Company lists · Data refreshed September 2026

Top 25 Transportation engineering firms based in the United States

Name: Transportation engineering firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 4,916 companies tracked

RevenueBase identified 4,916 company matches for transportation engineering firms associated with the United States as of September 2026 and tracks 262,767 professional contacts across them, including 118,979 with verified work emails. Houston is the largest hub.

This list covers company matches for transportation engineering firms 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 September 19, 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 Sep 19, 2026 How this list was built

4,916Companies

262,767Contacts tracked

118,979Verified emails

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The 25 largest transportation engineering firms based in the United States

Ranked by team size

Top 25 of 4,916 company matches for transportation engineering firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Kiewit	Exact match	Omaha, NE, United StatesHQ recorded Sep 19, 2026	10001+	19,465 contacts →
	Exact match “At Kiewit, the projects we deliver make a difference, and we offer opportunities for you to make one, too.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Ch2m	Exact match	Englewood, CO, United StatesHQ recorded Sep 19, 2026	10001+	8,088 contacts →
	Exact match “CH2M is now Jacobs.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	URS Corporation, An Aecom Company	Exact match	San Francisco, CA, United StatesHQ recorded Sep 19, 2026	10001+	7,706 contacts →
	Exact match “URS Corporation operations are now affiliated with AECOM.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	CDM Smith	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	5,001-10,000	7,527 contacts →
	Exact match “CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Sep 19, 2026	5,001-10,000	6,113 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Michael Baker International	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 19, 2026	5,001-10,000	4,362 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 · Sep 19, 2026 · View company records in RevenueBase
7	STV	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	3,556 contacts →
	Exact match “STV offers professional services for the infrastructure that powers our lives.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	TYLIN	Exact match	San Francisco, CA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	3,067 contacts →
	Exact match “As a global engineering firm, we design infrastructure solutions that connect and elevate communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Kleinfelder	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,344 contacts →
	Exact match “At Kleinfelder, we have been connecting great people to the best work since 1961.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	VHB	Exact match	Watertown, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,277 contacts →
	Exact match “We are VHB.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,210 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	KCI	Exact match	Sparks, NC, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,207 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 · Sep 19, 2026 · View company records in RevenueBase
13	Olsson	Exact match	Lincoln, NE, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,108 contacts →
	Exact match “Olsson is an engineering firm made up of people who craft expert solutions and designs that improve communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,985 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	LJA	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,932 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	JMT	Exact match	Serving Clients Across The Us, MD, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,688 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 · Sep 19, 2026 · View company records in RevenueBase
17	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,666 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Rk&k	Exact match	Baltimore, MD, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,641 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 · Sep 19, 2026 · View company records in RevenueBase
19	CHA Consulting, INC	Exact match	Albany, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,639 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 · Sep 19, 2026 · View company records in RevenueBase
20	Garver	Exact match	North Little Rock, AR, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,499 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 · Sep 19, 2026 · View company records in RevenueBase
21	Ulteig	Exact match	Fargo, ND, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,362 contacts →
	Exact match “Ulteig delivers comprehensive design engineering, program management and technical and field services that strengthen infrastructure vital to everyday life.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Mead & Hunt	Exact match	Middleton, WI, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,355 contacts →
	Exact match “Mead & Hunt provides clients with expert planning, architecture design, engineering, environmental and construction administration services across a wide variety of market…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	GPI Greenman-Pedersen, INC	Exact match	Melville, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,354 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 · Sep 19, 2026 · View company records in RevenueBase
24	The Lane Construction Corporation	Exact match	Charlotte, NC, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,324 contacts →
	Exact match “The Lane Construction Corporation is one of America’s leading construction companies, specializing in large, complex civil infrastructure.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Walter P Moore	Exact match	Houston, TX, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,298 contacts →
	Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “transportation engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 4,916 transportation engineering firms based in the United States

See the full list, filter by size, metro and specialty, and access 118,979 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Transportation engineering firms based in the United States at a glance

As of Sep 19, 2026

45.3%Verified-email coverage

53.5Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

2,026

11-50

1,785

51-200

774

201-500

175

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 4,916 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 “transportation engineering firms” 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 118,979 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 September 19, 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.

Transportation engineering firms by metro

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 “transportation engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many transportation engineering firms are there based in the United States?

RevenueBase identified 4,916 company matches for transportation engineering firms associated with the United States as of September 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?

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

Which city has the most transportation engineering firms?

Houston leads with 121 company records, followed by New York (89) and Austin (59).

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 118,979 professional contacts with verified work emails tracked across these 4,916 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 September 19, 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.