Company lists · Data refreshed September 2026

Top 25 Port infrastructure engineering firms based in the United States

Name: Port infrastructure 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 17, 2026 876 companies tracked

RevenueBase identified 876 port infrastructure engineering firms headquartered in the United States as of September 2026 and tracks 44,541 professional contacts across them, including 22,609 with verified work emails. Houston is the largest hub.

This list covers port infrastructure engineering firms 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

876Companies

44,541Contacts tracked

22,609Verified emails

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The 25 largest port infrastructure engineering firms based in the United States

Ranked by team size

Top 25 of 876 port infrastructure engineering firms 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 port infrastructure 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	Michael Baker International	Strong evidence	Pittsburgh, PA, United StatesHQ checked Sep 17, 2026	5,001-10,000	4,362 contacts →
	Strong 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	Kleinfelder	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,344 contacts →
	Indirect evidence “At Kleinfelder, we have been connecting great people to the best work since 1961.” Source: RevenueBase Database · checked Sep 17, 2026
3	Bowman Consulting	Strong evidence	Reston, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,666 contacts →
	Strong evidence “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Source: RevenueBase Database · checked Sep 17, 2026
4	Ulteig	Strong evidence	Fargo, ND, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,362 contacts →
	Strong evidence “Ulteig delivers comprehensive design engineering, program management and technical and field services that strengthen infrastructure vital to everyday life.” Source: RevenueBase Database · checked Sep 17, 2026
5	The Lane Construction Corporation	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,324 contacts →
	Partial evidence “The Lane Construction Corporation is one of America’s leading construction companies, specializing in large, complex civil infrastructure.” Source: RevenueBase Database · checked Sep 17, 2026
6	Walter P Moore	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “Welcome to Walter P Moore!” Source: RevenueBase Database · checked Sep 17, 2026
7	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
8	Moffatt & Nichol	Partial evidence	Long Beach, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,178 contacts →
	Partial evidence “Moffatt & Nichol is a leading U.S-based global infrastructure advisor specializing in the planning and design of facilities that shape and serve our coastlines, harbors and…” Source: RevenueBase Database · checked Sep 17, 2026
9	Hatch Mott Macdonald	Indirect evidence	Iselin, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	762 contacts →
	Indirect evidence “This page is now closed.” Source: RevenueBase Database · checked Sep 17, 2026
10	Manson Construction CO	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	501-1,000	592 contacts →
	Indirect evidence “Manson is one of the nation’s leading heavy civil marine construction and dredging companies.” Source: RevenueBase Database · checked Sep 17, 2026
11	Walker Consultants	Partial evidence	Hoffman Estates, IL, United StatesHQ checked Sep 17, 2026	201-500	540 contacts →
	Partial evidence “Walker Consultants provides planning, design, engineering, forensics, restoration and consulting for the built environment.” Source: RevenueBase Database · checked Sep 17, 2026
12	H&h	Strong evidence	New York, NY, United StatesHQ checked Sep 17, 2026	501-1,000	530 contacts →
	Strong evidence “With more than 139 years of experience, H&H is a trusted, full-service infrastructure engineering firm delivering complex, forward-looking solutions that advance our clients’…” Source: RevenueBase Database · checked Sep 17, 2026
13	Thomas & Hutton	Partial evidence	Savannah, GA, United StatesHQ checked Sep 17, 2026	501-1,000	491 contacts →
	Partial evidence “Our story began in 1946 with the collaboration of former US Army Corps of Engineers Officers, Hue Thomas and Joe Hutton, in their start-up engineering firm in Savannah, GA.” Source: RevenueBase Database · checked Sep 17, 2026
14	AI Engineers, INC	Indirect evidence	Middletown, CT, United StatesHQ checked Sep 17, 2026	201-500	491 contacts →
	Indirect evidence “Founded in 1991, AI Engineers provides comprehensive Bridge, Transportation, Construction Support, Water/Wastewater, Site/Civil, Building Systems, Design-Build, Survey/Mapping…” Source: RevenueBase Database · checked Sep 17, 2026
15	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
16	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
17	Ttl, INC	Strong evidence	Tuscaloosa, AL, United StatesHQ checked Sep 17, 2026	201-500	442 contacts →
	Strong 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
18	Collins Engineers, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	201-500	432 contacts →
	Indirect evidence “In 1979, Collins Engineers, Inc.” 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	AMT Engineering	Partial evidence	Rockville, MD, United StatesHQ checked Sep 17, 2026	501-1,000	358 contacts →
	Partial evidence “AMT is recognized as an Engineering News Record (ENR) Top 500 Design Firm and among the Largest Engineering Firms in Greater Washington by the Washington Business Journal.” 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	Delve Underground	Partial evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	201-500	311 contacts →
	Partial evidence “Delve Underground is a leader in heavy civil engineering, serving the transportation, water, wastewater, and energy industries.” Source: RevenueBase Database · checked Sep 17, 2026
23	Halmar International	Partial evidence	Nanuet, NY, United StatesHQ checked Sep 17, 2026	201-500	290 contacts →
	Partial evidence “Halmar International, where for more than 60 years the future of transportation infrastructure is built.” Source: RevenueBase Database · checked Sep 17, 2026
24	Christopher B. Burke Engineering, LTD	Indirect evidence	Rosemont, IL, United StatesHQ checked Sep 17, 2026	201-500	267 contacts →
	Indirect evidence “Christopher B.” Source: RevenueBase Database · checked Sep 17, 2026
25	Kisinger Campo & Associates, Corp. KCA	Partial evidence	Tampa, FL, United StatesHQ checked Sep 17, 2026	201-500	265 contacts →
	Partial evidence “KCA is a multidisciplinary engineering firm with offices throughout the Southeastern United States.” 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: port infrastructure 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 port infrastructure engineering firms.
Partial evidence: Its own public description names part of port infrastructure engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name port infrastructure 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 876 port infrastructure engineering firms based in the United States

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Port infrastructure engineering firms based in the United States at a glance

As of Sep 17, 2026

50.8%Verified-email coverage

50.8Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

320

11-50

306

51-200

163

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 876 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 port infrastructure 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 the United States whose own description of what they do matches “port infrastructure 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 port infrastructure 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 port infrastructure engineering firms, 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, 22,609 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.

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 port infrastructure 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 port infrastructure engineering firms are there based in the United States?

RevenueBase identified 876 port infrastructure engineering firms 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 port infrastructure engineering firms?

Houston leads with 22 headquartered companies, followed by Miami (20) and New York (20).

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 22,609 verified decision-maker contacts tracked across these 876 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.