Company lists · Data refreshed September 2026

Top 25 Infrastructure conglomerates based in Chicago, United States

Name: Infrastructure conglomerates based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 44 companies tracked

RevenueBase identified 44 infrastructure conglomerates headquartered in Chicago, United States as of September 2026 and tracks 10,200 professional contacts across them, including 4,183 with verified work emails. Houston is the largest hub.

This list covers infrastructure conglomerates 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 20, 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 20, 2026 86% judged on-target in blind review

44Companies

10,200Contacts tracked

4,183Verified emails

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The 25 largest infrastructure conglomerates based in Chicago, United States

Ranked by team size

Top 25 of 44 infrastructure conglomerates based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure conglomerates: 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	The Walsh Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	5,001-10,000	4,161 contacts →
	Indirect evidence “The Walsh Group is a 127-year-old company providing design, build, finance, operation and activation services.” Source: RevenueBase Database · checked Sep 20, 2026
2	Bechtel National INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	10001+	1,662 contacts →
	Indirect evidence “isit the Bechtel Corporation company page Bechtel is one of the most respected global engineering, construction, and project management companies.” Source: RevenueBase Database · checked Sep 20, 2026
3	Lochner	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	1,001-5,000	802 contacts →
	Partial evidence “Founded in 1944, Lochner is a trusted infrastructure services provider for aviation, surface transportation and water clients across the United States.” Source: RevenueBase Database · checked Sep 20, 2026
4	MEADE	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	1,001-5,000	594 contacts →
	Indirect evidence “Meade leads the field in design, construction and maintenance of electric, natural gas, and telecommunications delivery systems, both above and below ground and has done so for…” Source: RevenueBase Database · checked Sep 20, 2026
5	F.H. Paschen	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	575 contacts →
	Indirect evidence “F.H.” Source: RevenueBase Database · checked Sep 20, 2026
6	Primera Engineers	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	362 contacts →
	Indirect 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 20, 2026
7	Ardmore Roderick	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 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 20, 2026
8	Infrastructure Engineering INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 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 20, 2026
9	The Heico Companies LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	5,001-10,000	202 contacts →
	Indirect evidence “Heico has a long history of success.” Source: RevenueBase Database · checked Sep 20, 2026
10	D'escoto, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	156 contacts →
	Indirect evidence “d'Escoto, Inc, established in 1972 and incorporated in 1977, is a professional business enterprise offering multi-disciplinary design and construction services to public and…” Source: RevenueBase Database · checked Sep 20, 2026
11	R.M. Chin & Associates, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	136 contacts →
	Indirect evidence “R.M.” Source: RevenueBase Database · checked Sep 20, 2026
12	MZI Group, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	201-500	119 contacts →
	Indirect evidence “Proudly headquartered in the heart of Chicago, Illinois MZI Group, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
13	KDM Engineering	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 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 20, 2026
14	Singh Associates, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	110 contacts →
	Indirect 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 20, 2026
15	The Will Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	93 contacts →
	Indirect evidence “What We Do.” Source: RevenueBase Database · checked Sep 20, 2026
16	Transmart	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	81 contacts →
	Indirect evidence “Transportation is not just a branch at TranSmart, it’s our focus.” Source: RevenueBase Database · checked Sep 20, 2026
17	Ciorba Group, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	66 contacts →
	Indirect 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 20, 2026
18	Cera Solutions	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	30 contacts →
	Indirect evidence “CERA Solutions prides itself on being a diverse “Civil Solutions Company”.” Source: RevenueBase Database · checked Sep 20, 2026
19	Kwill Merchant Advisors	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	29 contacts →
	Indirect evidence “KWILL Merchant advisors is a closely held coalition of entrepreneurs, industry leaders and investors.” Source: RevenueBase Database · checked Sep 20, 2026
20	Reach Grow Exceed Engineering	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “Reach Grow Exceed Engineering (RGE) is a leading diversity-supplier that provides quality construction management and design services to our partners.” Source: RevenueBase Database · checked Sep 20, 2026
21	Apex Consulting Engineers, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	11-50	20 contacts →
	Partial 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 20, 2026
22	Pinpoint Precision Engineering	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 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 20, 2026
23	Knight E A, Inc. Member Of WSP	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	51-200	18 contacts →
	Indirect 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 20, 2026
24	10-4 Engineering, Pllc	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	1-10	9 contacts →
	Partial evidence “Structural design, inspection and rehab for infrastructure projects including bridges, retaining walls and building facilities.” Source: RevenueBase Database · checked Sep 20, 2026
25	Ullico Infrastructure Partners, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “Ullico Infrastructure Partners, LLC is a partnership of infrastructure investment professionals that, through the Ullico Infrastructure Fund, invest in and provide institutional…” Source: RevenueBase Database · checked Sep 20, 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: infrastructure conglomerates. 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 infrastructure conglomerates.
Partial evidence: Its own public description names part of infrastructure conglomerates, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure conglomerates. 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 44 infrastructure conglomerates based in Chicago, United States

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Infrastructure conglomerates based in Chicago, United States at a glance

As of Sep 20, 2026

41.0%Verified-email coverage

231.8Average contacts per company

51-200Median size (employees)

256.8%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 44 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 infrastructure conglomerates, 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 “infrastructure conglomerates”. 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 infrastructure conglomerates), 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 infrastructure conglomerates, 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, 4,183 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 20, 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.

Infrastructure conglomerates by metro in the United States

Infrastructure conglomerates in Houston113
Infrastructure conglomerates in New York108
Infrastructure conglomerates in Miami56
Infrastructure conglomerates in Chicago44
Infrastructure conglomerates in Dallas44
Infrastructure conglomerates in Los Angeles35
Infrastructure conglomerates in San Francisco35
Infrastructure conglomerates in San Antonio33
Infrastructure conglomerates in Phoenix32
Infrastructure conglomerates in Atlanta30
Infrastructure conglomerates in Washington29
Infrastructure conglomerates in Austin27

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 infrastructure conglomerates, 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 infrastructure conglomerates are there based in Chicago, United States?

RevenueBase identified 44 infrastructure conglomerates 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?

The Walsh Group, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most infrastructure conglomerates?

Houston leads with 113 headquartered companies, followed by New York (108) and Miami (56).

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 4,183 verified decision-maker contacts tracked across these 44 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 20, 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.