Company lists · Data refreshed September 2026

Top 25 Structural engineers based in the United States

Name: Structural engineers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 3,541 companies tracked

RevenueBase identified 3,541 structural engineers headquartered in the United States as of September 2026 and tracks 62,760 professional contacts across them, including 30,804 with verified work emails. New York is the largest hub.

This list covers structural engineers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

3,541Companies

62,760Contacts tracked

30,804Verified emails

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The 25 largest structural engineers based in the United States

Ranked by team size

Top 25 of 3,541 structural engineers based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to structural engineers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Thornton Tomasetti	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	1,001-5,000	2,122 contacts →
	Partial evidence “We apply scientific and engineering principles to solve the world’s challenges, starting with yours.” Source: RevenueBase Database · checked Sep 22, 2026
2	Colliers Engineering & Design	Partial evidence	Holmdel, NJ, United StatesHQ checked Sep 22, 2026	1,001-5,000	2,049 contacts →
	Partial evidence “Colliers Engineering & Design, an affiliate of Colliers, is a trusted provider of multi-discipline engineering and architecture, design and consulting services to public and…” Source: RevenueBase Database · checked Sep 22, 2026
3	IMEG	Partial evidence	Rock Island, IL, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,985 contacts →
	Partial evidence “Leaders in Engineering and Innovation.” Source: RevenueBase Database · checked Sep 22, 2026
4	GPI Greenman-Pedersen, INC	Partial evidence	Melville, NY, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,354 contacts →
	Partial evidence “With a staff of over 1,800 professionals, Greenman-Pedersen, Inc.(GPI) is a leading engineering consulting firm that specializes in the innovative design and construction of…” Source: RevenueBase Database · checked Sep 22, 2026
5	Walter P Moore	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “Welcome to Walter P Moore!” Source: RevenueBase Database · checked Sep 22, 2026
6	Simpson Gumpertz & Heger SGH	Partial evidence	Waltham, MA, United StatesHQ checked Sep 22, 2026	501-1,000	942 contacts →
	Partial evidence “Simpson Gumpertz & Heger (SGH) is a national engineering firm committed to delivering holistic advice for our clients’ most complex challenges.” Source: RevenueBase Database · checked Sep 22, 2026
7	Wiss, Janney, Elstner Associates, INC	Partial evidence	Northbrook, IL, United StatesHQ checked Sep 22, 2026	501-1,000	895 contacts →
	Partial evidence “Founded in 1956, Wiss, Janney, Elstner Associates (WJE) is an interdisciplinary firm of engineers, architects, and materials scientists committed to helping clients solve, repair…” Source: RevenueBase Database · checked Sep 22, 2026
8	Schnabel Engineering	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 22, 2026	501-1,000	707 contacts →
	Indirect evidence “Schnabel is a trusted partner in building the foundation for project success.” Source: RevenueBase Database · checked Sep 22, 2026
9	Walker Consultants	Partial evidence	Hoffman Estates, IL, United StatesHQ checked Sep 22, 2026	201-500	540 contacts →
	Partial evidence “Walker Consultants provides planning, design, engineering, forensics, restoration and consulting for the built environment.” Source: RevenueBase Database · checked Sep 22, 2026
10	Nova Engineering And Environmental, LLC	Partial evidence	Kennesaw, GA, United StatesHQ checked Sep 22, 2026	501-1,000	518 contacts →
	Partial evidence “Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Source: RevenueBase Database · checked Sep 22, 2026
11	Desimone Consulting Engineering	Strong evidence	New York, NY, United StatesHQ checked Sep 22, 2026	501-1,000	512 contacts →
	Strong evidence “Founded in New York City in 1969, DeSimone provides structural engineering, façade and building envelope consulting, vertical transportation consulting, forensics, structural…” Source: RevenueBase Database · checked Sep 22, 2026
12	Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C	Indirect evidence	Mountainville, United StatesHQ checked Sep 22, 2026	501-1,000	487 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
13	Ayres Associates	Indirect evidence	Eau Claire, WI, United StatesHQ checked Sep 22, 2026	201-500	458 contacts →
	Indirect evidence “In 1959, Owen Ayres founded Ayres Associates atop a steadfast foundation of honesty, innovation, and good old-fashioned hard work – and a vision for a firm that revolved around…” Source: RevenueBase Database · checked Sep 22, 2026
14	Ttl, INC	Partial evidence	Tuscaloosa, AL, United StatesHQ checked Sep 22, 2026	201-500	442 contacts →
	Partial evidence “Founded in 1964, TTL is an engineering design firm focused on delivering integrated infrastructure solutions for public and private clients.” Source: RevenueBase Database · checked Sep 22, 2026
15	Lerch Bates INC	Indirect evidence	Highlands Ranch, CO, United StatesHQ checked Sep 22, 2026	201-500	441 contacts →
	Indirect evidence “Lerch Bates is the global multidisciplinary technical consultancy saving time and money for those designing, modernizing, investigating, or managing buildings.” Source: RevenueBase Database · checked Sep 22, 2026
16	Collins Engineers, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 22, 2026	201-500	432 contacts →
	Partial evidence “In 1979, Collins Engineers, Inc.” Source: RevenueBase Database · checked Sep 22, 2026
17	DCI Engineers	Strong evidence	Seattle, WA, United StatesHQ checked Sep 22, 2026	201-500	404 contacts →
	Strong evidence “DCI Engineers has been providing client-focused structural and civil engineering services for over three decades.” Source: RevenueBase Database · checked Sep 22, 2026
18	Burns Engineering, INC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 22, 2026	201-500	401 contacts →
	Partial evidence “Burns is a nationally respected provider of specialized engineering services, bringing highly-technical, sought-after engineering expertise to transportation, critical…” Source: RevenueBase Database · checked Sep 22, 2026
19	Primera Engineers	Partial evidence	Chicago, IL, United StatesHQ checked Sep 22, 2026	201-500	362 contacts →
	Partial evidence “Primera Engineers is a mid-size, full-service, woman-owned (WBE) engineering design and consulting firm specializing in four areas of expertise: buildings, transportation…” Source: RevenueBase Database · checked Sep 22, 2026
20	Osborn Engineering	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 22, 2026	201-500	360 contacts →
	Partial evidence “Established over a century ago in 1892, Osborn is proud to be one of the nation’s oldest engineering firms, continuing a tradition of excellence through outstanding quality in…” Source: RevenueBase Database · checked Sep 22, 2026
21	Degenkolb Engineers	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	201-500	332 contacts →
	Partial evidence “Founded in 1940, Degenkolb Engineers’ practice reflects more than eight decades of commitment to expertise, client service, and life-long learning.” Source: RevenueBase Database · checked Sep 22, 2026
22	TRC Worldwide Engineering, INC	Partial evidence	Brentwood, PA, United StatesHQ checked Sep 22, 2026	201-500	316 contacts →
	Partial evidence “Founded in 1989, TRC Worldwide Engineering, Inc.” Source: RevenueBase Database · checked Sep 22, 2026
23	Delve Underground	Partial evidence	Seattle, WA, United StatesHQ checked Sep 22, 2026	201-500	311 contacts →
	Partial evidence “Delve Underground is a leader in heavy civil engineering, serving the transportation, water, wastewater, and energy industries.” Source: RevenueBase Database · checked Sep 22, 2026
24	Wallace Design Collective	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 22, 2026	201-500	289 contacts →
	Indirect evidence “fantastic people.” Source: RevenueBase Database · checked Sep 22, 2026
25	ENGEO	Partial evidence	San Ramon, CA, United StatesHQ checked Sep 22, 2026	201-500	282 contacts →
	Partial evidence “ENGEO Incorporated is an award-winning, employee-owned comprehensive provider of more than 400 geotechnical and civil engineers, geologists, GIS experts, environmental scientists…” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: structural engineers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names structural engineers.
Partial evidence: Its own public description names part of structural engineers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name structural engineers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 3,541 structural engineers based in the United States

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Structural engineers based in the United States at a glance

As of Sep 22, 2026

49.1%Verified-email coverage

17.7Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · New York

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

1,978

11-50

1,178

51-200

315

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,541 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among structural engineers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “structural engineers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names structural engineers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among structural engineers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 30,804 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Structural engineers by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names structural engineers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many structural engineers are there based in the United States?

RevenueBase identified 3,541 structural engineers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Thornton Tomasetti, headquartered in New York, tops this list with the largest team on record.

Which city has the most structural engineers?

New York leads with 95 headquartered companies, followed by Houston (77) and Los Angeles (48).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 30,804 verified decision-maker contacts tracked across these 3,541 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.