Top 100 Contractors in NAICS 237: Heavy and Civil Engineering Construction, FY2023

Name: Top 100 Contractors in NAICS 237: 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 24% of FY2023 NAICS 237 contract dollars

Contract obligations: $14,313,125,358 Net of deobligations, by contracts coded NAICS 237 or a code under it
Contractors: 2,528 Parent companies with an obligation
Largest contractor: Great Lakes Dredge & Dock Corporation $532 million, 3.5% 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	3.5%	Rank history: #1 in FY2021, #5 in FY2022, #4 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	3.0%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2024 and #1 in FY2025; new.
3	381 Constructors Top agencies Navy (Department of the Navy)	$444,707,710	2.9%	Rank history: #29 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	2.5%	Rank history: #8 in FY2021, #6 in FY2022, #7 in FY2024 and #7 in FY2025; up 2 since FY2022.
5	Peter Kiewit Sons', Inc. 7 awardees, including Kiewit Infrastructure West Co., Weeks Marine, Inc. and Kiewit Infrastructure Co. Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$370,352,498	2.4%	Rank history: #4 in FY2021, #16 in FY2022, #3 in FY2024 and #2 in FY2025; up 11 since FY2022.
6	Kiewit-Alberici Siop Macc AJV Top agencies Navy (Department of the Navy)	$325,673,120	2.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #10 in FY2025; new.
7	Granite Construction Company Guam Through Granite Construction Company Top agencies Army (Department of the Army) DOT (Department of Transportation)	$315,540,727	2.1%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2024 and #71 in FY2025; new.
8	Black Micro Corporation Top agencies Navy (Department of the Navy)	$291,215,393	1.9%	Rank history: not on the FY2021 list, #67 in FY2022, #47 in FY2024 and not on the FY2025 list; up 59 since FY2022.
9	Kokosing Alberici Traylor, LLC Top agencies Army (Department of the Army)	$276,349,913	1.8%	Rank history: not on the FY2021 list, #1 in FY2022, #6 in FY2024 and #23 in FY2025; down 8 since FY2022.
10	The Dutra Group 2 awardees, including San Rafael Rock Quarry, Inc. Top agencies Army (Department of the Army)	$242,906,647	1.6%	Rank history: #7 in FY2021, #48 in FY2022, #21 in FY2024 and #40 in FY2025; up 38 since FY2022.
11	Stronghold Engineering Inc. Top agencies DOI (Department of the Interior)	$212,262,277	1.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
12	Callan Marine Ltd Top agencies Army (Department of the Army)	$210,758,032	1.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
13	Forgen-Odin JV Top agencies Army (Department of the Army)	$183,952,314	1.2%	Rank history: not on the FY2021 list, #4 in FY2022, not on the FY2024 list and #73 in FY2025; down 9 since FY2022.
14	A&R Pacific-Garney Federal JV Top agencies Navy (Department of the Navy)	$154,885,880	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
15	Rq-Magann JV Top agencies Navy (Department of the Navy)	$144,279,121	0.9%	Rank history: not on the FY2021 list, #34 in FY2022, #33 in FY2024 and not on the FY2025 list; up 19 since FY2022.
16	H2O Guam JV Top agencies Navy (Department of the Navy)	$138,452,704	0.9%	Rank history: #14 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
17	Norfolk Dredging Company Top agencies Army (Department of the Army) Navy (Department of the Navy)	$136,325,550	0.9%	Rank history: #17 in FY2021, #14 in FY2022, #35 in FY2024 and #19 in FY2025; down 3 since FY2022.
18	Appalachian Aggregates LLC 5 awardees, including H-K Contractors, Inc. and Staker & Parson Companies Top agencies DOT (Department of Transportation)	$126,394,883	0.8%	Rank history: not on the FY2021 list, #28 in FY2022, #91 in FY2024 and not on the FY2025 list; up 10 since FY2022.
19	The Cianbro Companies Through Cianbro Corporation Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$122,984,340	0.8%	Rank history: #25 in FY2021, #32 in FY2022, #24 in FY2024 and not on the FY2025 list; up 13 since FY2022.
20	Construction Management Resources Inc. Through Wagman Heavy Civil Inc. Top agencies DOT (Department of Transportation)	$122,777,776	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
21	Turner Construction Company 2 awardees, including Flatiron Dragados Constructors, Inc. and Sociedad Espanola De Montajes Industriales SA Top agencies Army (Department of the Army) DOT (Department of Transportation) USAF (Department of the Air Force)	$122,448,716	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
22	Gilbane Federal Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$121,944,015	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Andritz AG Through Andritz Hydro Corp Top agencies Army (Department of the Army) DOI (Department of the Interior)	$118,743,875	0.8%	Rank history: #12 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 186 since FY2022.
24	B & K Construction Co L.l.c Top agencies Army (Department of the Army)	$115,070,572	0.8%	Rank history: #34 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
25	Folsom Dam Constructors Top agencies Army (Department of the Army)	$114,160,416	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
26	Bcss, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOI (Department of the Interior)	$98,266,993	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 96 since FY2022.
27	The Walsh Group 3 awardees, including Archer Western Construction LLC and Archer Western Federal JV Top agencies Army (Department of the Army) DOI (Department of the Interior) Navy (Department of the Navy)	$95,843,163	0.6%	Rank history: #79 in FY2021, #22 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
28	Odin Environmental Solutions, LLC Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico) Army (Department of the Army)	$94,475,990	0.6%	Rank history: not on the FY2021 list, #73 in FY2022 and not on the FY2024–FY2025 lists; up 45 since FY2022.
29	LPC Contractors Inc. Top agencies DOT (Department of Transportation)	$93,108,136	0.6%	Rank history: not on the FY2021 list, #97 in FY2022 and not on the FY2024–FY2025 lists; up 68 since FY2022.
30	Dynamic Construction Group LLC Through Dynamic Group, LLC Top agencies Army (Department of the Army)	$88,466,872	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
31	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	0.5%	Rank history: #5 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
32	Onshore Materials, L.L.C. Top agencies Army (Department of the Army)	$83,065,601	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 288 since FY2022.
33	Donjon Marine Co., LLC Top agencies Army (Department of the Army)	$77,492,278	0.5%	Rank history: #20 in FY2021, #30 in FY2022, #46 in FY2024 and #33 in FY2025; down 3 since FY2022.
34	Encore Dredging Founding Partners LLC Through Inland Dredging Company, L.L.C. Top agencies Army (Department of the Army)	$75,327,088	0.5%	Rank history: #28 in FY2021, #46 in FY2022, #40 in FY2024 and not on the FY2025 list; up 12 since FY2022.
35	Steve Manning Construction Inc. Top agencies DOT (Department of Transportation)	$74,832,255	0.5%	Rank history: not on the FY2021 list, #72 in FY2022, #84 in FY2024 and #53 in FY2025; up 37 since FY2022.
36	Pine Bluff Sand and Gravel Company Top agencies Army (Department of the Army)	$68,864,898	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 76 since FY2022.
37	Maloney-Odin A Joint Venture Top agencies Army (Department of the Army) DOI (Department of the Interior)	$68,022,364	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
38	S.j. Louis Construction, Inc. Top agencies DOI (Department of the Interior)	$67,314,613	0.4%	Rank history: not on the FY2021 list, #33 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
39	Mcmillen LLC Top agencies Army (Department of the Army) DOI (Department of the Interior)	$67,194,445	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 155 since FY2022.
40	Herve Cody Contractor LLC Top agencies Army (Department of the Army)	$65,669,133	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
41	Marinex Construction Inc. Top agencies Army (Department of the Army)	$64,855,379	0.4%	Rank history: #87 in FY2021, #80 in FY2022, #87 in FY2024 and not on the FY2025 list; up 39 since FY2022.
42	Nova Group Inc. 3 awardees, including Northern Powerline Constructors, Inc. and Summit Line Construction, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$64,677,112	0.4%	Rank history: #95 in FY2021, #51 in FY2022, #86 in FY2024 and not on the FY2025 list; up 9 since FY2022.
43	Aptim Federal Services LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$63,583,131	0.4%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2024 and not on the FY2025 list; new.
44	Mclean Contracting Company Top agencies Navy (Department of the Navy)	$63,190,700	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
45	Luhr Crosby, LLC Top agencies Army (Department of the Army)	$61,754,544	0.4%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2024 and #56 in FY2025; up 90 since FY2022.
46	Trade West Construction, Inc. Top agencies Army (Department of the Army)	$61,191,434	0.4%	Rank history: not on the FY2021 list, #37 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
47	Nova Constructors-Obayashi JV Top agencies Army (Department of the Army)	$60,516,346	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
48	Southwest Concrete Paving Co Top agencies Navy (Department of the Navy)	$59,830,000	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
49	Komada LLC Top agencies DOI (Department of the Interior)	$58,335,000	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
50	SES Constructors LLC Top agencies Army (Department of the Army)	$58,274,852	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
51	BWI Tpc, A Joint Venture Top agencies DOI (Department of the Interior)	$56,854,529	0.4%	Rank history: not on the FY2021 list, #20 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.
52	NW Construction, Inc. Top agencies DOI (Department of the Interior)	$54,748,917	0.4%	Rank history: not on the FY2021 list, #21 in FY2022, #26 in FY2024 and #11 in FY2025; down 31 since FY2022.
53	MEB General Contractors Inc. Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command) Army (Department of the Army)	$54,309,317	0.4%	Rank history: not on the FY2021 list, #26 in FY2022, #23 in FY2024 and #79 in FY2025; down 27 since FY2022.
54	Curtin Maritime Corp Top agencies Army (Department of the Army)	$53,648,314	0.4%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2024 list and #21 in FY2025; up 45 since FY2022.
55	Mitchell Brothers Inc. Top agencies Army (Department of the Army)	$53,292,312	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	Bristol Bay Native Corporation 5 awardees, including Panhandle Power Solutions LLC, Bristol Engineering Services Company, LLC and SES Infrastructure Services LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$52,728,042	0.3%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2024 and not on the FY2025 list; new.
57	SGC Services 2, LLC Top agencies VA (Department of Veterans Affairs)	$52,043,413	0.3%	Rank history: #65 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
58	Sauer Holdings Inc. Through Sauer Construction, LLC Top agencies Navy (Department of the Navy)	$51,937,661	0.3%	Rank history: #37 in FY2021, #95 in FY2022 and not on the FY2024–FY2025 lists; up 37 since FY2022.
59	Cashman Dredging and Marine Contracting Co. LLC Top agencies Army (Department of the Army)	$50,941,749	0.3%	Rank history: #59 in FY2021, #57 in FY2022, #93 in FY2024 and not on the FY2025 list; down 2 since FY2022.
60	Brice HGL JV LLC Through Brice Builders, LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$50,043,969	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
61	Slayden Constructors Inc Top agencies Army (Department of the Army)	$48,243,000	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	Apogee Group, LLC Top agencies DOE (Department of Energy)	$48,049,108	0.3%	Rank history: #69 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 43 since FY2022.
63	Michels Construction, Inc. Top agencies Army (Department of the Army)	$47,131,876	0.3%	Rank history: not on the FY2021 list, #60 in FY2022, not on the FY2024 list and #57 in FY2025; down 3 since FY2022.
64	NH1 JV Top agencies USAF (Department of the Air Force)	$46,661,484	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	TOA Corporation 2 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy)	$46,287,775	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 86 since FY2022.
66	Mike Hooks, LLC Top agencies Army (Department of the Army)	$44,402,652	0.3%	Rank history: #49 in FY2021, #25 in FY2022, #64 in FY2024 and #47 in FY2025; down 41 since FY2022.
67	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	0.3%	Rank history: #85 in FY2021, not on the FY2022 list, #50 in FY2024 and #32 in FY2025; up 176 since FY2022.
68	Wagner Construction, Inc. Top agencies DOT (Department of Transportation)	$41,494,146	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
69	Sgjv2, LLC Top agencies VA (Department of Veterans Affairs)	$41,290,000	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
70	Coffman Specialties, Inc. Top agencies Navy (Department of the Navy)	$40,996,248	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
71	Orion Marine Group Inc. 4 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)	$40,846,555	0.3%	Rank history: #47 in FY2021, #41 in FY2022 and not on the FY2024–FY2025 lists; down 30 since FY2022.
72	Cottrell Contracting Corporation Top agencies Army (Department of the Army)	$40,600,441	0.3%	Rank history: #80 in FY2021, #68 in FY2022, #44 in FY2024 and #41 in FY2025; down 4 since FY2022.
73	Crosby Dredging LLC Top agencies Army (Department of the Army)	$39,945,587	0.3%	Rank history: #56 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 40 since FY2022.
74	AECOM 2 awardees, including Shimmick Construction Company, Inc. and AECOM Technical Services, Inc. Top agencies Army (Department of the Army)	$39,567,811	0.3%	Rank history: #45 in FY2021, #65 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
75	Reliable Contracting Group, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$38,924,091	0.3%	Rank history: #52 in FY2021, not on the FY2022 list, #70 in FY2024 and #35 in FY2025; up 39 since FY2022.
76	Nordic Industries Inc. Top agencies Army (Department of the Army)	$38,474,405	0.3%	Rank history: #57 in FY2021, #71 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
77	Wood Environment & Infrastructure Solutions Inc. Through WSP USA Environment & Infrastructure Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$38,369,719	0.3%	Rank history: #46 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 53 since FY2022.
78	Tybe-Garney Federal JV LLC Top agencies Navy (Department of the Navy)	$38,134,761	0.3%	Rank history: not on the FY2021 list, #49 in FY2022 and not on the FY2024–FY2025 lists; down 29 since FY2022.
79	Five-S Group, L.L.C. Top agencies Army (Department of the Army)	$37,910,732	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	C & C Contractors LLC Top agencies VA (Department of Veterans Affairs)	$37,624,826	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #64 in FY2025; up 229 since FY2022.
81	Sealaska Corporation Through Sealaska Construction Solutions, LLC Top agencies Army (Department of the Army)	$37,522,928	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
82	Estes Bros. Const. Inc. Top agencies DOT (Department of Transportation) DOI (Department of the Interior)	$37,384,859	0.2%	Rank history: #30 in FY2021, #59 in FY2022, #45 in FY2024 and #61 in FY2025; down 23 since FY2022.
83	Derian / Occ, A Joint Venture Top agencies Army (Department of the Army)	$35,798,190	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Abhe & Svoboda, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$35,673,247	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 313 since FY2022.
85	Winnebago Tribe of Nebraska Through HCI Management Services Company Top agencies DOS (Department of State)	$35,500,000	0.2%	Rank history: #62 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 104 since FY2022.
86	OCI Overseas Holding Limited Through Contrack Watts Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$35,411,719	0.2%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2024 and #15 in FY2025; new.
87	PCC Ventures Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$35,340,953	0.2%	Rank history: not on the FY2021 list, #77 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
88	Golden Triangle Construction Co Inc. Top agencies Army (Department of the Army)	$35,086,000	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	Jacobs Engineering Group Inc. 2 awardees, including Jacobs Project Management Co. Top agencies Army (Department of the Army)	$35,002,512	0.2%	Rank history: not on the FY2021 list, #88 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
90	Great Lakes Dock and Materials, L.L.C. Top agencies Army (Department of the Army)	$34,199,521	0.2%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2024 and not on the FY2025 list; up 163 since FY2022.
91	Flatiron-Dragados-Sukut Joint Venture Top agencies Army (Department of the Army)	$33,311,074	0.2%	Rank history: #73 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 16 since FY2022.
92	Las Vegas Paving Corporation Top agencies DOT (Department of Transportation)	$32,574,602	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Midwest Construction Co Top agencies Army (Department of the Army)	$32,196,033	0.2%	Rank history: #53 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; down 37 since FY2022.
94	Herback General Engineering LLC Top agencies DOT (Department of Transportation)	$31,954,075	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 140 since FY2022.
95	Hsgs-Ameresco, LLC Top agencies USAF (Department of the Air Force)	$31,546,692	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	Blue World Construction Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$30,895,403	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Brice Civil Constructors, Inc. Top agencies Army (Department of the Army) DOT (Department of Transportation) USDA (Department of Agriculture)	$30,284,344	0.2%	Rank history: not on the FY2021 list, #100 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
98	Wendler, Inc. Top agencies Army (Department of the Army)	$30,273,943	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 216 since FY2022.
99	Advanced American Construction, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$29,896,995	0.2%	Rank history: not on the FY2021 list, #47 in FY2022, not on the FY2024 list and #87 in FY2025; down 52 since FY2022.
100	Hawk-Niking LLC Top agencies Army (Department of the Army)	$29,773,322	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 2,528 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 237

Code	Net obligations	Largest contractor
2379 Other Heavy and Civil Engineering Construction	$9,134,684,042	Great Lakes Dredge & Dock Corporation
2373 Highway, Street, and Bridge Construction	$2,796,994,416	Peter Kiewit Sons', Inc.
2371 Utility System Construction	$2,381,146,974	Stronghold Engineering Inc.

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 $15.2 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 237 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. Peter Kiewit Sons', Inc. ($370M), 6. Kiewit-Alberici Siop Macc AJV ($326M), 7. Granite Construction Company Guam ($316M), 8. Black Micro Corporation ($291M), 9. Kokosing Alberici Traylor, LLC ($276M), 10. The Dutra Group ($243M).

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