Top 100 Contractors in NAICS 2379: Other Heavy and Civil Engineering Construction, Aug 2025–Jul 2026

Name: Top 100 Contractors in NAICS 2379: Other Heavy and Civil Engineering Construction, Aug 2025–Jul 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe

The latest 12 months. See the newest fiscal year's list: Top Contractors in NAICS 2379: Other Heavy and Civil Engineering Construction, FY2025.

The top 10 won 43% of NAICS 2379 contract dollars from August 2025 through July 2026

Contract obligations: $14,572,670,802 Net of deobligations, by contracts coded NAICS 2379 or a code under it
Contractors: 770 Parent companies with an obligation
Largest contractor: Tully Construction Co - Thalle Construction Co LLC $1.92 billion, 11.1% of obligations
Data as of: Nov 5, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

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)	$1,918,299,211	11.1%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #6 in FY2025; up 4 since Aug 2024–Jul 2025.
2	Barnard Construction Company, Incorporated Top agencies Army (Department of the Army)	$1,353,973,995	7.9%	Rank history: not on the FY2021 list, #15 in FY2022, not on the FY2023 list, #59 in FY2024 and #10 in FY2025; up 9 since Aug 2024–Jul 2025.
3	Ferrovial Construccion PR, LLC Top agencies Army (Department of the Army)	$1,206,269,586	7.0%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
4	Kiewit Infrastructure West Co. 7 awardees, including Weeks Marine, Inc., Kiewit Infrastructure South Co and Kiewit US Contractors Co Top agencies Army (Department of the Army) DOI (Department of the Interior) Navy (Department of the Navy)	$576,776,097	3.4%	Rank history: not on the FY2021–FY2025 lists; up 171 since Aug 2024–Jul 2025.
5	Kiewit-Alberici Siop Macc AJV Top agencies Navy (Department of the Navy)	$517,691,408	3.0%	Rank history: not on the FY2021–FY2022 lists, #5 in FY2023, not on the FY2024 list and #8 in FY2025; up 266 since Aug 2024–Jul 2025.
6	Pittman-Sealevel, L.L.C. Top agencies Army (Department of the Army)	$419,667,904	2.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
7	Thalle - Bauer LLC Top agencies Army (Department of the Army)	$378,960,240	2.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
8	Dragados / Hawaiian Dredging / Orion JV Top agencies Navy (Department of the Navy)	$354,411,471	2.1%	Rank history: not on the FY2021–FY2022 lists, #2 in FY2023, #1 in FY2024 and #2 in FY2025; down 7 since Aug 2024–Jul 2025.
9	Flatiron-Aecon Joint Venture Top agencies Army (Department of the Army)	$320,187,168	1.9%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 83 since Aug 2024–Jul 2025.
10	Manson Construction Co Top agencies Army (Department of the Army) Navy (Department of the Navy) Commerce (Department of Commerce)	$294,014,907	1.7%	Rank history: #8 in FY2021, #6 in FY2022, #4 in FY2023, #7 in FY2024 and #5 in FY2025; down 2 since Aug 2024–Jul 2025.
11	C.j. Mahan Construction Company, LLC Top agencies Army (Department of the Army)	$253,304,485	1.5%	Rank history: #26 in FY2021, not on the FY2022–FY2023 lists, #58 in FY2024 and #28 in FY2025; up 17 since Aug 2024–Jul 2025.
12	Nan Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$248,107,147	1.4%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #7 in FY2025; unchanged since Aug 2024–Jul 2025.
13	Forgen-Odin JV Top agencies Army (Department of the Army)	$233,380,220	1.4%	Rank history: not on the FY2021 list, #4 in FY2022, #10 in FY2023, #85 in FY2024 and #46 in FY2025; up 26 since Aug 2024–Jul 2025.
14	Great Lakes Dredge & Dock Corporation 2 awardees, including Forgen LLC Top agencies Army (Department of the Army) DOI (Department of the Interior)	$229,187,032	1.3%	Rank history: #1 in FY2021, #5 in FY2022, #1 in FY2023, #3 in FY2024 and #4 in FY2025; down 10 since Aug 2024–Jul 2025.
15	Peter Kiewit Sons', Inc. 5 awardees, including Weeks Marine, Inc., Kiewit Infrastructure South Co and Kiewit Infrastructure Co. Top agencies Army (Department of the Army) IBWC (International Boundary and Water Commission U.S.-Mexico) DOI (Department of the Interior)	$213,920,011	1.2%	Rank history: #5 in FY2021, not on the FY2022 list, #12 in FY2023, #4 in FY2024 and #1 in FY2025; down 13 since Aug 2024–Jul 2025.
16	J.f. Brennan Company, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$184,734,499	1.1%	Rank history: #28 in FY2021, #58 in FY2022, #83 in FY2023, #20 in FY2024 and #47 in FY2025; up 6 since Aug 2024–Jul 2025.
17	MEB General Contractors Inc. Top agencies Navy (Department of the Navy)	$170,762,446	1.0%	Rank history: not on the FY2021 list, #32 in FY2022, #43 in FY2023, #21 in FY2024 and not on the FY2025 list; up 189 since Aug 2024–Jul 2025.
18	The Dutra Group 2 awardees, including San Rafael Rock Quarry, Inc. Top agencies Army (Department of the Army)	$168,102,510	1.0%	Rank history: #7 in FY2021, #38 in FY2022, #7 in FY2023, #14 in FY2024 and #25 in FY2025; up 47 since Aug 2024–Jul 2025.
19	Clark Construction LLC Through Clark Construction Group LLC Top agencies Army (Department of the Army)	$167,241,000	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
20	381 Constructors Top agencies Navy (Department of the Navy)	$159,819,619	0.9%	Rank history: #25 in FY2021, #2 in FY2022, #3 in FY2023, #5 in FY2024 and not on the FY2025 list; down 11 since Aug 2024–Jul 2025.
21	Norfolk Dredging Company Top agencies Army (Department of the Army)	$129,587,645	0.8%	Rank history: #15 in FY2021, #12 in FY2022, #14 in FY2023, #26 in FY2024 and #12 in FY2025; down 7 since Aug 2024–Jul 2025.
22	NW Construction, Inc. Top agencies DOI (Department of the Interior)	$123,789,530	0.7%	Rank history: not on the FY2021 list, #17 in FY2022, #38 in FY2023, #17 in FY2024 and #9 in FY2025; down 12 since Aug 2024–Jul 2025.
23	Trumbull Corporation and Brayman Construction Corporation, A Joint Venture Top agencies Army (Department of the Army)	$122,196,627	0.7%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #34 in FY2025; down 20 since Aug 2024–Jul 2025.
24	Orion Marine Construction, Inc. Top agencies Army (Department of the Army)	$121,507,830	0.7%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and #83 in FY2025; up 35 since Aug 2024–Jul 2025.
25	ECC Expeditionary Constructors LLC Top agencies Navy (Department of the Navy)	$115,797,703	0.7%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; new, not ranked in Aug 2024–Jul 2025.
26	Curtin Maritime Corp Top agencies Army (Department of the Army) Navy (Department of the Navy)	$115,301,123	0.7%	Rank history: #96 in FY2021, #64 in FY2022, #39 in FY2023, #80 in FY2024 and #15 in FY2025; down 2 since Aug 2024–Jul 2025.
27	Donjon Marine Co., LLC Top agencies Army (Department of the Army)	$114,953,110	0.7%	Rank history: #17 in FY2021, #21 in FY2022, #26 in FY2023, #33 in FY2024 and #21 in FY2025; up 15 since Aug 2024–Jul 2025.
28	C and C Joint Ventures LLC Top agencies Army (Department of the Army)	$111,397,364	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
29	Calista Corp 5 awardees, including Brice Civil Constructors, Inc., Brice Pacific LLC and Brice Builders, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) VA (Department of Veterans Affairs)	$107,895,571	0.6%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Aug 2024–Jul 2025.
30	HHI Corporation Top agencies Army (Department of the Army)	$103,673,905	0.6%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Weeks-Cashman JV Top agencies Navy (Department of the Navy)	$95,572,998	0.6%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; new, not ranked in Aug 2024–Jul 2025.
32	Inland Dredging Company, L.L.C. Top agencies Army (Department of the Army)	$91,015,281	0.5%	Rank history: #98 in FY2021, not on the FY2022–FY2024 lists and #23 in FY2025; down 6 since Aug 2024–Jul 2025.
33	Desilva Gates Construction LLC Top agencies Army (Department of the Army)	$84,984,000	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
34	TKTMJ Inc. Top agencies Army (Department of the Army)	$80,717,774	0.5%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
35	Mike Hooks, LLC Top agencies Army (Department of the Army)	$71,712,378	0.4%	Rank history: #37 in FY2021, #19 in FY2022, #48 in FY2023, #39 in FY2024 and #31 in FY2025; down 6 since Aug 2024–Jul 2025.
36	Alberici Constructors Inc. Top agencies Army (Department of the Army)	$70,626,214	0.4%	Rank history: not on the FY2021 list, #44 in FY2022 and not on the FY2023–FY2025 lists; up 156 since Aug 2024–Jul 2025.
37	General Electric Company Through GE Renewables US LLC Top agencies Army (Department of the Army) DOE (Department of Energy) DOI (Department of the Interior)	$68,717,686	0.4%	Rank history: #62 in FY2021, not on the FY2022 list, #49 in FY2023, #34 in FY2024 and #19 in FY2025; down 19 since Aug 2024–Jul 2025.
38	Justin J. Reeves, L.l.c Top agencies Army (Department of the Army)	$64,583,253	0.4%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; up 205 since Aug 2024–Jul 2025.
39	Agate Construction Company, Inc. Top agencies Army (Department of the Army)	$63,617,500	0.4%	Rank history: not on the FY2021–FY2025 lists; up 311 since Aug 2024–Jul 2025.
40	Hawaii Harbors Constructors JV Top agencies Navy (Department of the Navy)	$61,369,884	0.4%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023, not on the FY2024 list and #11 in FY2025; down 27 since Aug 2024–Jul 2025.
41	GC & V Construction LLC Top agencies VA (Department of Veterans Affairs)	$59,890,000	0.3%	Rank history: not on the FY2021 list, #56 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
42	Occi, Inc. 2 awardees Top agencies Army (Department of the Army)	$59,121,226	0.3%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; up 107 since Aug 2024–Jul 2025.
43	Novel Construction LLC Top agencies Army (Department of the Army)	$58,200,626	0.3%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; up 15 since Aug 2024–Jul 2025.
44	Precision Construction LLC Top agencies Army (Department of the Army)	$56,518,041	0.3%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; new, not ranked in Aug 2024–Jul 2025.
45	Cottrell Contracting Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$51,798,566	0.3%	Rank history: #57 in FY2021, #46 in FY2022, #51 in FY2023, #32 in FY2024 and #26 in FY2025; down 14 since Aug 2024–Jul 2025.
46	M.r. Pittman Group, L.l.c Top agencies Army (Department of the Army)	$51,583,401	0.3%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Aug 2024–Jul 2025.
47	Kokosing Alberici Traylor, LLC Top agencies Army (Department of the Army)	$50,609,882	0.3%	Rank history: not on the FY2021 list, #1 in FY2022, #6 in FY2023, #6 in FY2024 and #16 in FY2025; down 40 since Aug 2024–Jul 2025.
48	Mcmillen, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army)	$45,379,108	0.3%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023, #45 in FY2024 and #55 in FY2025; up 20 since Aug 2024–Jul 2025.
49	Hendrickson Transportation LLC Top agencies Army (Department of the Army)	$45,189,611	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
50	General Constructors Inc. of the Quad Cities Top agencies Army (Department of the Army)	$44,235,194	0.3%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and not on the FY2024–FY2025 lists; up 371 since Aug 2024–Jul 2025.
51	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 Aug 2024–Jul 2025.
52	Stone & Lime Imports, Inc. Top agencies DOI (Department of the Interior)	$39,840,812	0.2%	Rank history: not on the FY2021–FY2025 lists; up 228 since Aug 2024–Jul 2025.
53	Knight Const. & Supply Inc Top agencies Army (Department of the Army)	$38,440,564	0.2%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #84 in FY2025; down 33 since Aug 2024–Jul 2025.
54	Kuuk Investments, LLC Through HME Construction Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$37,936,246	0.2%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; up 77 since Aug 2024–Jul 2025.
55	JBW Group LLC Top agencies Army (Department of the Army)	$37,244,990	0.2%	Rank history: not on the FY2021–FY2025 lists; up 256 since Aug 2024–Jul 2025.
56	Big River Construction Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$36,176,155	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
57	Roen Salvage Co. Top agencies Army (Department of the Army)	$34,541,498	0.2%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #52 in FY2025; up 66 since Aug 2024–Jul 2025.
58	Dean Marine and Excavating, Inc. Top agencies Army (Department of the Army)	$34,122,076	0.2%	Rank history: not on the FY2021–FY2025 lists; up 92 since Aug 2024–Jul 2025.
59	Sealaska Secure Construction Solutions, LLC Top agencies Army (Department of the Army)	$33,531,908	0.2%	Rank history: not on the FY2021 list, #70 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	Tpc-Nan A Joint Venture Top agencies Navy (Department of the Navy)	$32,001,298	0.2%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; down 54 since Aug 2024–Jul 2025.
61	Brayman Construction Corp Top agencies Army (Department of the Army)	$31,349,074	0.2%	Rank history: #84 in FY2021, not on the FY2022–FY2024 lists and #93 in FY2025; up 40 since Aug 2024–Jul 2025.
62	Three Oaks Construction, Inc. Top agencies Army (Department of the Army)	$30,761,513	0.2%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and #63 in FY2025; down 11 since Aug 2024–Jul 2025.
63	Granite Construction Company Guam Through Granite Construction Company Top agencies Army (Department of the Army)	$29,826,094	0.2%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2023, #27 in FY2024 and #66 in FY2025; down 46 since Aug 2024–Jul 2025.
64	Maverick Constructors, LLC Top agencies Army (Department of the Army)	$29,270,690	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
65	Odin Environmental Solutions, LLC Top agencies Army (Department of the Army) IBWC (International Boundary and Water Commission U.S.-Mexico)	$29,161,625	0.2%	Rank history: not on the FY2021 list, #50 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; up 402 since Aug 2024–Jul 2025.
66	Cashman Dredging & Marine Contracting Co LLC Top agencies Army (Department of the Army)	$29,118,721	0.2%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; down 32 since Aug 2024–Jul 2025.
67	Nova Group, Inc. Top agencies Navy (Department of the Navy)	$27,770,347	0.2%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; up 286 since Aug 2024–Jul 2025.
68	Rq-Magann JV Top agencies Navy (Department of the Navy)	$27,188,165	0.2%	Rank history: not on the FY2021 list, #23 in FY2022, #11 in FY2023, #24 in FY2024 and #74 in FY2025; up 248 since Aug 2024–Jul 2025.
69	Greenberry Industrial LLC Through Olsson Industrial Electric, Inc. Top agencies Army (Department of the Army)	$26,756,629	0.2%	Rank history: not on the FY2021–FY2025 lists; up 41 since Aug 2024–Jul 2025.
70	Luhr Crosby, LLC Top agencies Army (Department of the Army)	$26,035,625	0.2%	Rank history: not on the FY2021 list, #85 in FY2022, #34 in FY2023, #22 in FY2024 and #35 in FY2025; down 51 since Aug 2024–Jul 2025.
71	Port of Portland (INC) Top agencies Army (Department of the Army)	$25,357,809	0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023, #77 in FY2024 and #44 in FY2025; down 21 since Aug 2024–Jul 2025.
72	Marinex Construction Inc. Top agencies Army (Department of the Army)	$25,319,849	0.1%	Rank history: #63 in FY2021, #54 in FY2022, #32 in FY2023, #51 in FY2024 and #82 in FY2025; down 8 since Aug 2024–Jul 2025.
73	Bauer Foundation Corp. Top agencies Army (Department of the Army)	$24,795,871	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
74	Circle, LLC Top agencies Army (Department of the Army)	$24,664,555	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023, #56 in FY2024 and not on the FY2025 list; down 2 since Aug 2024–Jul 2025.
75	C & C Contractors LLC Top agencies VA (Department of Veterans Affairs)	$24,602,946	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023, not on the FY2024 list and #38 in FY2025; up 4 since Aug 2024–Jul 2025.
76	Mohawk Northeast Inc. Top agencies Army (Department of the Army)	$24,434,100	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
77	Pine Bluff Sand and Gravel Company Top agencies Army (Department of the Army)	$23,785,426	0.1%	Rank history: #53 in FY2021, #31 in FY2022, #28 in FY2023, #29 in FY2024 and #29 in FY2025; down 40 since Aug 2024–Jul 2025.
78	Callan Marine Limited Top agencies Army (Department of the Army)	$23,573,150	0.1%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023, #12 in FY2024 and not on the FY2025 list; down 63 since Aug 2024–Jul 2025.
79	Muddy Water Dredging, LP Top agencies Army (Department of the Army)	$23,383,942	0.1%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and #77 in FY2025; down 13 since Aug 2024–Jul 2025.
80	Harkins Builders Inc. Top agencies DHS (Department of Homeland Security)	$22,972,457	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Aug 2024–Jul 2025.
81	Hamilton Construction, LLC Top agencies Army (Department of the Army)	$22,848,100	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
82	Morrish-Wallace Construction, Inc. Top agencies Army (Department of the Army)	$22,044,572	0.1%	Rank history: #46 in FY2021, #84 in FY2022, #68 in FY2023, #64 in FY2024 and #72 in FY2025; up 2 since Aug 2024–Jul 2025.
83	American Mine Services LLC Through AMS Industrial LLC Top agencies Army (Department of the Army)	$21,987,860	0.1%	Rank history: not on the FY2021–FY2025 lists; up 108 since Aug 2024–Jul 2025.
84	Southern Dredging Co Inc. Top agencies Army (Department of the Army)	$21,617,397	0.1%	Rank history: not on the FY2021 list, #81 in FY2022, not on the FY2023 list, #92 in FY2024 and #86 in FY2025; new, not ranked in Aug 2024–Jul 2025.
85	Koman Construction, LLC Top agencies DHS (Department of Homeland Security)	$21,303,096	0.1%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; up 113 since Aug 2024–Jul 2025.
86	KMC Solutions, LLC Top agencies VA (Department of Veterans Affairs)	$20,813,723	0.1%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; up 312 since Aug 2024–Jul 2025.
87	Howard W. Pence, Inc. Top agencies Army (Department of the Army)	$20,271,770	0.1%	Rank history: not on the FY2021–FY2025 lists; up 126 since Aug 2024–Jul 2025.
88	Red Bison Services, LLC Top agencies Army (Department of the Army)	$20,102,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; new, not ranked in Aug 2024–Jul 2025.
89	Iron Mike Construction LLC Top agencies VA (Department of Veterans Affairs)	$19,671,408	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	Southwind Construction Corp. Top agencies Army (Department of the Army)	$19,616,751	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; up 91 since Aug 2024–Jul 2025.
91	Fedvet Construction Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$19,598,072	0.1%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; up 67 since Aug 2024–Jul 2025.
92	A&R Pacific-Garney Federal JV II Top agencies DOI (Department of the Interior)	$19,039,200	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Aug 2024–Jul 2025.
93	Union Paving & Construction Co Top agencies Navy (Department of the Navy)	$17,154,700	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	Allison Park Contractors, Inc. Top agencies Army (Department of the Army)	$17,055,100	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
95	Randy Kinder Excavating Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army) VA (Department of Veterans Affairs)	$16,838,846	0.1%	Rank history: #30 in FY2021, #79 in FY2022 and not on the FY2023–FY2025 lists; up 2 since Aug 2024–Jul 2025.
96	BCI Construction Usa, Inc. Top agencies Army (Department of the Army)	$16,822,065	0.1%	Rank history: not on the FY2021 list, #47 in FY2022 and not on the FY2023–FY2025 lists; up 179 since Aug 2024–Jul 2025.
97	Michels Corp 2 awardees, including Michels Construction, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$16,269,545	0.1%	Rank history: #80 in FY2021, #7 in FY2022, not on the FY2023–FY2024 lists and #45 in FY2025; new, not ranked in Aug 2024–Jul 2025.
98	Miami Nation Stronghold, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$16,217,786	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
99	Cam-Dutra Jv-Ii LLC Top agencies Army (Department of the Army)	$16,035,691	0.1%	Rank history: not on the FY2021–FY2025 lists; up 40 since Aug 2024–Jul 2025.
100	Atherton Construction LLC Top agencies Army (Department of the Army)	$15,632,129	0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; new, not ranked in Aug 2024–Jul 2025.

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100 of 770 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 2379

Code	Net obligations	Largest contractor
23799 Other Heavy and Civil Engineering Construction	$14,572,670,802	Tully Construction Co - Thalle Construction Co LLC

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 $17.2 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 Aug 2024–Jul 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 2379 contractors in Aug 2025–Jul 2026?

1. Tully Construction Co - Thalle Construction Co LLC ($1.92B), 2. Barnard Construction Company, Incorporated ($1.35B), 3. Ferrovial Construccion PR, LLC ($1.21B), 4. Kiewit Infrastructure West Co. ($577M), 5. Kiewit-Alberici Siop Macc AJV ($518M), 6. Pittman-Sealevel, L.L.C. ($420M), 7. Thalle - Bauer LLC ($379M), 8. Dragados / Hawaiian Dredging / Orion JV ($354M), 9. Flatiron-Aecon Joint Venture ($320M), 10. Manson Construction Co ($294M).

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