Top 44 Contractors in PSC C1LB: Architect and Engineering – Construction: Highways, Roads, Streets, Bridges, and Railways, Jul 2025–Jun 2026

Name: Top 44 Contractors in PSC C1LB: Architect and Engineering – Construction: Highways, Roads, Streets, Bridges, and Railways, 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 68% of PSC C1LB contract dollars from July 2025 through June 2026

Contract obligations: $56,423,441 Net of deobligations, by contracts coded PSC C1LB
Contractors: 46 Parent companies with an obligation
Largest contractor: Golder Europe Service Centre SRL $5.97 million, 10.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 44 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Golder Europe Service Centre SRL 2 awardees, including WSP USA Inc. Top agencies DOT (Department of Transportation)	$5,969,925	10.0%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023, #4 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Johnson, Mirmiran & Thompson, Inc. Top agencies DOT (Department of Transportation)	$5,643,346	9.4%	Rank history: not on the FY2021 list, #24 in FY2022, #8 in FY2023, #11 in FY2024 and #4 in FY2025; up 5 since Jul 2024–Jun 2025.
3	AECOM Technical Services, Inc. Top agencies DOT (Department of Transportation)	$5,118,946	8.5%	Rank history: not on the FY2021–FY2023 lists, #5 in FY2024 and #20 in FY2025; up 25 since Jul 2024–Jun 2025.
4	Dj&A, P.C. Top agencies DOT (Department of Transportation)	$4,528,410	7.6%	Rank history: #1 in FY2021, #3 in FY2022, #4 in FY2023, #2 in FY2024 and #14 in FY2025; up 2 since Jul 2024–Jun 2025.
5	Hdr, Inc. 2 awardees, including HDR Engineering, Inc. Top agencies DOT (Department of Transportation)	$4,473,038	7.5%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; down 3 since Jul 2024–Jun 2025.
6	Atkinsrealis USA Inc. 2 awardees Top agencies DOT (Department of Transportation)	$3,653,947	6.1%	Rank history: not on the FY2021 list, #57 in FY2022, not on the FY2023 list, #12 in FY2024 and #7 in FY2025; up 7 since Jul 2024–Jun 2025.
7	YEH and Associates Inc. Top agencies DOT (Department of Transportation)	$3,498,097	5.8%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #5 in FY2025; up 1 since Jul 2024–Jun 2025.
8	Jacobs Government Services Company 3 awardees, including Jacobs Engineering Group Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force)	$3,190,319	5.3%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #3 in FY2025; down 5 since Jul 2024–Jun 2025.
9	Lloyd Collins JV Top agencies DHS (Department of Homeland Security)	$2,401,057	4.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
10	Stantec Inc. Through Stantec Consulting Services Inc. Top agencies DOT (Department of Transportation)	$2,029,918	3.4%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023, #10 in FY2024 and #9 in FY2025; up 31 since Jul 2024–Jun 2025.
11	Pathway Services Inc. Top agencies DOT (Department of Transportation)	$1,737,800	2.9%	Rank history: not on the FY2021 list, #41 in FY2022, #40 in FY2023, #14 in FY2024 and #11 in FY2025; down 1 since Jul 2024–Jun 2025.
12	Consultant Engineering Inc Top agencies DOT (Department of Transportation)	$1,662,144	2.8%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023, #62 in FY2024 and #13 in FY2025; unchanged since Jul 2024–Jun 2025.
13	Burns & Mcdonnell Engineering Company, Inc. Top agencies Army (Department of the Army)	$1,322,508	2.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
14	Clark Nexsen/ Michael Baker JV Top agencies Navy (Department of the Navy)	$1,120,269	1.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
15	Bravo Co VI LLC Top agencies DOT (Department of Transportation)	$959,987	1.6%	Rank history: not on the FY2021 list, #10 in FY2022, #13 in FY2023, #9 in FY2024 and #6 in FY2025; down 10 since Jul 2024–Jun 2025.
16	C2Rl Engineering, Inc. Top agencies USAF (Department of the Air Force)	$905,203	1.5%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #12 in FY2025; up 1 since Jul 2024–Jun 2025.
17	Applied Research Associates, Inc. Top agencies DOT (Department of Transportation)	$856,624	1.4%	Rank history: #47 in FY2021, #49 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
18	Kimley-Horn and Associates Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$812,099	1.4%	Rank history: #52 in FY2021, not on the FY2022–FY2023 lists, #17 in FY2024 and #17 in FY2025; down 7 since Jul 2024–Jun 2025.
19	Anderson Engineering of Minnesota, LLC Top agencies VA (Department of Veterans Affairs)	$766,659	1.3%	Rank history: #30 in FY2021, not on the FY2022–FY2023 lists, #54 in FY2024 and #19 in FY2025; new, not ranked in Jul 2024–Jun 2025.
20	Forus Contracting, Inc. Top agencies Army (Department of the Army)	$612,976	1.0%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Jul 2024–Jun 2025.
21	MGE Engineering, Inc. Top agencies USDA (Department of Agriculture)	$602,328	1.0%	Rank history: #24 in FY2021, #25 in FY2022, #30 in FY2023, #21 in FY2024 and #22 in FY2025; up 4 since Jul 2024–Jun 2025.
22	Calibre Engineering Inc. Top agencies VA (Department of Veterans Affairs)	$506,447	0.8%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 15 since Jul 2024–Jun 2025.
23	Kenneth Hahn Architects Inc. Top agencies USAF (Department of the Air Force)	$485,084	0.8%	Rank history: not on the FY2021–FY2023 lists, #59 in FY2024 and #24 in FY2025; up 34 since Jul 2024–Jun 2025.
24	Wiley Wilson Burns & Mcdonnell Joint Venture Top agencies Navy (Department of the Navy)	$400,000	0.7%	Rank history: not on the FY2021 list, #28 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
25	Strategic Value Solutions, Inc. Top agencies Army (Department of the Army)	$343,444	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
26	Alpha Construction and Engineering Corporation Top agencies DOI (Department of the Interior)	$298,001	0.5%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
27	Vanasse Hangen Brustlin Inc. Top agencies DOT (Department of Transportation)	$296,355	0.5%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; down 6 since Jul 2024–Jun 2025.
28	Fathom Architecture, LLC Top agencies Navy (Department of the Navy)	$277,407	0.5%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, not on the FY2024 list and #32 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29	Atriax, P.L.L.C. Top agencies USDA (Department of Agriculture)	$249,213	0.4%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and not on the FY2025 list; up 4 since Jul 2024–Jun 2025.
30	Rs&H, Inc. Top agencies DOT (Department of Transportation)	$220,620	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
31	Civil Design & Engineering Inc. Top agencies USDA (Department of Agriculture)	$215,926	0.4%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Jul 2024–Jun 2025.
32	JMT Volkert A JV Top agencies Navy (Department of the Navy)	$178,046	0.3%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
33	Reid Middleton, Inc. Top agencies Navy (Department of the Navy)	$176,193	0.3%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023, #6 in FY2024 and #10 in FY2025; down 29 since Jul 2024–Jun 2025.
34	HDR and Tehama Joint Venture Top agencies USAF (Department of the Air Force)	$169,175	0.3%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #30 in FY2025; up 5 since Jul 2024–Jun 2025.
35	HEB Engineers Inc. Top agencies USDA (Department of Agriculture)	$149,300	0.2%	Rank history: #40 in FY2021, #52 in FY2022, not on the FY2023 list, #57 in FY2024 and not on the FY2025 list; up 10 since Jul 2024–Jun 2025.
36	John Gallup & Associates LLC Top agencies VA (Department of Veterans Affairs)	$126,599	0.2%	Rank history: #12 in FY2021, #44 in FY2022, not on the FY2023 list, #16 in FY2024 and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Stockwell Engineers, Inc. Top agencies Army (Department of the Army)	$118,359	0.2%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38	Rocksol Consulting Group, Inc. Top agencies DOT (Department of Transportation)	$100,000	0.2%	Rank history: #27 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	Acela Architects + Engineers PC Top agencies VA (Department of Veterans Affairs)	$83,135	0.1%	Rank history: #14 in FY2021, not on the FY2022 list, #17 in FY2023, #40 in FY2024 and #16 in FY2025; down 23 since Jul 2024–Jun 2025.
40	County of Riverside Top agencies HHS (Department of Health and Human Services)	$70,000	0.1%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and not on the FY2025 list; up 6 since Jul 2024–Jun 2025.
41	Ice & Dannenbaum JV 2 Top agencies Army (Department of the Army)	$43,309	0.1%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023, #38 in FY2024 and not on the FY2025 list; down 6 since Jul 2024–Jun 2025.
42	WSP USA Environment & Infrastructure Inc. Top agencies DOT (Department of Transportation)	$37,841	0.1%	Rank history: not on the FY2021 list, #53 in FY2022, #59 in FY2023, #25 in FY2024 and #39 in FY2025; down 19 since Jul 2024–Jun 2025.
43	Citrine-Olsson JV LLC Top agencies USDA (Department of Agriculture)	$15,761	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	Atlas Technical Consultants (Ca), Inc. Top agencies DOT (Department of Transportation)	$11,284	<0.1%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #21 in FY2025; down 26 since Jul 2024–Jun 2025.

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44 of 46 contractors listed here. See the rest on GovTribe.

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 $59.9 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 PSC C1LB contractors in Jul 2025–Jun 2026?

1. Golder Europe Service Centre SRL ($5.97M), 2. Johnson, Mirmiran & Thompson, Inc. ($5.64M), 3. AECOM Technical Services, Inc. ($5.12M), 4. Dj&A, P.C. ($4.53M), 5. Hdr, Inc. ($4.47M), 6. Atkinsrealis USA Inc. ($3.65M), 7. YEH and Associates Inc. ($3.5M), 8. Jacobs Government Services Company ($3.19M), 9. Lloyd Collins JV ($2.4M), 10. Stantec Inc. ($2.03M).

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