Top 40 Contractors in NAICS 4882: Support Activities for Rail Transportation, Jul 2025–Jun 2026

Name: Top 40 Contractors in NAICS 4882: Support Activities for Rail Transportation, 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 77% of NAICS 4882 contract dollars from July 2025 through June 2026

Contract obligations: $25,883,768 Net of deobligations, by contracts coded NAICS 4882 or a code under it
Contractors: 41 Parent companies with an obligation
Largest contractor: Alltrack, Inc. $4.73 million, 17.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 40 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Alltrack, Inc. Top agencies Army (Department of the Army)	$4,731,334	17.4%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Quality Turbocharger Components LLC Top agencies DOT (Department of Transportation)	$4,620,029	17.0%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023, #3 in FY2024 and #3 in FY2025; up 3 since Jul 2024–Jun 2025.
3	MEB General Contractors Inc. Top agencies Navy (Department of the Navy)	$4,117,885	15.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
4	Sierra Northern Railway Top agencies Army (Department of the Army)	$1,695,022	6.2%	Rank history: #2 in FY2021, #1 in FY2022, #2 in FY2023, #2 in FY2024 and #6 in FY2025; unchanged since Jul 2024–Jun 2025.
5	Central Gulf Railcar Services, LLC Top agencies Army (Department of the Army)	$1,236,200	4.5%	Rank history: #17 in FY2021, not on the FY2022 list, #13 in FY2023, #12 in FY2024 and #10 in FY2025; up 9 since Jul 2024–Jun 2025.
6	Amtrac Railroad Contractors of Maryland, Inc. Top agencies Army (Department of the Army)	$1,003,635	3.7%	Rank history: #6 in FY2021, #5 in FY2022, #5 in FY2023, #9 in FY2024 and #2 in FY2025; up 1 since Jul 2024–Jun 2025.
7	Japan Freight Railway Company Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$909,728	3.3%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #4 in FY2025; down 5 since Jul 2024–Jun 2025.
8	Liberty Railway Services Inc. Top agencies Army (Department of the Army)	$898,110	3.3%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and #13 in FY2025; up 5 since Jul 2024–Jun 2025.
9	Pennsylvania & Southern Railway LLC Top agencies Army (Department of the Army)	$830,050	3.1%	Rank history: #21 in FY2021, #14 in FY2022, #15 in FY2023, #36 in FY2024 and #12 in FY2025; up 7 since Jul 2024–Jun 2025.
10	T & C Clearing & Railroad Repair, Inc. Top agencies Navy (Department of the Navy)	$819,598	3.0%	Rank history: #3 in FY2021, #7 in FY2022, #4 in FY2023, #8 in FY2024 and #7 in FY2025; unchanged since Jul 2024–Jun 2025.
11	Quality Transportation Services, Inc. Top agencies USAF (Department of the Air Force)	$740,016	2.7%	Rank history: not on the FY2021 list, #3 in FY2022, #6 in FY2023, #6 in FY2024 and #9 in FY2025; down 2 since Jul 2024–Jun 2025.
12	East Japan Railway Company Top agencies USAF (Department of the Air Force)	$702,455	2.6%	Rank history: #7 in FY2021, #17 in FY2022, not on the FY2023–FY2024 lists and #42 in FY2025; up 31 since Jul 2024–Jun 2025.
13	R & S Railworks, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$607,449	2.2%	Rank history: #8 in FY2021, #10 in FY2022, #10 in FY2023, #21 in FY2024 and #16 in FY2025; up 10 since Jul 2024–Jun 2025.
14	Berkshire Hathaway Inc. Through Bnsf Railway Company Top agencies Army (Department of the Army)	$388,773	1.4%	Rank history: #15 in FY2021, #21 in FY2022, #32 in FY2023, #37 in FY2024 and #33 in FY2025; up 21 since Jul 2024–Jun 2025.
15	Atom Rail LLC Top agencies Army (Department of the Army)	$284,165	1.0%	Rank history: not on the FY2021 list, #9 in FY2022, not on the FY2023–FY2024 lists and #14 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Bering Straits Global Innovations, LLC Top agencies Navy (Department of the Navy)	$278,232	1.0%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; down 10 since Jul 2024–Jun 2025.
17	Rhinehart Railroad Construction Inc. Top agencies USAF (Department of the Air Force)	$276,184	1.0%	Rank history: #5 in FY2021, #8 in FY2022, not on the FY2023 list, #5 in FY2024 and #8 in FY2025; down 14 since Jul 2024–Jun 2025.
18	G. K. Enterprises Inc. Through Whiting Services Inc. Top agencies Navy (Department of the Navy)	$249,626	0.9%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, not on the FY2024 list and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
19	Genesis Rail Services II, LLC Top agencies Navy (Department of the Navy)	$222,623	0.8%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; up 1 since Jul 2024–Jun 2025.
20	Union Construction Co., Ltd. Top agencies USAF (Department of the Air Force)	$206,539	0.8%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and not on the FY2025 list; up 1 since Jul 2024–Jun 2025.
21	Union Pacific Railroad Company Top agencies DOT (Department of Transportation)	$185,395	0.7%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
22	Sparta Crane & Construction LLC Top agencies Army (Department of the Army)	$169,650	0.6%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	Highly Skilled Veterans LLC Top agencies Army (Department of the Army)	$137,184	0.5%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Jul 2024–Jun 2025.
24	Peter Gross Rail GMBH & Co. KG Top agencies Army (Department of the Army)	$130,842	0.5%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #26 in FY2025; up 5 since Jul 2024–Jun 2025.
25	Kotsukensetsu Co., Ltd. Top agencies Navy (Department of the Navy)	$116,443	0.4%	Rank history: #13 in FY2021, #16 in FY2022, #21 in FY2023, #18 in FY2024 and #17 in FY2025; down 7 since Jul 2024–Jun 2025.
26	Meyer Landschaftsbau GMBH Top agencies Army (Department of the Army)	$107,663	0.4%	Rank history: #24 in FY2021, #19 in FY2022, #23 in FY2023, #28 in FY2024 and #22 in FY2025; unchanged since Jul 2024–Jun 2025.
27	United Rail Construction, LLC Top agencies Army (Department of the Army)	$100,000	0.4%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	Mississippi Export Railroad Company Top agencies Army (Department of the Army)	$98,926	0.4%	Rank history: #16 in FY2021, not on the FY2022 list, #18 in FY2023, #14 in FY2024 and #21 in FY2025; down 13 since Jul 2024–Jun 2025.
29	SBS Ingenieure Ingenieurgesellschaft Fuer DAS Bauwesen MBH Top agencies Army (Department of the Army)	$84,763	0.3%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #25 in FY2025; down 7 since Jul 2024–Jun 2025.
30	Interactive Rail, LLC Top agencies Army (Department of the Army)	$39,960	0.1%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 2 since Jul 2024–Jun 2025.
31	JJ Contracting Corp Top agencies Army (Department of the Army)	$26,802	0.1%	Rank history: not on the FY2021 list, #25 in FY2022, #29 in FY2023, #39 in FY2024 and #30 in FY2025; up 3 since Jul 2024–Jun 2025.
32	Korea Railroad Corporation Top agencies USAF (Department of the Air Force)	$25,554	0.1%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #31 in FY2025; up 6 since Jul 2024–Jun 2025.
33	Gerd Kunkel Top agencies Army (Department of the Army)	$23,222	0.1%	Rank history: #35 in FY2021, #29 in FY2022, #33 in FY2023, #41 in FY2024 and #32 in FY2025; down 3 since Jul 2024–Jun 2025.
34	The Delaware-Lackawanna Railroad, Co., Inc. Top agencies DOI (Department of the Interior)	$22,582	0.1%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #27 in FY2025; down 7 since Jul 2024–Jun 2025.
35	Cranemasters Inc. Top agencies Navy (Department of the Navy)	$19,115	0.1%	Rank history: not on the FY2021 list, #32 in FY2022, not on the FY2023 list, #54 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
36	Mchugh Railroad Maintenance Equipment, Inc. Top agencies Navy (Department of the Navy)	$12,126	<0.1%	Rank history: not on the FY2021 list, #6 in FY2022, not on the FY2023–FY2024 lists and #39 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	CSX Corporation Through CSX Transportation, Inc. Top agencies DOE (Department of Energy)	$5,564	<0.1%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; down 12 since Jul 2024–Jun 2025.
38	SOO Line Railroad Company Top agencies Army (Department of the Army)	$3,641	<0.1%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; up 11 since Jul 2024–Jun 2025.
39	Pennsylvania Northeast Regional Railroad Authority Top agencies DOI (Department of the Interior)	$3,426	<0.1%	Rank history: #36 in FY2021, #31 in FY2022, #40 in FY2023, #53 in FY2024 and #46 in FY2025; up 5 since Jul 2024–Jun 2025.
40	Werres Corporation Top agencies Navy (Department of the Navy)	$1,504	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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40 of 41 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 4882

Code	Net obligations	Largest contractor
48821 Support Activities for Rail Transportation	$25,883,768	Alltrack, 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 $27.2 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
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 4882 contractors in Jul 2025–Jun 2026?

1. Alltrack, Inc. ($4.73M), 2. Quality Turbocharger Components LLC ($4.62M), 3. MEB General Contractors Inc. ($4.12M), 4. Sierra Northern Railway ($1.7M), 5. Central Gulf Railcar Services, LLC ($1.24M), 6. Amtrac Railroad Contractors of Maryland, Inc. ($1M), 7. Japan Freight Railway Company ($910K), 8. Liberty Railway Services Inc. ($898K), 9. Pennsylvania & Southern Railway LLC ($830K), 10. T & C Clearing & Railroad Repair, Inc. ($820K).

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