Company lists · Data refreshed September 2026

Top 25 Rail engineering consultants based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 964 companies tracked

RevenueBase identified 964 rail engineering consultants headquartered in the United States as of September 2026 and tracks 40,989 professional contacts across them, including 18,564 with verified work emails. New York is the largest hub.

This list covers rail engineering consultants 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 17, 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 17, 2026 86% judged on-target in blind review

964Companies

40,989Contacts tracked

18,564Verified emails

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The 25 largest rail engineering consultants based in the United States

Ranked by team size

Top 25 of 964 rail engineering consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to rail engineering consultants: 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	Michael Baker International	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 17, 2026	5,001-10,000	4,362 contacts →
	Partial evidence “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Source: RevenueBase Database · checked Sep 17, 2026
2	CHA Consulting, INC	Partial evidence	Albany, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,639 contacts →
	Partial evidence “CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…” Source: RevenueBase Database · checked Sep 17, 2026
3	GPI Greenman-Pedersen, INC	Partial evidence	Melville, NY, United StatesHQ checked Sep 17, 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 17, 2026
4	Halcrow	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	10001+	1,256 contacts →
	Indirect evidence “Halcrow is now Jacobs.” Source: RevenueBase Database · checked Sep 17, 2026
5	Volkert, INC	Indirect evidence	Mobile, AL, United StatesHQ checked Sep 17, 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 17, 2026
6	GAI Consultants, INC	Strong evidence	Homestead, PA, United StatesHQ checked Sep 17, 2026	501-1,000	964 contacts →
	Strong evidence “Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…” Source: RevenueBase Database · checked Sep 17, 2026
7	Wade Trim	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 17, 2026	501-1,000	758 contacts →
	Indirect evidence “At Wade Trim, we are committed to maximizing the value of your infrastructure investment.” Source: RevenueBase Database · checked Sep 17, 2026
8	Railworks Corporation	Partial evidence	New York, NY, United StatesHQ checked Sep 17, 2026	1,001-5,000	721 contacts →
	Partial evidence “RailWorks builds and maintains rail transportation infrastructure that keeps people and goods moving across the United States and Canada.” Source: RevenueBase Database · checked Sep 17, 2026
9	Crawford, Murphy & Tilly	Partial evidence	Springfield, IL, United StatesHQ checked Sep 17, 2026	201-500	515 contacts →
	Partial evidence “Established in 1946, Crawford, Murphy & Tilly is an engineering and consulting firm.” Source: RevenueBase Database · checked Sep 17, 2026
10	Railpros	Strong evidence	Irving, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	481 contacts →
	Strong evidence “RailPros was founded in and is exclusively focused on providing rail and transit engineering and construction services.” Source: RevenueBase Database · checked Sep 17, 2026
11	Lockwood, Andrews & Newnam, Inc. LAN	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 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 17, 2026
12	Ayres Associates	Indirect evidence	Eau Claire, WI, United StatesHQ checked Sep 17, 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 17, 2026
13	Strand Associates, INC	Indirect evidence	Madison, WI, United StatesHQ checked Sep 17, 2026	501-1,000	443 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
14	Ttl, INC	Partial evidence	Tuscaloosa, AL, United StatesHQ checked Sep 17, 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 17, 2026
15	Remington & Vernick Engineers	Indirect evidence	Cherry Hill, NJ, United StatesHQ checked Sep 17, 2026	501-1,000	438 contacts →
	Indirect evidence “Founded in 1901, RVE has grown to be an industry leader with 500 team members in offices throughout New Jersey, Pennsylvania, Delaware, Maryland and North Carolina.” Source: RevenueBase Database · checked Sep 17, 2026
16	Mccormick Taylor, INC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 2026	201-500	434 contacts →
	Partial evidence “McCormick Taylor is a full-service civil engineering firm providing creative design, planning, and environmental solutions to the challenges of everyday life.” Source: RevenueBase Database · checked Sep 17, 2026
17	Holland, L.P	Indirect evidence	Crete, IL, United StatesHQ checked Sep 17, 2026	501-1,000	427 contacts →
	Indirect evidence “Since our founding in 1935, Holland has pioneered delivering comprehensive and progressive transportation solutions.” Source: RevenueBase Database · checked Sep 17, 2026
18	Infrastructure Consulting & Engineering	Partial evidence	West Columbia, SC, United StatesHQ checked Sep 17, 2026	501-1,000	425 contacts →
	Partial evidence “Founded in 2005, Infrastructure Consulting & Engineering, LLC (ICE) provides transportation consulting and engineering services across the Southeast.” Source: RevenueBase Database · checked Sep 17, 2026
19	Burns Engineering, INC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 17, 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 17, 2026
20	Primera Engineers	Partial evidence	Chicago, IL, United StatesHQ checked Sep 17, 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 17, 2026
21	Metric Engineering	Partial evidence	Miami, FL, United StatesHQ checked Sep 17, 2026	201-500	345 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
22	TRC Worldwide Engineering, INC	Partial evidence	Brentwood, PA, United StatesHQ checked Sep 17, 2026	201-500	316 contacts →
	Partial evidence “Founded in 1989, TRC Worldwide Engineering, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
23	Oliver Wyman Vector	Partial evidence	Westlake, TX, United StatesHQ checked Sep 17, 2026	51-200	294 contacts →
	Partial evidence “Oliver Wyman Vector offers top-tier technical consulting and services to the aviation, aerospace, defense, and rail sectors worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
24	PGH Wong Engineering, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	201-500	286 contacts →
	Partial evidence “Founded in 1985, PGH Wong Engineering, Inc.(PGH Wong) is one of the nation’s leading firms in the transit industry.” Source: RevenueBase Database · checked Sep 17, 2026
25	Ardmore Roderick	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	201-500	264 contacts →
	Indirect evidence “Ardmore Roderick is a full-service infrastructure solutions partner delivering design, construction management, and program management services to the transportation, utility…” Source: RevenueBase Database · checked Sep 17, 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: rail engineering consultants. 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 rail engineering consultants.
Partial evidence: Its own public description names part of rail engineering consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name rail engineering consultants. 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 964 rail engineering consultants based in the United States

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Rail engineering consultants based in the United States at a glance

As of Sep 17, 2026

45.3%Verified-email coverage

42.5Average contacts per company

11-50Median size (employees)

3.2%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

410

11-50

313

51-200

167

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 964 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 rail engineering consultants, 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 “rail engineering consultants”. 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 rail engineering consultants), 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 rail engineering consultants, 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, 18,564 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 17, 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.

Rail engineering consultants by metro

Rail engineering consultants in New York31
Rail engineering consultants in Houston26

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 rail engineering consultants, 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 rail engineering consultants are there based in the United States?

RevenueBase identified 964 rail engineering consultants 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?

Michael Baker International, headquartered in Pittsburgh, tops this list with the largest team on record.

Which city has the most rail engineering consultants?

New York leads with 31 headquartered companies, followed by Houston (26) and Chicago (23).

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 18,564 verified decision-maker contacts tracked across these 964 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 17, 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.