Grove Dam Spillway Capacity & Seismic Mitigation, Uinta/Wasatch/Cache National Forest
✦ The USDA Forest Service (CSA Northwest 6) is asking small businesses for quotes under request for quotation (RFQ) 1240BH27Q0002 to rebuild parts of Tony Grove Dam on the…
Due in 23 daysNov 20, 2026, 5:00 PM MSTThe AI summary flags this date. Check SAM.gov.
Where Y1KA sits in the PSC Manual
- Category: Service
- Group Y: Construct of Structures/Facilities
- Group Y1: Construction of Buildings
- Code Y1KA: Construction of Dams
NAICS codes used with PSC Y1KA
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with Y1KA most often:
| NAICS | Industry | Spent, last 3 years | Open with PSC Y1KA |
|---|---|---|---|
| 237990 | Other Heavy and Civil Engineering Construction | $2.9 billion | 1 |
| 237310 | Highway, Street, and Bridge Construction | $15.3 million | — |
| 335312 | Motor and Generator Manufacturing | $14 million | — |
| 237110 | Water and Sewer Line and Related Structures Construction | $10.4 million | — |
| 236220 | Commercial and Institutional Building Construction | $2.3 million | — |
| 237130 | Power and Communication Line and Related Structures Construction | $411,797 | — |
Open contracts under each code, with any PSC: NAICS 237990 · NAICS 237310 · NAICS 335312 · NAICS 237110 · NAICS 236220 · NAICS 237130
Who buys under PSC Y1KA
Agencies with the most contract dollars under Y1KA over the last three fiscal years, per USAspending.gov. Each name links to that agency's open contracts and buying history:
| Agency | Obligated |
|---|---|
| Department of the Army | $2.9 billion |
| Bureau of Indian Affairs and Bureau of Indian Education | $26.6 million |
| Department of Veterans Affairs | $19.7 million |
| U.S. Fish and Wildlife Service | $10.2 million |
| National Park Service | $629,400 |
| Bureau of Land Management | $58,415 |
| Under Secretary for Farm and Foreign Agricultural Services | $22,470 |
| Bureau of Reclamation | $16,895 |
Federal spending under PSC Y1KA by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $1.5 billion |
| FY2025 | $408.4 million |
| FY2026 (incomplete) | $1.1 billion |
Headline figures use FY2025, the last complete year. FY2026 is still incomplete and will rise until about early January 2027 as Defense data arrives: USAspending.gov publishes Defense contracts 90 days after they're signed.
Who wins PSC Y1KA contracts
| Company | Obligated, last 3 years |
|---|---|
| Trumbull Corporation and Brayman Construction Corporation, a Joint Venture | $931.2 million |
| Kokosing Alberici Traylor, LLC | $592 million |
| Thalle - Bauer LLC | $379 million |
| Forgen-Odin JV | $276.5 million |
| J. F. Brennan Company, Inc. | $144.2 million |
| Occi, Inc. | $94.8 million |
| R. J. Zavoral & Sons, Inc. | $58.8 million |
| HSG Park Joint Venture 2, LLC | $43.1 million |
| Kiewit Infrastructure South Co | $35.5 million |
| Brayman Construction Corp | $33.3 million |
Linked names have a FedReady profile, which shows the NAICS codes a business is registered as small under. Most large companies have none.
Large prime contractors (companies that hold the contract with the agency) subcontract part of their work to small businesses. See which primes subcontract, by NAICS code.
Research PSC Y1KA work
By the NAICS codes this work goes with, the one with the most spending first: who won recently, contracts ending soon, agencies' planned buys and the large primes that subcontract it, nationwide. Each code shows only the pages that exist for it:
- 237990 Other Heavy and Civil Engineering Construction: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
- 237310 Highway, Street, and Bridge Construction: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
- 335312 Motor and Generator Manufacturing: who won recently · contracts ending in the next 12 months · planned buys · large primes that subcontract
Related PSC codes
- Y111 Construction of Office Buildings
- Y112 Construct/Conf Space & Fac
- Y119 Construct/Other Admin & SVCS BLDGS
- Y121 Construct/Air Traffic Cont Towers
- Y122 Construct/Air Traffic Training Fac
- Y123 Construct/Radar & Navigational Fac
- Y124 Construction of Airport Runways
- Y125 Construction of Airport Terminals
- Y126 Construct/Missile System Facilities
- Y127 Construct/Elct & Comm System Fac
Frequently asked questions
What is PSC Y1KA?
Y1KA is the service code in the federal Product and Service Code (PSC) Manual named “Construction of Dams”, under Y (Construct of Structures/Facilities) and Y1 (Construction of Buildings). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC Y1KA?
Most federal contract dollars under PSC Y1KA go with NAICS 237990 (Other Heavy and Civil Engineering Construction), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC Y1KA?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 1 open notice uses PSC Y1KA right now. FedReady can match new ones to your business and email you, free.
Keep going
Sources: SAM.gov Contract Opportunities, USAspending.gov and the PSC Manual. How we count.