Top 100 Contractors in NAICS 237: Heavy and Civil Engineering Construction, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 237: Heavy and Civil Engineering Construction, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 33% of NAICS 237 contract dollars from July 2025 through June 2026

Contract obligations: $21,007,982,067 Net of deobligations, by contracts coded NAICS 237 or a code under it
Contractors: 2,204 Parent companies with an obligation
Largest contractor: Tully Construction Co - Thalle Construction Co LLC $2.02 billion, 8.2% 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	Tully Construction Co - Thalle Construction Co LLC Through Thalle Construction Co Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$2,015,701,445	8.2%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #8 in FY2025; up 5 since Jul 2024–Jun 2025.
2	Barnard Construction Company, Incorporated Top agencies Army (Department of the Army) USDA (Department of Agriculture) DOE (Department of Energy)	$1,354,357,127	5.5%	Rank history: not on the FY2021 list, #19 in FY2022, not on the FY2023 list, #96 in FY2024 and #14 in FY2025; up 10 since Jul 2024–Jun 2025.
3	Dragados / Hawaiian Dredging / Orion JV Top agencies Navy (Department of the Navy)	$1,217,557,570	5.0%	Rank history: not on the FY2021–FY2022 lists, #2 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since Jul 2024–Jun 2025.
4	Ferrovial Construccion PR, LLC Top agencies Army (Department of the Army)	$1,078,410,307	4.4%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
5	Kiewit-Alberici Siop Macc AJV Top agencies Navy (Department of the Navy)	$515,727,192	2.1%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023, not on the FY2024 list and #10 in FY2025; new, not ranked in Jul 2024–Jun 2025.
6	Peter Kiewit Sons', Inc. 6 awardees, including Kiewit Infrastructure South Co, Weeks Marine, Inc. and Kiewit Infrastructure Co. Top agencies USDA (Department of Agriculture) Army (Department of the Army) IBWC (International Boundary and Water Commission U.S.-Mexico)	$479,522,336	2.0%	Rank history: #4 in FY2021, #16 in FY2022, #5 in FY2023, #3 in FY2024 and #2 in FY2025; down 5 since Jul 2024–Jun 2025.
7	Pittman-Sealevel, L.L.C. Top agencies Army (Department of the Army)	$419,667,904	1.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
8	Kiewit Infrastructure West Co. Top agencies Army (Department of the Army)	$412,667,038	1.7%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #4 in FY2025; up 42 since Jul 2024–Jun 2025.
9	Thalle - Bauer LLC Top agencies Army (Department of the Army)	$378,160,240	1.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
10	Nan Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$330,561,904	1.3%	Rank history: not on the FY2021 list, #86 in FY2022, not on the FY2023 list, #72 in FY2024 and #9 in FY2025; up 17 since Jul 2024–Jun 2025.
11	Flatiron-Aecon Joint Venture Top agencies Army (Department of the Army)	$320,187,168	1.3%	Rank history: not on the FY2021–FY2025 lists; up 146 since Jul 2024–Jun 2025.
12	Manson Construction Co Top agencies Army (Department of the Army) Navy (Department of the Navy) Commerce (Department of Commerce)	$307,145,732	1.3%	Rank history: #8 in FY2021, #6 in FY2022, #4 in FY2023, #7 in FY2024 and #7 in FY2025; down 4 since Jul 2024–Jun 2025.
13	C.j. Mahan Construction Company, LLC Top agencies Army (Department of the Army)	$243,585,146	1.0%	Rank history: #33 in FY2021, not on the FY2022–FY2023 lists, #54 in FY2024 and #43 in FY2025; up 67 since Jul 2024–Jun 2025.
14	Forgen-Odin JV Top agencies Army (Department of the Army)	$234,107,975	1.0%	Rank history: not on the FY2021 list, #4 in FY2022, #13 in FY2023, not on the FY2024 list and #73 in FY2025; up 49 since Jul 2024–Jun 2025.
15	UEI UYPFKJ4EMJM9 6 awardees, including Kiewit Infrastructure West Co., Kiewit Infrastructure South Co and Weeks Marine, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army) Navy (Department of the Navy)	$223,811,896	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
16	Great Lakes Dredge & Dock Corporation Top agencies Army (Department of the Army)	$222,042,820	0.9%	Rank history: #1 in FY2021, #5 in FY2022, #1 in FY2023, #4 in FY2024 and #6 in FY2025; down 13 since Jul 2024–Jun 2025.
17	Core Tech-Hdcc-Kajima LLC Top agencies Navy (Department of the Navy)	$219,025,000	0.9%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Jul 2024–Jun 2025.
18	NW Construction, Inc. Top agencies DOI (Department of the Interior)	$215,670,745	0.9%	Rank history: not on the FY2021 list, #21 in FY2022, #52 in FY2023, #26 in FY2024 and #11 in FY2025; down 2 since Jul 2024–Jun 2025.
19	Hawaii Harbors Constructors JV Top agencies Navy (Department of the Navy)	$197,969,868	0.8%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; new, not ranked in Jul 2024–Jun 2025.
20	OCI Overseas Holding Limited Through Contrack Watts Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$193,856,941	0.8%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023, #99 in FY2024 and #15 in FY2025; up 56 since Jul 2024–Jun 2025.
21	MEB General Contractors Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$191,348,971	0.8%	Rank history: not on the FY2021 list, #26 in FY2022, #53 in FY2023, #23 in FY2024 and #79 in FY2025; up 41 since Jul 2024–Jun 2025.
22	J.f. Brennan Company, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$188,768,743	0.8%	Rank history: #36 in FY2021, #83 in FY2022, not on the FY2023 list, #29 in FY2024 and #74 in FY2025; up 10 since Jul 2024–Jun 2025.
23	Bfbc LLC Top agencies Army (Department of the Army)	$170,217,506	0.7%	Rank history: not on the FY2021 list, #12 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
24	381 Constructors Top agencies Navy (Department of the Navy)	$160,620,512	0.7%	Rank history: #29 in FY2021, #2 in FY2022, #3 in FY2023, #5 in FY2024 and #5 in FY2025; down 14 since Jul 2024–Jun 2025.
25	Amber Infrastructure LLC 4 awardees, including City Light & Power Jblm LLC, City Light & Power, Inc. and City Light & Power Aberdeen, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$158,872,356	0.6%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	Clark Construction LLC Through Clark Construction Group LLC Top agencies Army (Department of the Army)	$145,292,000	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
27	Alberici Constructors Inc Top agencies Army (Department of the Army)	$134,094,589	0.5%	Rank history: not on the FY2021 list, #64 in FY2022 and not on the FY2023–FY2025 lists; up 323 since Jul 2024–Jun 2025.
28	Ames Federal Contracting Group LLC Top agencies DOI (Department of the Interior)	$132,400,052	0.5%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; down 6 since Jul 2024–Jun 2025.
29	Record Steel and Construction, Inc. Top agencies DOI (Department of the Interior)	$130,136,932	0.5%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 29 since Jul 2024–Jun 2025.
30	Norfolk Dredging Company Top agencies Army (Department of the Army)	$129,588,095	0.5%	Rank history: #17 in FY2021, #14 in FY2022, #17 in FY2023, #35 in FY2024 and #19 in FY2025; down 11 since Jul 2024–Jun 2025.
31	The Dutra Group 2 awardees, including San Rafael Rock Quarry, Inc. Top agencies Army (Department of the Army)	$125,237,020	0.5%	Rank history: #7 in FY2021, #48 in FY2022, #10 in FY2023, #21 in FY2024 and #40 in FY2025; up 68 since Jul 2024–Jun 2025.
32	Orion Marine Construction, Inc. Top agencies Army (Department of the Army)	$121,475,254	0.5%	Rank history: not on the FY2021–FY2025 lists; up 66 since Jul 2024–Jun 2025.
33	G.s.e. Construction Company, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army)	$119,229,700	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
34	ECC Expeditionary Constructors LLC Top agencies Navy (Department of the Navy)	$116,322,240	0.5%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
35	Slsco, Ltd. Top agencies Navy (Department of the Navy)	$113,564,460	0.5%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; up 93 since Jul 2024–Jun 2025.
36	C and C Joint Ventures LLC Top agencies Army (Department of the Army)	$111,397,364	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
37	Nova Group, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$108,996,006	0.4%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; up 94 since Jul 2024–Jun 2025.
38	Trumbull Corporation and Brayman Construction Corporation, A Joint Venture Top agencies Army (Department of the Army)	$104,197,245	0.4%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #55 in FY2025; down 36 since Jul 2024–Jun 2025.
39	HHI Corporation Top agencies Army (Department of the Army)	$103,625,648	0.4%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
40	Curtin Maritime Corp Top agencies Army (Department of the Army) Navy (Department of the Navy)	$102,467,999	0.4%	Rank history: not on the FY2021 list, #99 in FY2022, #54 in FY2023, not on the FY2024 list and #21 in FY2025; down 6 since Jul 2024–Jun 2025.
41	Multiquip Inc. Through Olsson Industrial Electric, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army)	$95,274,750	0.4%	Rank history: not on the FY2021–FY2025 lists; up 143 since Jul 2024–Jun 2025.
42	Donjon Marine Co., LLC Top agencies Army (Department of the Army)	$90,250,060	0.4%	Rank history: #20 in FY2021, #30 in FY2022, #33 in FY2023, #46 in FY2024 and #33 in FY2025; down 5 since Jul 2024–Jun 2025.
43	Weston Solutions Holdings Inc Through Weston Solutions Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$88,052,064	0.4%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Jul 2024–Jun 2025.
44	Weeks-Cashman JV Top agencies Navy (Department of the Navy)	$87,838,738	0.4%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Jul 2024–Jun 2025.
45	BL Harbert International LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$86,570,116	0.4%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; down 30 since Jul 2024–Jun 2025.
46	Desilva Gates Construction LLC Top agencies Army (Department of the Army)	$84,984,000	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
47	Bristol Bay Native Corporation 6 awardees, including CCI Facility Contractors, LLC, SES Constructors LLC and Bristol Engineering Services Company, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USDA (Department of Agriculture)	$82,236,486	0.3%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023, #60 in FY2024 and not on the FY2025 list; down 3 since Jul 2024–Jun 2025.
48	TKTMJ Inc. Top agencies Army (Department of the Army)	$80,692,950	0.3%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	Mike Hooks, LLC Top agencies Army (Department of the Army)	$78,609,964	0.3%	Rank history: #49 in FY2021, #25 in FY2022, #66 in FY2023, #64 in FY2024 and #47 in FY2025; up 5 since Jul 2024–Jun 2025.
50	Inland Dredging Company, L.L.C. Top agencies Army (Department of the Army)	$76,413,401	0.3%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; down 11 since Jul 2024–Jun 2025.
51	General Electric Company Through GE Renewables US LLC Top agencies Army (Department of the Army) DOE (Department of Energy) DOI (Department of the Interior)	$69,279,171	0.3%	Rank history: #85 in FY2021, not on the FY2022 list, #67 in FY2023, #50 in FY2024 and #32 in FY2025; down 27 since Jul 2024–Jun 2025.
52	Justin J. Reeves, L.l.c Top agencies Army (Department of the Army)	$67,455,326	0.3%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Jul 2024–Jun 2025.
53	Eclipse Companies, LLC Top agencies DOT (Department of Transportation) USDA (Department of Agriculture)	$67,362,433	0.3%	Rank history: not on the FY2021–FY2025 lists; up 146 since Jul 2024–Jun 2025.
54	Cottrell Contracting Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$66,617,978	0.3%	Rank history: #80 in FY2021, #68 in FY2022, #72 in FY2023, #44 in FY2024 and #41 in FY2025; up 20 since Jul 2024–Jun 2025.
55	Brice Civil Constructors, Inc. Top agencies Army (Department of the Army)	$64,689,360	0.3%	Rank history: not on the FY2021 list, #100 in FY2022, #97 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56	Agate Construction Company Inc. Top agencies Army (Department of the Army)	$63,162,164	0.3%	Rank history: not on the FY2021–FY2025 lists; up 266 since Jul 2024–Jun 2025.
57	CCI General Contractors LLC Top agencies Navy (Department of the Navy)	$62,015,049	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58	Novel Construction LLC Top agencies Army (Department of the Army) DOT (Department of Transportation)	$60,297,189	0.2%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 12 since Jul 2024–Jun 2025.
59	GC & V Construction LLC Top agencies VA (Department of Veterans Affairs)	$59,890,000	0.2%	Rank history: not on the FY2021 list, #82 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	Koontz Electric Company, Incorporated Top agencies Army (Department of the Army)	$59,444,488	0.2%	Rank history: not on the FY2021–FY2025 lists; up 270 since Jul 2024–Jun 2025.
61	David Boland Inc. Top agencies Army (Department of the Army)	$58,205,006	0.2%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and not on the FY2025 list; down 12 since Jul 2024–Jun 2025.
62	Precision Construction LLC Top agencies Army (Department of the Army)	$56,518,041	0.2%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	Michels Construction, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$53,072,734	0.2%	Rank history: not on the FY2021 list, #60 in FY2022, #63 in FY2023, not on the FY2024 list and #57 in FY2025; up 192 since Jul 2024–Jun 2025.
64	Fort Myer Construction Corp Top agencies DOT (Department of Transportation)	$53,052,326	0.2%	Rank history: not on the FY2021 list, #15 in FY2022, not on the FY2023–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
65	M.r. Pittman Group, L.l.c Top agencies Army (Department of the Army)	$51,583,401	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Jul 2024–Jun 2025.
66	JBW Group LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$50,968,794	0.2%	Rank history: not on the FY2021–FY2025 lists; up 234 since Jul 2024–Jun 2025.
67	Kokosing Alberici Traylor, LLC Top agencies Army (Department of the Army)	$48,978,160	0.2%	Rank history: not on the FY2021 list, #1 in FY2022, #9 in FY2023, #6 in FY2024 and #23 in FY2025; down 60 since Jul 2024–Jun 2025.
68	Goshawk, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$48,878,038	0.2%	Rank history: not on the FY2021–FY2025 lists; up 205 since Jul 2024–Jun 2025.
69	Absher Construction Co Top agencies Navy (Department of the Navy)	$47,418,612	0.2%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; new, not ranked in Jul 2024–Jun 2025.
70	Empire Equipment Service, Inc. Top agencies Army (Department of the Army)	$45,881,630	0.2%	Rank history: #81 in FY2021, not on the FY2022–FY2024 lists and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
71	Hendrickson Transportation LLC Top agencies Army (Department of the Army)	$45,189,611	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
72	General Constructors Inc. of the Quad Cities Top agencies Army (Department of the Army)	$44,258,194	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	Red Point Construction, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$44,193,678	0.2%	Rank history: not on the FY2021–FY2025 lists; up 173 since Jul 2024–Jun 2025.
74	Crown Innovations, Inc. Top agencies DOT (Department of Transportation)	$44,016,169	0.2%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 143 since Jul 2024–Jun 2025.
75	Dawson Enterprises, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$43,631,784	0.2%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; up 35 since Jul 2024–Jun 2025.
76	Tutor Perini Corporation 2 awardees, including Perini Management Services, Inc. and Black Micro Corporation Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$42,961,406	0.2%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	Granite Construction Company Guam 2 awardees, including Granite Construction Company Top agencies Army (Department of the Army) DOT (Department of Transportation) Navy (Department of the Navy)	$42,507,565	0.2%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023, #10 in FY2024 and #71 in FY2025; down 52 since Jul 2024–Jun 2025.
78	Treviicos South, Inc. Top agencies Army (Department of the Army)	$42,452,520	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	Arctic Slope Regional Corporation 6 awardees, including Asrc Earthworks, LLC, Asrc Prime Constructors, LLC and FDT Water Infrastructure, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHS (Department of Homeland Security)	$41,512,218	0.2%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; up 198 since Jul 2024–Jun 2025.
80	Stone & Lime Imports, Inc. Top agencies DOI (Department of the Interior)	$39,840,812	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	Knight Const. & Supply Inc Top agencies Army (Department of the Army)	$39,229,364	0.2%	Rank history: not on the FY2021–FY2023 lists, #31 in FY2024 and not on the FY2025 list; down 52 since Jul 2024–Jun 2025.
82	Luhr Crosby, LLC Top agencies Army (Department of the Army)	$37,657,131	0.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023, #30 in FY2024 and #56 in FY2025; down 49 since Jul 2024–Jun 2025.
83	WSP USA Environment & Infrastructure Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$37,355,142	0.2%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #51 in FY2025; down 35 since Jul 2024–Jun 2025.
84	Cashman Dredging & Marine Contracting Co LLC Top agencies Army (Department of the Army)	$37,069,549	0.2%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; down 28 since Jul 2024–Jun 2025.
85	Ddd-Dvg Joint Venture LLC Top agencies DOT (Department of Transportation)	$36,694,322	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
86	Strider Construction Co Inc. Top agencies DOT (Department of Transportation)	$36,477,636	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
87	Big River Construction Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$36,176,155	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
88	Commdex, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$36,065,280	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
89	FM Mccarthy, LLC Top agencies Army (Department of the Army)	$35,554,432	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	Williams Construction & Cabinetry, Inc. Top agencies USDA (Department of Agriculture) DOT (Department of Transportation)	$35,432,364	0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; up 86 since Jul 2024–Jun 2025.
91	Alamo City Constructors, Inc. Top agencies USAF (Department of the Air Force)	$35,294,117	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
92	Occi, Inc. Top agencies Army (Department of the Army)	$34,581,685	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 178 since Jul 2024–Jun 2025.
93	Roen Salvage Co Top agencies Army (Department of the Army)	$34,497,398	0.1%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #81 in FY2025; up 121 since Jul 2024–Jun 2025.
94	M.a. Deatley Construction, Inc. Top agencies DOT (Department of Transportation)	$34,048,479	0.1%	Rank history: not on the FY2021 list, #53 in FY2022 and not on the FY2023–FY2025 lists; up 382 since Jul 2024–Jun 2025.
95	Central Southern Construction Corp. Top agencies DOT (Department of Transportation)	$33,759,868	0.1%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; down 44 since Jul 2024–Jun 2025.
96	Billy W. Jarrett Construction Company, Inc. Top agencies VA (Department of Veterans Affairs)	$32,998,062	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	C.w. Roberts Contracting, Incorporated Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$32,496,395	0.1%	Rank history: not on the FY2021–FY2025 lists; up 357 since Jul 2024–Jun 2025.
98	Guidehouse Inc. 2 awardees, including Aptim Federal Services, LLC and Aptim-North Wind Construction JV LLC Top agencies DLA (Defense Logistics Agency) DOE (Department of Energy)	$32,179,502	0.1%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #67 in FY2025; down 70 since Jul 2024–Jun 2025.
99	Sealaska Secure Construction Solutions, LLC Top agencies Army (Department of the Army)	$31,802,028	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	Three Oaks Construction, Inc. Top agencies Army (Department of the Army)	$31,386,416	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; down 11 since Jul 2024–Jun 2025.

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100 of 2,204 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	$15,652,862,535	Tully Construction Co - Thalle Construction Co LLC
2371 Utility System Construction	$3,043,382,452	Core Tech-Hdcc-Kajima LLC
2373 Highway, Street, and Bridge Construction	$2,311,264,358	Peter Kiewit Sons', 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 $24.5 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.
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 NAICS 237 contractors in Jul 2025–Jun 2026?

1. Tully Construction Co - Thalle Construction Co LLC ($2.02B), 2. Barnard Construction Company, Incorporated ($1.35B), 3. Dragados / Hawaiian Dredging / Orion JV ($1.22B), 4. Ferrovial Construccion PR, LLC ($1.08B), 5. Kiewit-Alberici Siop Macc AJV ($516M), 6. Peter Kiewit Sons', Inc. ($480M), 7. Pittman-Sealevel, L.L.C. ($420M), 8. Kiewit Infrastructure West Co. ($413M), 9. Thalle - Bauer LLC ($378M), 10. Nan Inc. ($331M).

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