Top 100 Contractors in NAICS 23799: Other Heavy and Civil Engineering Construction, FY2023

Name: Top 100 Contractors in NAICS 23799: Other Heavy and Civil Engineering Construction, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 34% of FY2023 NAICS 23799 contract dollars

Contract obligations: $9,134,684,042 Net of deobligations, by contracts coded NAICS 23799 or a code under it
Contractors: 893 Parent companies with an obligation
Largest contractor: Great Lakes Dredge & Dock Corporation $532 million, 5.5% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Great Lakes Dredge & Dock Corporation 2 awardees, including Forgen LLC Top agencies Army (Department of the Army)	$531,522,766	5.5%	Rank history: #1 in FY2021, #5 in FY2022, #3 in FY2024 and #6 in FY2025; up 4 since FY2022.
2	Dragados / Hawaiian Dredging / Orion JV Top agencies Navy (Department of the Navy)	$463,600,000	4.8%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2024 and #1 in FY2025; up 287 since FY2022.
3	381 Constructors Top agencies Navy (Department of the Navy)	$444,707,710	4.6%	Rank history: #25 in FY2021, #2 in FY2022, #5 in FY2024 and #5 in FY2025; down 1 since FY2022.
4	Manson Construction Co. Top agencies Army (Department of the Army) Commerce (Department of Commerce) USDA (Department of Agriculture)	$378,714,038	3.9%	Rank history: #8 in FY2021, #6 in FY2022, #7 in FY2024 and #7 in FY2025; up 2 since FY2022.
5	Kiewit-Alberici Siop Macc AJV Top agencies Navy (Department of the Navy)	$325,673,120	3.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #10 in FY2025; up 273 since FY2022.
6	Kokosing Alberici Traylor, LLC Top agencies Army (Department of the Army)	$276,349,913	2.9%	Rank history: not on the FY2021 list, #1 in FY2022, #6 in FY2024 and #18 in FY2025; down 5 since FY2022.
7	The Dutra Group 2 awardees, including San Rafael Rock Quarry, Inc. Top agencies Army (Department of the Army)	$242,906,647	2.5%	Rank history: #7 in FY2021, #38 in FY2022, #14 in FY2024 and #27 in FY2025; up 31 since FY2022.
8	Granite Construction Company Guam Through Granite Construction Company Top agencies Army (Department of the Army)	$221,868,866	2.3%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2024 and #67 in FY2025; new.
9	Callan Marine Ltd Top agencies Army (Department of the Army)	$210,758,032	2.2%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2024 and not on the FY2025 list; up 257 since FY2022.
10	Forgen-Odin JV Top agencies Army (Department of the Army)	$183,952,314	1.9%	Rank history: not on the FY2021 list, #4 in FY2022, #85 in FY2024 and #47 in FY2025; down 6 since FY2022.
11	Rq-Magann JV Top agencies Navy (Department of the Navy)	$144,279,121	1.5%	Rank history: not on the FY2021 list, #23 in FY2022, #24 in FY2024 and #75 in FY2025; up 12 since FY2022.
12	Peter Kiewit Sons', Inc. 6 awardees, including Weeks Marine, Inc., Kiewit Infrastructure West Co and Kiewit Infrastructure South Co Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$139,475,796	1.4%	Rank history: #5 in FY2021, not on the FY2022 list, #4 in FY2024 and #2 in FY2025; returned.
13	H2O Guam JV Top agencies Navy (Department of the Navy)	$138,452,704	1.4%	Rank history: #12 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
14	Norfolk Dredging Company Top agencies Army (Department of the Army) Navy (Department of the Navy)	$136,325,550	1.4%	Rank history: #15 in FY2021, #12 in FY2022, #26 in FY2024 and #14 in FY2025; down 2 since FY2022.
15	Gilbane Federal Top agencies Navy (Department of the Navy)	$118,448,339	1.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
16	Andritz AG Through Andritz Hydro Corp Top agencies Army (Department of the Army) DOI (Department of the Interior)	$118,115,373	1.2%	Rank history: #13 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 109 since FY2022.
17	B & K Construction Co L.l.c Top agencies Army (Department of the Army)	$115,070,572	1.2%	Rank history: #27 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 340 since FY2022.
18	Folsom Dam Constructors Top agencies Army (Department of the Army)	$114,160,416	1.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
19	The Cianbro Companies Through Cianbro Corporation Top agencies DOI (Department of the Interior)	$112,760,000	1.2%	Rank history: #21 in FY2021, #22 in FY2022, #15 in FY2024 and not on the FY2025 list; up 3 since FY2022.
20	Bcss, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOI (Department of the Interior)	$98,266,993	1.0%	Rank history: #93 in FY2021, #80 in FY2022 and not on the FY2024–FY2025 lists; up 60 since FY2022.
21	Odin Environmental Solutions, LLC Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico) Army (Department of the Army)	$94,475,990	1.0%	Rank history: not on the FY2021 list, #50 in FY2022 and not on the FY2024–FY2025 lists; up 29 since FY2022.
22	Turner Construction Company 2 awardees, including Flatiron Dragados Constructors, Inc. Top agencies Army (Department of the Army)	$94,162,608	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Dynamic Construction Group LLC Through Dynamic Group, LLC Top agencies Army (Department of the Army)	$88,466,872	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
24	Weeks Marine Inc. 3 awardees, including Healy Tibbitts Builders, Inc. Top agencies Army (Department of the Army) Commerce (Department of Commerce) DOI (Department of the Interior)	$83,715,091	0.9%	Rank history: #4 in FY2021, #13 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
25	Onshore Materials, L.L.C. Top agencies Army (Department of the Army)	$83,065,601	0.9%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2024 and not on the FY2025 list; up 153 since FY2022.
26	Donjon Marine Co., LLC Top agencies Army (Department of the Army)	$77,492,278	0.8%	Rank history: #17 in FY2021, #21 in FY2022, #33 in FY2024 and #23 in FY2025; down 5 since FY2022.
27	Encore Dredging Founding Partners LLC Through Inland Dredging Company, L.L.C. Top agencies Army (Department of the Army)	$75,327,088	0.8%	Rank history: #24 in FY2021, #36 in FY2022, #31 in FY2024 and not on the FY2025 list; up 9 since FY2022.
28	Pine Bluff Sand and Gravel Company Top agencies Army (Department of the Army)	$68,864,898	0.7%	Rank history: #53 in FY2021, #31 in FY2022, #29 in FY2024 and #31 in FY2025; up 3 since FY2022.
29	Maloney-Odin A Joint Venture Top agencies Army (Department of the Army) DOI (Department of the Interior)	$68,022,364	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
30	Mcmillen LLC Top agencies Army (Department of the Army) DOI (Department of the Interior)	$66,741,077	0.7%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2024 and #56 in FY2025; up 94 since FY2022.
31	Herve Cody Contractor LLC Top agencies Army (Department of the Army)	$65,669,133	0.7%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2024 and not on the FY2025 list; new.
32	Marinex Construction Inc. Top agencies Army (Department of the Army)	$64,855,379	0.7%	Rank history: #63 in FY2021, #54 in FY2022, #51 in FY2024 and #83 in FY2025; up 22 since FY2022.
33	Mclean Contracting Company Top agencies Navy (Department of the Navy)	$63,190,700	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 452 since FY2022.
34	Luhr Crosby, LLC Top agencies Army (Department of the Army)	$61,754,544	0.6%	Rank history: not on the FY2021 list, #85 in FY2022, #22 in FY2024 and #37 in FY2025; up 51 since FY2022.
35	Trade West Construction, Inc. Top agencies Army (Department of the Army)	$61,191,434	0.6%	Rank history: not on the FY2021 list, #26 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
36	Komada LLC Top agencies DOI (Department of the Interior)	$58,335,000	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	BWI Tpc, A Joint Venture Top agencies DOI (Department of the Interior)	$56,854,529	0.6%	Rank history: not on the FY2021 list, #16 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.
38	NW Construction, Inc. Top agencies DOI (Department of the Interior)	$54,748,917	0.6%	Rank history: not on the FY2021 list, #17 in FY2022, #17 in FY2024 and #11 in FY2025; down 21 since FY2022.
39	Curtin Maritime Corp Top agencies Army (Department of the Army)	$53,648,314	0.6%	Rank history: #96 in FY2021, #64 in FY2022, #80 in FY2024 and #16 in FY2025; up 25 since FY2022.
40	SGC Services 2, LLC Top agencies VA (Department of Veterans Affairs)	$52,043,413	0.5%	Rank history: #49 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 370 since FY2022.
41	Sauer Holdings Inc. Through Sauer Construction, LLC Top agencies Navy (Department of the Navy)	$51,937,661	0.5%	Rank history: #29 in FY2021, #63 in FY2022, #89 in FY2024 and not on the FY2025 list; up 22 since FY2022.
42	Cashman Dredging and Marine Contracting Co. LLC Top agencies Army (Department of the Army)	$50,941,749	0.5%	Rank history: #45 in FY2021, #42 in FY2022, #54 in FY2024 and not on the FY2025 list; unchanged since FY2022.
43	MEB General Contractors Inc. Top agencies Navy (Department of the Navy)	$50,820,045	0.5%	Rank history: not on the FY2021 list, #32 in FY2022, #21 in FY2024 and not on the FY2025 list; down 11 since FY2022.
44	Brice HGL JV LLC Through Brice Builders, LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$50,043,969	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
45	Slayden Constructors Inc Top agencies Army (Department of the Army)	$48,243,000	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Apogee Group, LLC Top agencies DOE (Department of Energy)	$48,049,108	0.5%	Rank history: #52 in FY2021, #66 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
47	Michels Construction, Inc. Top agencies Army (Department of the Army)	$47,131,876	0.5%	Rank history: not on the FY2021 list, #43 in FY2022, not on the FY2024 list and #48 in FY2025; down 4 since FY2022.
48	Mike Hooks, LLC Top agencies Army (Department of the Army)	$44,402,652	0.5%	Rank history: #37 in FY2021, #19 in FY2022, #39 in FY2024 and #33 in FY2025; down 29 since FY2022.
49	General Electric Company Through GE Renewables US LLC Top agencies DOE (Department of Energy) DOI (Department of the Interior) Army (Department of the Army)	$43,163,026	0.4%	Rank history: #62 in FY2021, not on the FY2022 list, #34 in FY2024 and #21 in FY2025; up 91 since FY2022.
50	Orion Marine Group Inc. 3 awardees, including Orion Marine Construction, Inc., Orion Construction, LLC and Orion Government Services LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$40,876,415	0.4%	Rank history: #40 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
51	Cottrell Contracting Corporation Top agencies Army (Department of the Army)	$40,600,441	0.4%	Rank history: #57 in FY2021, #46 in FY2022, #32 in FY2024 and #28 in FY2025; down 5 since FY2022.
52	Crosby Dredging LLC Top agencies Army (Department of the Army)	$39,945,587	0.4%	Rank history: #42 in FY2021, #74 in FY2022 and not on the FY2024–FY2025 lists; up 22 since FY2022.
53	AECOM 2 awardees, including Shimmick Construction Company, Inc. and AECOM Technical Services, Inc. Top agencies Army (Department of the Army)	$39,567,811	0.4%	Rank history: #35 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
54	Nordic Industries Inc. Top agencies Army (Department of the Army)	$38,474,405	0.4%	Rank history: #43 in FY2021, #49 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
55	Five-S Group, L.L.C. Top agencies Army (Department of the Army)	$37,910,732	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	C & C Contractors LLC Top agencies VA (Department of Veterans Affairs)	$37,624,826	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #40 in FY2025; up 117 since FY2022.
57	Abhe & Svoboda, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$35,421,554	0.4%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2024 and not on the FY2025 list; up 185 since FY2022.
58	Jacobs Engineering Group Inc. 2 awardees, including Jacobs Project Management Co. Top agencies Army (Department of the Army)	$35,002,512	0.4%	Rank history: #70 in FY2021, #60 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
59	Great Lakes Dock and Materials, L.L.C. Top agencies Army (Department of the Army)	$34,199,521	0.4%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2024 and #74 in FY2025; up 94 since FY2022.
60	OCI Overseas Holding Limited Through Contrack Watts Inc. Top agencies Navy (Department of the Navy)	$33,970,697	0.4%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2024 and #45 in FY2025; new.
61	Flatiron-Dragados-Sukut Joint Venture Top agencies Army (Department of the Army)	$33,311,074	0.3%	Rank history: #55 in FY2021, #68 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
62	Midwest Construction Co Top agencies Army (Department of the Army)	$32,196,033	0.3%	Rank history: #39 in FY2021, #41 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.
63	Wendler, Inc. Top agencies Army (Department of the Army)	$30,273,943	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 112 since FY2022.
64	Advanced American Construction, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$29,896,995	0.3%	Rank history: not on the FY2021 list, #37 in FY2022, #61 in FY2024 and #58 in FY2025; down 27 since FY2022.
65	Luhr Bros., Inc. Top agencies Army (Department of the Army)	$29,344,244	0.3%	Rank history: #18 in FY2021, #34 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.
66	Evco Development LLC Top agencies Army (Department of the Army)	$29,304,053	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
67	Joseph B. FAY Co. Top agencies Army (Department of the Army)	$28,354,277	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
68	Morrish-Wallace Construction, Inc. Top agencies Army (Department of the Army)	$28,291,018	0.3%	Rank history: #46 in FY2021, #84 in FY2022, #64 in FY2024 and #73 in FY2025; up 16 since FY2022.
69	Dubuque Barge and Fleeting Service Co Top agencies Army (Department of the Army)	$27,561,498	0.3%	Rank history: #32 in FY2021, #89 in FY2022, #71 in FY2024 and #55 in FY2025; up 20 since FY2022.
70	General Constructors Inc. of the Quad Cities Top agencies Army (Department of the Army)	$26,876,660	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 36 since FY2022.
71	Phillips Infrastructure Holdings Inc. Through Phillips Heavy, Inc. Top agencies Army (Department of the Army)	$26,618,766	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 90 since FY2022.
72	T1-Rjs Joint Venture LLC Top agencies Army (Department of the Army)	$26,564,938	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Kokosing Inc. 2 awardees, including Kokosing Alberici, LLC and Kokosing Industrial Inc. Top agencies Army (Department of the Army)	$25,873,442	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
74	Kokosing Construction Company Inc. 3 awardees, including Construction Co Corman Kokosing and Kokosing Alberici, LLC Top agencies DOI (Department of the Interior) Army (Department of the Army)	$25,418,974	0.3%	Rank history: #78 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 282 since FY2022.
75	G.M. Johnson Companies Inc. Through Occi Inc. Top agencies Army (Department of the Army)	$25,369,965	0.3%	Rank history: #67 in FY2021, not on the FY2022 list, #41 in FY2024 and not on the FY2025 list; up 101 since FY2022.
76	Circle, LLC Top agencies Army (Department of the Army)	$24,889,745	0.3%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and not on the FY2025 list; new.
77	Port of Portland (INC) Top agencies Army (Department of the Army)	$24,814,326	0.3%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2024 and #46 in FY2025; new.
78	W A Ellis Construction Co. Top agencies Army (Department of the Army)	$24,184,385	0.3%	Rank history: not on the FY2021 list, #52 in FY2022 and not on the FY2024–FY2025 lists; down 26 since FY2022.
79	Triton Marine Construction Corp. Top agencies Navy (Department of the Navy)	$23,090,452	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #43 in FY2025; up 102 since FY2022.
80	Carbro Constructors Corp Top agencies Army (Department of the Army)	$22,624,073	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #44 in FY2025; up 302 since FY2022.
81	Dredgit Corporation Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$22,478,505	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 30 since FY2022.
82	Garco Construction, Inc. Top agencies DOI (Department of the Interior)	$22,011,605	0.2%	Rank history: #69 in FY2021, #86 in FY2022, #100 in FY2024 and #70 in FY2025; up 4 since FY2022.
83	J.f. Brennan Company, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$20,427,055	0.2%	Rank history: #28 in FY2021, #58 in FY2022, #20 in FY2024 and #49 in FY2025; down 25 since FY2022.
84	Tech2 Solutions Top agencies DOE (Department of Energy)	$20,398,646	0.2%	Rank history: #38 in FY2021, #65 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
85	Sealevel Construction Inc. Top agencies Army (Department of the Army)	$20,206,034	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	Rigid Constructors LLC Top agencies Army (Department of the Army)	$19,907,711	0.2%	Rank history: #20 in FY2021, #88 in FY2022, not on the FY2024 list and #57 in FY2025; up 2 since FY2022.
87	Mccormick Industrial Abatement Services, Inc. Top agencies Army (Department of the Army)	$19,736,716	0.2%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2024 and not on the FY2025 list; up 301 since FY2022.
88	David Boland Inc. Top agencies Army (Department of the Army)	$19,734,580	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	Apco Arcon LLC Top agencies USAID (US Agency for International Development)	$19,431,860	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
90	Aspen Construction Company Top agencies Army (Department of the Army)	$18,941,778	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 24 since FY2022.
91	Teya Enterprises LLC Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$18,476,724	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 46 since FY2022.
92	Ahtna-Brennan JV, LLC Top agencies Army (Department of the Army)	$18,086,264	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Ahtna Marine & Construction Company, LLC Top agencies Army (Department of the Army)	$17,792,572	0.2%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2024 and not on the FY2025 list; up 24 since FY2022.
94	Ahtna-Great Lakes E&I JV Top agencies Army (Department of the Army)	$17,417,586	0.2%	Rank history: #19 in FY2021, #48 in FY2022, not on the FY2024 list and #39 in FY2025; down 46 since FY2022.
95	Western Contracting Corp Top agencies Army (Department of the Army)	$17,298,180	0.2%	Rank history: #79 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; down 40 since FY2022.
96	Teichert-Odin, A Joint Venture Top agencies Army (Department of the Army)	$17,000,071	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 143 since FY2022.
97	Hawaii Harbors Constructors JV Top agencies Navy (Department of the Navy)	$16,950,100	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #13 in FY2025; new.
98	Nova Group Inc. Top agencies Navy (Department of the Navy)	$16,783,277	0.2%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2024 and not on the FY2025 list; up 22 since FY2022.
99	Granite Construction Incorporated Top agencies Army (Department of the Army)	$16,309,990	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 360 since FY2022.
100	Anderson Contracting LLC Top agencies Army (Department of the Army)	$16,155,211	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 893 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 23799

Code	Net obligations	Largest contractor
237990 Other Heavy and Civil Engineering Construction	$9,134,684,042	Great Lakes Dredge & Dock Corporation

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 $9.67 billion 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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.

Quick answers

Who were the top 10 NAICS 23799 contractors in FY2023?

1. Great Lakes Dredge & Dock Corporation ($532M), 2. Dragados / Hawaiian Dredging / Orion JV ($464M), 3. 381 Constructors ($445M), 4. Manson Construction Co. ($379M), 5. Kiewit-Alberici Siop Macc AJV ($326M), 6. Kokosing Alberici Traylor, LLC ($276M), 7. The Dutra Group ($243M), 8. Granite Construction Company Guam ($222M), 9. Callan Marine Ltd ($211M), 10. Forgen-Odin JV ($184M).

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