Company lists · Data refreshed September 2026

Top 25 Highway engineering staffing companies based in the United States

Name: Highway engineering staffing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 2,241 companies tracked

RevenueBase identified 2,241 highway engineering staffing companies headquartered in the United States as of September 2026 and tracks 86,818 professional contacts across them, including 38,374 with verified work emails. Houston is the largest hub.

This list covers highway engineering staffing companies 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 28, 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 28, 2026 86% judged on-target in blind review

2,241Companies

86,818Contacts tracked

38,374Verified emails

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The 25 largest highway engineering staffing companies based in the United States

Ranked by team size

Top 25 of 2,241 highway engineering staffing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to highway engineering staffing companies: 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	Terracon	Partial evidence	Olathe, KS, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,113 contacts →
	Partial evidence “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Source: RevenueBase Database · checked Sep 28, 2026
2	JMT	Indirect evidence	Serving Clients Across The Us, MD, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,688 contacts →
	Indirect evidence “Johnson, Mirmiran & Thompson is an employee owned, multi-disciplined firm offering a full array of planning, design, and construction phase consulting services for infrastructure…” Source: RevenueBase Database · checked Sep 28, 2026
3	Rk&k	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,641 contacts →
	Partial evidence “RK & K is a full-service planning, engineering, environmental, and construction management/inspection firm serving a wide range of clients throughout the United States.” Source: RevenueBase Database · checked Sep 28, 2026
4	Garver	Partial evidence	North Little Rock, AR, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,499 contacts →
	Partial evidence “Founded in 1919, Garver is an employee-owned engineering, planning, and environmental services firm focused on aviation, transportation, buildings, federal, water and wastewater…” Source: RevenueBase Database · checked Sep 28, 2026
5	GPI Greenman-Pedersen, INC	Partial evidence	Melville, NY, United StatesHQ checked Sep 28, 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 28, 2026
6	Volkert, INC	Indirect evidence	Mobile, AL, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,199 contacts →
	Indirect evidence “Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…” Source: RevenueBase Database · checked Sep 28, 2026
7	TRS Staffing Solutions	Strong evidence	Greenville, United StatesHQ checked Sep 28, 2026	201-500	1,187 contacts →
	Strong evidence “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Source: RevenueBase Database · checked Sep 28, 2026
8	David Evans And Associates, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	501-1,000	1,031 contacts →
	Indirect evidence “Since its founding in 1976 in Portland, Oregon, DEA has become a recognized leader for progressive and sustainable design and management solutions for complex transportation, land…” Source: RevenueBase Database · checked Sep 28, 2026
9	Pond & Company	Partial evidence	Peachtree Corners, GA, United StatesHQ checked Sep 28, 2026	501-1,000	985 contacts →
	Partial evidence “Pond, an ENERCON company, is a full-service consulting firm that has provided integrated engineering, architecture, planning, and construction management solutions to public and…” Source: RevenueBase Database · checked Sep 28, 2026
10	Hatch Mott Macdonald	Indirect evidence	Iselin, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	762 contacts →
	Indirect evidence “This page is now closed.” Source: RevenueBase Database · checked Sep 28, 2026
11	Quiddity	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	501-1,000	683 contacts →
	Partial evidence “Quiddity is an award-winning, full-service civil engineering, planning, surveying, and consulting firm providing innovative solutions for public infrastructure and private…” Source: RevenueBase Database · checked Sep 28, 2026
12	C&s Companies	Partial evidence	Syracuse, NY, United StatesHQ checked Sep 28, 2026	501-1,000	657 contacts →
	Partial evidence “Founded in 1968, the C&S Companies are known nationwide for client-focused engineering, architecture, planning, environmental, and construction services.” Source: RevenueBase Database · checked Sep 28, 2026
13	Hirequest Direct	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 28, 2026	n/a	618 contacts →
	Indirect evidence “HireQuest Direct specializes in day labor, general labor, disaster recovery, skilled labor, janitorial, site clean-up, composite crew, demolition, administrative, hospitality…” Source: RevenueBase Database · checked Sep 28, 2026
14	Whitman, Requardt And Associates, LLP	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 28, 2026	501-1,000	601 contacts →
	Partial evidence “Established in 1915, WRA is a nationally-recognized engineering, architectural and environmental planning firm with a reputation for delivering exceptional work on time and within…” Source: RevenueBase Database · checked Sep 28, 2026
15	Neel-Schaffer, INC	Partial evidence	Jackson, MS, United StatesHQ checked Sep 28, 2026	501-1,000	591 contacts →
	Partial evidence “Neel-Schaffer is a multi-disciplined engineering, planning and construction management firm that was founded in 1983 and today is one of the largest private, employee-owned…” Source: RevenueBase Database · checked Sep 28, 2026
16	BKF Engineers	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 28, 2026	501-1,000	588 contacts →
	Indirect evidence “BKF is the premier A/E/C firm in the Western United States-built on over 110 years of excellence and a vision for the future.” Source: RevenueBase Database · checked Sep 28, 2026
17	DOWL	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 28, 2026	501-1,000	547 contacts →
	Indirect evidence “For more than 60 years, it has been the quality of our people that defines the DOWL difference.” Source: RevenueBase Database · checked Sep 28, 2026
18	T&m Associates	Partial evidence	Middletown, NJ, United StatesHQ checked Sep 28, 2026	201-500	516 contacts →
	Partial evidence “T&M Associates is a leading engineering and technical services firm focused on innovative solutions that advance our clients’ goals and sustain communities.” Source: RevenueBase Database · checked Sep 28, 2026
19	KSA	Partial evidence	Longview, TX, United StatesHQ checked Sep 28, 2026	51-200	508 contacts →
	Partial evidence “We Build People Who Build the Future KSA is an industry leader, providing a broad range of engineering, architecture, planning, surveying, and construction management services.” Source: RevenueBase Database · checked Sep 28, 2026
20	Austin Bridge & Road	Partial evidence	Coppell, TX, United StatesHQ checked Sep 28, 2026	501-1,000	498 contacts →
	Partial evidence “A leader in the heavy highway and transportation infrastructure industry for more than 100 years, Austin Bridge & Road specializes in complex urban highway interchanges, specialty…” Source: RevenueBase Database · checked Sep 28, 2026
21	Trillium Construction Services	Indirect evidence	Kalamazoo, MI, United StatesHQ checked Sep 28, 2026	201-500	494 contacts →
	Indirect evidence “Trillium Construction Services has over a quarter of a century of experience in the construction recruiting industry.” Source: RevenueBase Database · checked Sep 28, 2026
22	Thomas & Hutton	Partial evidence	Savannah, GA, United StatesHQ checked Sep 28, 2026	501-1,000	491 contacts →
	Partial evidence “Our story began in 1946 with the collaboration of former US Army Corps of Engineers Officers, Hue Thomas and Joe Hutton, in their start-up engineering firm in Savannah, GA.” Source: RevenueBase Database · checked Sep 28, 2026
23	AI Engineers, INC	Indirect evidence	Middletown, CT, United StatesHQ checked Sep 28, 2026	201-500	491 contacts →
	Indirect evidence “Founded in 1991, AI Engineers provides comprehensive Bridge, Transportation, Construction Support, Water/Wastewater, Site/Civil, Building Systems, Design-Build, Survey/Mapping…” Source: RevenueBase Database · checked Sep 28, 2026
24	Entegee	Partial evidence	Burlington, MA, United StatesHQ checked Sep 28, 2026	201-500	468 contacts →
	Partial evidence “For the last sixty years Entegee has provided Fortune 500 and other companies with highly qualified engineering and technical personnel.” Source: RevenueBase Database · checked Sep 28, 2026
25	Lockwood, Andrews & Newnam, Inc. LAN	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	201-500	461 contacts →
	Partial evidence “Lockwood, Andrews & Newnam, Inc.(LAN) is a full-service consulting firm offering planning, engineering and program management services.” Source: RevenueBase Database · checked Sep 28, 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: highway engineering staffing companies. 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 highway engineering staffing companies.
Partial evidence: Its own public description names part of highway engineering staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name highway engineering staffing companies. 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 2,241 highway engineering staffing companies based in the United States

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Highway engineering staffing companies based in the United States at a glance

As of Sep 28, 2026

44.2%Verified-email coverage

38.7Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

893

11-50

775

51-200

407

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,241 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 highway engineering staffing companies, 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 “highway engineering staffing companies”. 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 highway engineering staffing companies), 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 highway engineering staffing companies, 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, 38,374 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 28, 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.

Highway engineering staffing companies 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 highway engineering staffing companies, 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 highway engineering staffing companies are there based in the United States?

RevenueBase identified 2,241 highway engineering staffing companies 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?

Terracon, headquartered in Olathe, tops this list with the largest team on record.

Which city has the most highway engineering staffing companies?

Houston leads with 65 headquartered companies, followed by New York (33) and Miami (32).

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 38,374 verified decision-maker contacts tracked across these 2,241 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 28, 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.