Top 43 Contractors in PSC Z1KF: Maintenance of Dredging Facilities, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Great Lakes Dredge & Dock Corporation Top agencies Army (Department of the Army)	$229,317,684	25.5%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Peter Kiewit Sons', Inc. Through Weeks Marine, Inc. Top agencies Army (Department of the Army)	$75,282,899	8.4%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Curtin Maritime Corp Top agencies Army (Department of the Army) Navy (Department of the Navy)	$73,773,459	8.2%	Rank history: #34 in FY2021, #7 in FY2022, #5 in FY2023 and #12 in FY2024; up 9 since FY2024.
4	Norfolk Dredging Company Top agencies Army (Department of the Army)	$68,311,711	7.6%	Rank history: #1 in FY2021, #2 in FY2022, #2 in FY2023 and #10 in FY2024; up 6 since FY2024.
5	Cashman Dredging & Marine Contracting Co LLC Top agencies Army (Department of the Army)	$64,371,175	7.2%	Rank history: not on the FY2021–FY2024 lists; new.
6	Donjon Marine Co., LLC Top agencies Army (Department of the Army)	$61,776,670	6.9%	Rank history: not on the FY2021–FY2024 lists; new.
7	Cottrell Contracting Corporation Top agencies Army (Department of the Army)	$53,312,374	5.9%	Rank history: #7 in FY2021, #11 in FY2022, #11 in FY2023 and #3 in FY2024; down 4 since FY2024.
8	Southwind Construction Corp. Top agencies Army (Department of the Army)	$26,357,504	2.9%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2024; up 39 since FY2024.
9	Manson Construction Co Top agencies Army (Department of the Army)	$24,990,609	2.8%	Rank history: #15 in FY2021, #5 in FY2022, #10 in FY2023 and #5 in FY2024; down 4 since FY2024.
10	Ohishi Construction Co. Ltd Top agencies Navy (Department of the Navy)	$21,445,766	2.4%	Rank history: #8 in FY2021, #18 in FY2022, not on the FY2023 list and #32 in FY2024; up 22 since FY2024.
11	Marinex Construction Inc. Top agencies Army (Department of the Army)	$18,722,580	2.1%	Rank history: #4 in FY2021, #3 in FY2022, #3 in FY2023 and #33 in FY2024; up 22 since FY2024.
12	The Dutra Group Top agencies Army (Department of the Army)	$17,296,389	1.9%	Rank history: #3 in FY2021, #29 in FY2022, #9 in FY2023 and #14 in FY2024; up 2 since FY2024.
13	Eastman Aggregate Enterprises LLC Top agencies Army (Department of the Army)	$14,974,541	1.7%	Rank history: not on the FY2021–FY2024 lists; new.
14	Western Marine Construction, Inc. Top agencies Army (Department of the Army)	$12,347,000	1.4%	Rank history: #32 in FY2021, not on the FY2022–FY2023 lists and #8 in FY2024; down 6 since FY2024.
15	Evco Development LLC Top agencies Army (Department of the Army)	$11,702,253	1.3%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023 and #49 in FY2024; up 34 since FY2024.
16	Inland Dredging Company, L.L.C. Top agencies Army (Department of the Army)	$10,964,234	1.2%	Rank history: not on the FY2021–FY2024 lists; new.
17	Kokosing Industrial Inc. Top agencies Army (Department of the Army)	$10,180,320	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
18	Ahtna Marine & Construction Company, LLC Top agencies Army (Department of the Army)	$4,546,090	0.5%	Rank history: #10 in FY2021, #13 in FY2022, #31 in FY2023 and #18 in FY2024; unchanged since FY2024.
19	Amherst Madison, Inc. Top agencies Army (Department of the Army)	$4,471,408	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
20	Alaska Marine Excavation LLC Top agencies Army (Department of the Army)	$4,243,593	0.5%	Rank history: #28 in FY2021, #25 in FY2022, not on the FY2023 list and #50 in FY2024; up 30 since FY2024.
21	Southern Dredging Co Inc. Top agencies Army (Department of the Army)	$3,944,704	0.4%	Rank history: #20 in FY2021, #8 in FY2022, #18 in FY2023 and #13 in FY2024; down 8 since FY2024.
22	H & L Contracting LLC Top agencies Army (Department of the Army)	$3,827,805	0.4%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; up 13 since FY2024.
23	US Aqua Services LLC Top agencies Army (Department of the Army)	$2,783,000	0.3%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and not on the FY2024 list; returned.
24	Galvin Bros & Madhue Contracting JV Top agencies DHS (Department of Homeland Security)	$2,505,220	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
25	C. Abbonizio Contractors, Inc. Top agencies Army (Department of the Army)	$1,647,053	0.2%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; down 9 since FY2024.
26	Chesterfield Associates Inc. Top agencies DHS (Department of Homeland Security)	$1,608,230	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
27	G.c. Environmental and Trucking LLC Top agencies Army (Department of the Army)	$1,490,000	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
28	Muddy Water Dredging, LP Top agencies Army (Department of the Army)	$1,429,000	0.2%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; down 13 since FY2024.
29	Healy Tibbitts Builders, Inc. Top agencies Army (Department of the Army)	$1,222,257	0.1%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2024; up 14 since FY2024.
30	Orion Marine Construction, Inc. Top agencies Army (Department of the Army)	$888,849	0.1%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; down 21 since FY2024.
31	Bergerson Construction Inc Top agencies DHS (Department of Homeland Security)	$569,680	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
32	Better By Design LLC Top agencies Army (Department of the Army)	$504,095	0.1%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and not on the FY2024 list; returned.
33	WSP USA Environment & Infrastructure Inc. Top agencies DHS (Department of Homeland Security)	$439,304	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
34	AECOM Technical Services, Inc. Top agencies Army (Department of the Army)	$380,921	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
35	Aqua Survey, Inc. Top agencies Army (Department of the Army)	$235,880	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
36	Battelle Memorial Institute Top agencies Army (Department of the Army)	$151,628	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
37	Lucianos Excavation Inc Top agencies Army (Department of the Army)	$131,872	<0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2024; down 3 since FY2024.
38	Herve Cody Contractor LLC Top agencies Army (Department of the Army)	$23,389	<0.1%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 21 since FY2024.
39	Coastal Dredging Co, Inc. Top agencies Army (Department of the Army)	$20,000	<0.1%	Rank history: #31 in FY2021 and not on the FY2022–FY2024 lists; returned.
40	AGM Marine Contractors Inc. Top agencies Army (Department of the Army)	$20,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
41	Atlantic & Gulf Dredging & Marine LLC Top agencies Army (Department of the Army)	$20,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
42	Next Generation Logistics, LLC Top agencies Army (Department of the Army)	$20,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; down 19 since FY2024.
43	Marco Federal Services LLC Top agencies Army (Department of the Army)	$4,424	<0.1%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2024; down 12 since FY2024.

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 $899 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.
• Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2024. "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. The step from FY2024 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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