Company lists · Data refreshed September 2026

Top 25 Transportation engineering firms based in Chicago, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 57 companies tracked

RevenueBase identified 57 transportation engineering firms headquartered in Chicago, United States as of September 2026 and tracks 2,706 professional contacts across them, including 1,381 with verified work emails. Houston is the largest hub.

This list covers transportation engineering firms headquartered in Chicago, 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 19, 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 19, 2026 86% judged on-target in blind review

57Companies

2,706Contacts tracked

1,381Verified emails

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The 25 largest transportation engineering firms based in Chicago, United States

Ranked by team size

Top 25 of 57 transportation engineering firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transportation engineering firms: 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	Collins Engineers, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	201-500	432 contacts →
	Indirect evidence “In 1979, Collins Engineers, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
2	Primera Engineers	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	201-500	362 contacts →
	Strong 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 19, 2026
3	Ardmore Roderick	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	201-500	264 contacts →
	Partial 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 19, 2026
4	Infrastructure Engineering INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	201-500	224 contacts →
	Partial evidence “Infrastructure Engineering Inc.(IEI) is a majority African American-owned, multi-disciplinary consulting firm with offices in eight states that delivers design engineering…” Source: RevenueBase Database · checked Sep 19, 2026
5	R.M. Chin & Associates, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	136 contacts →
	Indirect evidence “R.M.” Source: RevenueBase Database · checked Sep 19, 2026
6	KDM Engineering	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	114 contacts →
	Partial evidence “Founded upon a vision of challenging and changing the energy infrastructure to help light up the world, KDM specializes in engineering consulting and design, program and project…” Source: RevenueBase Database · checked Sep 19, 2026
7	Singh Associates, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	110 contacts →
	Partial evidence “For more than 30 years, SINGH + Associates has been meeting and exceeding our clients’ expectations for high quality planning, design and engineering services delivered with care…” Source: RevenueBase Database · checked Sep 19, 2026
8	Transmart	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	81 contacts →
	Partial evidence “Transportation is not just a branch at TranSmart, it’s our focus.” Source: RevenueBase Database · checked Sep 19, 2026
9	Environmental Design International INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	68 contacts →
	Indirect evidence “Clients can trust Environmental Design International inc.(EDI) to be responsive, demonstrate technical excellence, adhere to the demands of budgets and schedules, and offer…” Source: RevenueBase Database · checked Sep 19, 2026
10	Ciorba Group, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	66 contacts →
	Partial evidence “Ciorba Group has been providing professional engineering services to various state and local governmental agencies for over 95 years.” Source: RevenueBase Database · checked Sep 19, 2026
11	Dynasty Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	60 contacts →
	Indirect evidence “Dynasty Group, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
12	Rubinos & Mesia Engineers RME	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	49 contacts →
	Partial evidence “RUBINOS & MESIA ENGINEERS, INC.(RME), a MBE, was established in 1982 as a Chicago based Structural / Civil Engineering and Construction Management Firm.” Source: RevenueBase Database · checked Sep 19, 2026
13	Specialty Consulting, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	37 contacts →
	Partial evidence “Specialty Consulting, Inc.(SPC) is a Hispanic–owned, infrastructure engineering and scientific consulting firm based in Chicago.” Source: RevenueBase Database · checked Sep 19, 2026
14	Quandel Consultants	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	32 contacts →
	Strong evidence “Quandel Consultants isn’t just another transportation engineering firm.” Source: RevenueBase Database · checked Sep 19, 2026
15	Antero Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “Civil Engineering \| Urban & Rural Planning \| Economic Development \| Grant Services \| Branding & Marketing \| Environmental Antero Group is an interdisciplinary firm that integrates…” Source: RevenueBase Database · checked Sep 19, 2026
16	American Surveying & Engineering, LTD	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	26 contacts →
	Strong evidence “Multi-disciplined consulting firm specializing in a wide range of professional services such as Transportation Engineering and Surveying, Storm Water Management, terrestrial LiDAR…” Source: RevenueBase Database · checked Sep 19, 2026
17	Lakeshore Engineering, LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1-10	26 contacts →
	Indirect evidence “Led by a licensed civil engineer with over 30+ years of combined design and construction management experience.” Source: RevenueBase Database · checked Sep 19, 2026
18	Orion Engineers, Pllc	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “Orion Engineers, PLLC is a civil, structural & construction engineering consulting firm based in the Midwest delivering planning, design, and construction management services to…” Source: RevenueBase Database · checked Sep 19, 2026
19	Reaghan Engineering	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “Reaghan Engineering is a multi-disciplinary civil engineering consultancy, who work closely with clients across the globe to deliver innovative and cost effective solutions.” Source: RevenueBase Database · checked Sep 19, 2026
20	Apex Consulting Engineers, LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	20 contacts →
	Strong evidence “APEX Consulting Engineers, LLC is a licensed professional engineering and design firm based in Illinois, specializing in civil infrastructure solutions for the Transportation…” Source: RevenueBase Database · checked Sep 19, 2026
21	Pinpoint Precision Engineering	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Pinpoint Precision was founded on the principles of using innovation and young creative minds to produce a better product for clients and consumers.” Source: RevenueBase Database · checked Sep 19, 2026
22	Knight E A, Inc. Member Of WSP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	18 contacts →
	Partial evidence “Knight is a full-service engineering and architectural firm providing design, planning and management services to both public and private clients from our offices in Illinois and…” Source: RevenueBase Database · checked Sep 19, 2026
23	APS Consulting INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
24	Garza Karhoff Engineering, LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Strong evidence “Garza Karhoff Engineering, LLC (GKE) is a Hispanic-woman owned business providing structural and civil engineering consulting services in the transportation and building sectors.” Source: RevenueBase Database · checked Sep 19, 2026
25	Perry & Associates, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Perry & Associates, LLC is a structural engineering firm providing a wide variety of design and technical consulting services.” Source: RevenueBase Database · checked Sep 19, 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: transportation engineering firms. 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 transportation engineering firms.
Partial evidence: Its own public description names part of transportation engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transportation engineering firms. 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 57 transportation engineering firms based in Chicago, United States

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Transportation engineering firms based in Chicago, United States at a glance

As of Sep 19, 2026

51.0%Verified-email coverage

47.5Average contacts per company

11-50Median size (employees)

212.3%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 57 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 transportation engineering firms, 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 Chicago, United States whose own description of what they do matches “transportation engineering firms”. 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 transportation engineering firms), 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 transportation engineering firms, and records with no verified work email. Companies headquartered outside Chicago 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, 1,381 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 19, 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.

Transportation engineering firms by metro in the United States

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 transportation engineering firms, 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 transportation engineering firms are there based in Chicago, United States?

RevenueBase identified 57 transportation engineering firms headquartered in Chicago, 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?

Collins Engineers, INC, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most transportation engineering firms?

Houston leads with 121 headquartered companies, followed by New York (86) and Austin (59).

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 1,381 verified decision-maker contacts tracked across these 57 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 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 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.