Company lists · Data refreshed October 2026

Top 25 Highway engineering consultants based in the United States

RevenueBase identified 4,591 company matches for highway engineering consultants associated with the United States as of October 2026 and tracks 170,956 professional contacts across them, including 84,293 with verified work emails. Houston is the largest hub.

This list covers company matches for highway engineering consultants associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 14, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 14, 2026 How this list was built
4,591Companies
170,956Contacts tracked
84,293Verified emails
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The 25 largest highway engineering consultants based in the United States

Ranked by team size
Top 25 of 4,591 company matches for highway engineering consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 14, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchOlathe, KS, United StatesHQ recorded Oct 14, 20265,001-10,0006,380 contacts →

Exact match

“Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
2Exact matchPittsburgh, PA, United StatesHQ recorded Oct 14, 20265,001-10,0004,415 contacts →

Exact match

“Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
3Exact matchChantilly, VA, United StatesHQ recorded Oct 14, 20261,001-5,0002,259 contacts →

Exact match

“ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Oct 14, 20261,001-5,0002,148 contacts →

Exact match

“Employee-Owned.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
5Exact matchSparks, MD, United StatesHQ recorded Oct 14, 20261,001-5,0001,851 contacts →

Exact match

“KCI is a 100-percent employee-owned engineering, consulting and construction firm serving clients throughout the United States and beyond.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
6Exact matchAlbany, NY, United StatesHQ recorded Oct 14, 20261,001-5,0001,733 contacts →

Exact match

“CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
7Exact matchServing Clients Across The Us, MD, United StatesHQ recorded Oct 14, 20261,001-5,0001,725 contacts →

Exact match

“Johnson, Mirmiran & Thompson is an employee owned, multi-disciplined firm offering a full array of planning, design, and construction phase consulting services for infrastructure…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
8Exact matchBaltimore, MD, United StatesHQ recorded Oct 14, 20261,001-5,0001,721 contacts →

Exact match

“RK & K is a full-service planning, engineering, environmental, and construction management/inspection firm serving a wide range of clients throughout the United States.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
9Exact matchOrlando, FL, United StatesHQ recorded Oct 14, 20261,001-5,0001,643 contacts →

Exact match

“UES provides professional engineering, environmental, testing and inspection services to clients across the United States.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
10Exact matchNorth Little Rock, AR, United StatesHQ recorded Oct 14, 20261,001-5,0001,533 contacts →

Exact match

“Founded in 1919, Garver is an employee-owned engineering, planning, and environmental services firm focused on aviation, transportation, buildings, federal, water and wastewater…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Oct 14, 20261,001-5,0001,404 contacts →

Exact match

“Welcome to Walter P Moore!”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
12Exact matchMelville, NY, United StatesHQ recorded Oct 14, 20261,001-5,0001,379 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
13Exact matchMobile, AL, United StatesHQ recorded Oct 14, 20261,001-5,0001,201 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Oct 14, 20261,001-5,0001,134 contacts →

Exact match

“Ranked No.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
15Exact matchMinneapolis, MN, United StatesHQ recorded Oct 14, 20261,001-5,0001,133 contacts →

Exact match

“Forge ahead.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
16Exact matchPortland, OR, United StatesHQ recorded Oct 14, 2026501-1,0001,068 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
17Exact matchHomestead, PA, United StatesHQ recorded Oct 14, 2026501-1,0001,009 contacts →

Exact match

“Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
18Exact matchPeachtree Corners, GA, United StatesHQ recorded Oct 14, 2026501-1,000986 contacts →

Exact match

“Pond, an ENERCON company, is a full-service consulting firm that has provided integrated engineering, architecture, planning, and construction management solutions to public and…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
19Exact matchSeattle, WA, United StatesHQ recorded Oct 14, 2026501-1,000889 contacts →

Exact match

“The right team is more than an advantage.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
20Exact matchEncinitas, CA, United StatesHQ recorded Oct 14, 2026501-1,000807 contacts →

Exact match

“Dudek is an environmental, planning, and engineering consulting firm.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
21Exact matchIselin, NJ, United StatesHQ recorded Oct 14, 20261,001-5,000785 contacts →

Exact match

“This page is now closed.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
22Exact matchDetroit, MI, United StatesHQ recorded Oct 14, 2026501-1,000783 contacts →

Exact match

“At Wade Trim, we are committed to maximizing the value of your infrastructure investment.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
23Exact matchLos Angeles, CA, United StatesHQ recorded Oct 14, 2026501-1,000769 contacts →

Exact match

“Our award-winning projects are produced through innovation, creativity, and technical expertise.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
24Exact matchOakland, CA, United StatesHQ recorded Oct 14, 2026501-1,000750 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
25Exact matchMelville, NY, United StatesHQ recorded Oct 14, 2026501-1,000685 contacts →

Exact match

“About H2M H2M architects + engineers is a multi-disciplinary professional consulting and design firm, proud of its long history of client service and consistent ability to meet…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase

Showing 25 of 4,591 highway engineering consultants based in the United States

See the full list, filter by size, metro and specialty, and access 84,293 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Highway engineering consultants based in the United States at a glance

As of Oct 14, 2026
49.3%Verified-email coverage
37.2Average contacts per company
11-50Median size (employees)
2.6%Largest-city concentration · Houston
Oct 14, 2026Page data refreshed

Companies by employee count

1-10
1,868
11-50
1,782
51-200
707
201-500
129
501-1,000
52
1,001-5,000
41
5,001-10,000
4
10001+
1

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 4,591 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “highway engineering consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 84,293 professional contacts with verified work emails across the full matched dataset. 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 October 14, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “highway engineering consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many highway engineering consultants are there based in the United States?

RevenueBase identified 4,591 company matches for highway engineering consultants associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Terracon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most highway engineering consultants?

Houston leads with 118 company records, followed by New York (79) and Austin (55).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 84,293 professional contacts with verified work emails tracked across these 4,591 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 14, 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 SmartSearch, 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.