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

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	WSP USA Solutions Inc 3 awardees, including WSP USA Inc. and WSP USA Environment & Infrastructure Inc. Top agencies DOT (Department of Transportation)	$6,324,809	10.4%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023, #4 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Hdr, Inc. 2 awardees, including HDR Engineering, Inc. Top agencies DOT (Department of Transportation)	$5,228,013	8.6%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
3	AECOM Through AECOM Technical Services, Inc. Top agencies DOT (Department of Transportation)	$5,070,817	8.4%	Rank history: #20 in FY2021, #20 in FY2022, #6 in FY2023, #33 in FY2024 and #20 in FY2025; new, not ranked in Aug 2024–Jul 2025.
4	Jacobs Engineering Group Inc. 3 awardees, including Jacobs Government Services Company Top agencies DOT (Department of Transportation) USAF (Department of the Air Force)	$5,017,635	8.3%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #3 in FY2025; down 1 since Aug 2024–Jul 2025.
5	Dj&A, P.C. Top agencies DOT (Department of Transportation)	$4,656,900	7.7%	Rank history: #1 in FY2021, #3 in FY2022, #4 in FY2023, #2 in FY2024 and #14 in FY2025; up 3 since Aug 2024–Jul 2025.
6	Consultant Engineering Inc Top agencies DOT (Department of Transportation)	$4,107,120	6.8%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023, #62 in FY2024 and #13 in FY2025; up 11 since Aug 2024–Jul 2025.
7	Johnson, Mirmiran & Thompson, Inc. Top agencies DOT (Department of Transportation)	$3,964,236	6.5%	Rank history: not on the FY2021 list, #24 in FY2022, #8 in FY2023, #11 in FY2024 and #4 in FY2025; down 3 since Aug 2024–Jul 2025.
8	Atkinsrealis USA Inc. 2 awardees Top agencies DOT (Department of Transportation)	$3,404,475	5.6%	Rank history: not on the FY2021 list, #57 in FY2022, not on the FY2023 list, #12 in FY2024 and #7 in FY2025; up 3 since Aug 2024–Jul 2025.
9	Lloyd Collins JV Top agencies DHS (Department of Homeland Security)	$2,430,475	4.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
10	YEH and Associates Inc. Top agencies DOT (Department of Transportation)	$2,004,333	3.3%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #5 in FY2025; down 4 since Aug 2024–Jul 2025.
11	Stantec Inc. Through Stantec Consulting Services Inc. Top agencies DOT (Department of Transportation)	$1,597,660	2.6%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023, #10 in FY2024 and #9 in FY2025; up 1 since Aug 2024–Jul 2025.
12	Burns & Mcdonnell, Inc. Through Burns & Mcdonnell Engineering Company, Inc. Top agencies Army (Department of the Army)	$1,381,710	2.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
13	Pathway Services Inc. Top agencies DOT (Department of Transportation)	$1,133,398	1.9%	Rank history: not on the FY2021 list, #41 in FY2022, #40 in FY2023, #14 in FY2024 and #11 in FY2025; down 3 since Aug 2024–Jul 2025.
14	Clark Nexsen/ Michael Baker JV Top agencies Navy (Department of the Navy)	$1,120,269	1.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 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 8 since Aug 2024–Jul 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 2 since Aug 2024–Jul 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 Aug 2024–Jul 2025.
18	Kimley-Horn and Associates Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$812,099	1.3%	Rank history: #52 in FY2021, not on the FY2022–FY2023 lists, #17 in FY2024 and #17 in FY2025; down 5 since Aug 2024–Jul 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 Aug 2024–Jul 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 Aug 2024–Jul 2025.
21	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 16 since Aug 2024–Jul 2025.
22	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; new, not ranked in Aug 2024–Jul 2025.
23	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 Aug 2024–Jul 2025.
24	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 Aug 2024–Jul 2025.
25	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 Aug 2024–Jul 2025.
26	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; new, not ranked in Aug 2024–Jul 2025.
27	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 6 since Aug 2024–Jul 2025.
28	Reid Middleton, Inc. Top agencies Navy (Department of the Navy)	$226,738	0.4%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023, #6 in FY2024 and #10 in FY2025; down 23 since Aug 2024–Jul 2025.
29	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 Aug 2024–Jul 2025.
30	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 Aug 2024–Jul 2025.
31	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 Aug 2024–Jul 2025.
32	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 7 since Aug 2024–Jul 2025.
33	Atlas Technical Consultants (Ca), Inc. Top agencies DOT (Department of Transportation)	$168,688	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
34	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 11 since Aug 2024–Jul 2025.
35	MGE Engineering, Inc. Top agencies USDA (Department of Agriculture)	$131,365	0.2%	Rank history: #24 in FY2021, #25 in FY2022, #30 in FY2023, #21 in FY2024 and #22 in FY2025; down 14 since Aug 2024–Jul 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 Aug 2024–Jul 2025.
37	Fathom Architecture, LLC Top agencies Navy (Department of the Navy)	$120,904	0.2%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, not on the FY2024 list and #32 in FY2025; up 3 since Aug 2024–Jul 2025.
38	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 Aug 2024–Jul 2025.
39	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 Aug 2024–Jul 2025.
40	Acela Architects + Engineers PC Top agencies VA (Department of Veterans Affairs)	$80,635	0.1%	Rank history: #14 in FY2021, not on the FY2022 list, #17 in FY2023, #40 in FY2024 and #16 in FY2025; down 24 since Aug 2024–Jul 2025.
41	Childs Engineering Corporation Top agencies DHS (Department of Homeland Security)	$72,950	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
42	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 4 since Aug 2024–Jul 2025.
43	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 8 since Aug 2024–Jul 2025.
44	Citrine-Olsson JV LLC Top agencies USDA (Department of Agriculture)	$22,960	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.

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 $60.6 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. 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