Company lists · Data refreshed October 2026

Top 25 Environmental transportation consultants based in the United States

Name: Environmental transportation consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 998 companies tracked

RevenueBase identified 998 company matches for environmental transportation consultants associated with the United States as of October 2026 and tracks 44,824 professional contacts across them, including 23,290 with verified work emails. New York is the largest hub.

This list covers company matches for environmental transportation 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 12, 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 12, 2026 How this list was built

998Companies

44,824Contacts tracked

23,290Verified emails

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The 25 largest environmental transportation consultants based in the United States

Ranked by team size

Top 25 of 998 company matches for environmental transportation consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	WSP In The U.S	Exact match	New York, NY, United StatesHQ recorded Oct 12, 2026	10001+	10,184 contacts →
	Exact match “What if you could shape built and natural environments – and the future of those that use them?” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	VHB	Exact match	Watertown, MA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,379 contacts →
	Exact match “We are VHB.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Civil & Environmental Consultants, INC	Exact match	Moon Township, PA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,204 contacts →
	Exact match “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,661 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	GAI Consultants, INC	Exact match	Homestead, PA, United StatesHQ recorded Oct 12, 2026	501-1,000	1,009 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 12, 2026 · View company records in RevenueBase
6	Parametrix	Exact match	Seattle, WA, United StatesHQ recorded Oct 12, 2026	501-1,000	899 contacts →
	Exact match “At Parametrix, we help our clients imagine what's possible.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	DUDEK	Exact match	Encinitas, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	807 contacts →
	Exact match “Dudek is an environmental, planning, and engineering consulting firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Psomas	Exact match	Los Angeles, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	769 contacts →
	Exact match “Our award-winning projects are produced through innovation, creativity, and technical expertise.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Environmental Science Associates	Exact match	San Francisco, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	730 contacts →
	Exact match “ESA is a 100% employee-owned environmental consulting firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Tighe & Bond	Exact match	Westfield, MA, United StatesHQ recorded Oct 12, 2026	501-1,000	666 contacts →
	Exact match “Tighe & Bond is the Northeast’s leading engineering, environmental, planning, and design consulting firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	MSA Professional Services	Exact match	Baraboo, WI, United StatesHQ recorded Oct 12, 2026	501-1,000	637 contacts →
	Exact match “As a full-service consulting firm, MSA Professional Services (MSA) is all about creating communities that work.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	BSC Group	Exact match	Boston, MA, United StatesHQ recorded Oct 12, 2026	51-200	513 contacts →
	Exact match “BSC Group, Inc.(BSC) is a multidisciplinary consulting firm with a staff of more than 200 professionals and offices in Boston, Worcester, Andover, and West Yarmouth, MA, as well…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Rincon Consultants	Exact match	Ventura, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	502 contacts →
	Exact match “Rincon Consultants is a multidisciplinary environmental, planning, and advisory firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	SRF Consulting Group	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 12, 2026	201-500	476 contacts →
	Exact match “SRF Consulting Group is a full-service consulting firm with a broad base of award-winning services, including- Transportation and Transit Planning - Community and Land Use…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Mccormick Taylor, INC	Exact match	Philadelphia, PA, United StatesHQ recorded Oct 12, 2026	201-500	445 contacts →
	Exact match “McCormick Taylor is a full-service civil engineering firm providing creative design, planning, and environmental solutions to the challenges of everyday life.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Infrastructure Consulting & Engineering	Exact match	West Columbia, SC, United StatesHQ recorded Oct 12, 2026	501-1,000	430 contacts →
	Exact match “Founded in 2005, Infrastructure Consulting & Engineering, LLC (ICE) provides transportation consulting and engineering services across the Southeast.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Kittelson & Associates, INC	Exact match	Portland, OR, United StatesHQ recorded Oct 12, 2026	201-500	429 contacts →
	Exact match “We solve complex transportation problems to improve people's everyday lives.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	P2s	Exact match	Long Beach, CA, United StatesHQ recorded Oct 12, 2026	201-500	381 contacts →
	Exact match “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Barton & Loguidice	Exact match	Liverpool, NY, United StatesHQ recorded Oct 12, 2026	201-500	375 contacts →
	Exact match “Barton & Loguidice is a multidisciplinary consulting firm providing technical services to public and private clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Metric Engineering	Exact match	Miami, FL, United StatesHQ recorded Oct 12, 2026	201-500	356 contacts →
	Exact match “Metric was founded in 1976 on the principle of providing personalized consulting engineering services "done right the first time and every time." Today, we are among the top…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	LSA	Exact match	Irvine, CA, United StatesHQ recorded Oct 12, 2026	201-500	348 contacts →
	Exact match “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	OTAK	Exact match	Portland, OR, United StatesHQ recorded Oct 12, 2026	201-500	344 contacts →
	Exact match “Otak values people, both those in our workplace and those that are impacted by the projects we undertake.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Environmental Consulting & Technology, Inc. ECT	Exact match	Gainesville, FL, United StatesHQ recorded Oct 12, 2026	201-500	330 contacts →
	Exact match “Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	CME Associates	Exact match	Parlin, NJ, United StatesHQ recorded Oct 12, 2026	201-500	282 contacts →
	Exact match “CME Associates, with eight (8) office locations throughout New Jersey, provides a complete range of Environmental, Geotechnical, Engineering, Surveying and Planning services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Matrix Design Group, INC	Exact match	Colorado Springs, CO, United StatesHQ recorded Oct 12, 2026	201-500	275 contacts →
	Exact match “Matrix Design Group is an employee-owned planning, engineering, and consulting firm that helps communities, governments, and organizations plan, design, and deliver the systems…” Recorded in the RevenueBase company graph · Oct 12, 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 “environmental transportation consultants”. 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 998 environmental transportation consultants based in the United States

See the full list, filter by size, metro and specialty, and access 23,290 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental transportation consultants based in the United States at a glance

As of Oct 12, 2026

52.0%Verified-email coverage

44.9Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · New York

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

536

11-50

306

51-200

105

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 998 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 “environmental transportation 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 23,290 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 12, 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.

Environmental transportation consultants by metro

Environmental transportation consultants in New York25

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

How many environmental transportation consultants are there based in the United States?

RevenueBase identified 998 company matches for environmental transportation 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?

WSP In The U.S tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most environmental transportation consultants?

New York leads with 25 company records, followed by Houston (19) and Seattle (18).

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 23,290 professional contacts with verified work emails tracked across these 998 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 12, 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.