Top 25 Contractors in PSC Z1KB: Maintenance of Canals, Jul 2025–Jun 2026
Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe
The top 10 won 91% of PSC Z1KB contract dollars from July 2025 through June 2026
Ranking facts
- Contract obligations
- $323,845,694 Net of deobligations, by contracts coded PSC Z1KB
- Contractors
- 27 Parent companies with an obligation
- Largest contractor
- Orion Marine Construction, Inc. $113 million, 32.9% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 25 rows as CSV
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $113,143,758 | |||
| 2 |
Peter Kiewit Sons', Inc.
Top agencies
|
$69,728,849 | ||
| 3 |
Curtin Maritime Corp
Top agencies
|
$30,155,878 | ||
| 4 |
Mike Hooks, LLC
Top agencies
|
$28,885,389 | ||
| 5 |
The Dutra Group
Top agencies
|
$25,739,000 | ||
| 6 |
Callan Marine Limited
Top agencies
|
$21,027,188 | ||
| 7 | $10,406,796 | |||
| 8 |
Mcmillen, Inc.
Top agencies
|
$7,161,200 | ||
| 9 |
Genesis 360 LLC
Top agencies
|
$4,021,312 | ||
| 10 |
Maverick Constructors, LLC
Top agencies
|
$4,002,260 | ||
| 11 | $3,780,000 | |||
| 12 |
Weeks Marine, Inc.
Top agencies
|
$3,110,152 | ||
| 13 |
Mohawk Valley Materials Inc.
Top agencies
|
$2,827,116 | ||
| 14 |
Western Contracting Corp
Top agencies
|
$2,619,720 | ||
| 15 | $1,355,624 | |||
| 16 |
Breakwater Marine Construction, LLC
Top agencies
|
$374,959 | ||
| 17 | $340,792 | |||
| 18 | $218,994 | |||
| 19 | $184,156 | |||
| 20 |
County of Teton
Top agencies
|
$122,565 | ||
| 21 |
Legacy Corporation of IL
Top agencies
|
$25,889 | ||
| 22 |
Miller Environmental Inc.
Top agencies
|
$10,200 | ||
| 23 |
Midwest Construction Co
Top agencies
|
$3,000 | ||
| 24 | $3,000 | |||
| 25 |
W A Ellis Construction Co.
Top agencies
|
$3,000 |
25 of 27 contractors listed here. See the rest on GovTribe.
How this ranking works
- Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
- Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $344 million obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Jul 2024–Jun 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
- Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
- Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.
Quick answers
Who were the top 10 PSC Z1KB contractors in Jul 2025–Jun 2026?
1. Orion Marine Construction, Inc. ($113M), 2. Peter Kiewit Sons', Inc. ($69.7M), 3. Curtin Maritime Corp ($30.2M), 4. Mike Hooks, LLC ($28.9M), 5. The Dutra Group ($25.7M), 6. Callan Marine Limited ($21M), 7. Inland Dredging Company, L.L.C. ($10.4M), 8. Mcmillen, Inc. ($7.16M), 9. Genesis 360 LLC ($4.02M), 10. Maverick Constructors, LLC ($4M).
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