Company lists · Data refreshed September 2026

Top 25 Civil infrastructure consulting firms based in Irvine, United States

Name: Civil infrastructure consulting firms based in Irvine, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 66 companies tracked

RevenueBase identified 66 civil infrastructure consulting firms headquartered in Irvine, United States as of September 2026 and tracks 2,890 professional contacts across them, including 1,327 with verified work emails. Across the United States, Houston is the largest hub for this category (268 companies); Irvine has 66.

This list covers civil infrastructure consulting firms headquartered in Irvine, 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 28, 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 28, 2026 86% judged on-target in blind review

66Companies

2,890Contacts tracked

1,327Verified emails

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The 25 largest civil infrastructure consulting firms based in Irvine, United States

Ranked by team size

Top 25 of 66 civil infrastructure consulting firms based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to civil infrastructure consulting 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	Shimmick Corporation	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	760 contacts →
	Partial evidence “At Shimmick (NASDAQ: SHIM), we’re shaping the future of sustainable infrastructure through innovative solutions that advance communities and protect our environment.” Source: RevenueBase Database · checked Sep 28, 2026
2	LSA	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	201-500	332 contacts →
	Partial evidence “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Source: RevenueBase Database · checked Sep 28, 2026
3	Interwest Consulting Group	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	201-500	221 contacts →
	Partial evidence “Interwest specializes in providing professional and consulting services to public agencies across California, Nevada, Colorado, and beyond.” Source: RevenueBase Database · checked Sep 28, 2026
4	Fuscoe Engineering, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	201-500	216 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
5	IDS Group, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	205 contacts →
	Partial evidence “IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Source: RevenueBase Database · checked Sep 28, 2026
6	Leighton	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	190 contacts →
	Indirect evidence “Leighton, a Verdantas Company, provides environmental, geotechnical, materials testing, and special inspection services across the built community.” Source: RevenueBase Database · checked Sep 28, 2026
7	RBF Consulting, A Company Of Michael Baker International	Strong evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	176 contacts →
	Strong evidence “RBF Consulting, a Company of Michael Baker International, LLC, is one of the Nation's leading civil engineering, design, planning, surveying and construction management firms…” Source: RevenueBase Database · checked Sep 28, 2026
8	Murow Development Consultants, A Crede Company	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	91 contacts →
	Indirect evidence “Murow DC provides superior services in land development improvements, with a high level of experience, expertise, and trust.” Source: RevenueBase Database · checked Sep 28, 2026
9	Ficcadenti Waggoner And Castle Structural Engineers FWC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	60 contacts →
	Indirect evidence “FWC consists of over 70 professionals working to provide our clients with state-of-the-art structural engineering services.” Source: RevenueBase Database · checked Sep 28, 2026
10	VA Consulting, Inc., NOW Stantec	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	60 contacts →
	Partial evidence “VA Consulting has joined Stantec, an architecture and engineering firm with more than creative team members across North America and the world.” Source: RevenueBase Database · checked Sep 28, 2026
11	AKM Consulting Engineers	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	49 contacts →
	Partial evidence “Based in Irvine, California, AKM Consulting Engineers is a multidisciplinary firm providing expert engineering solutions to municipalities, public agencies, and state and federal…” Source: RevenueBase Database · checked Sep 28, 2026
12	Advantec Consulting Engineers, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	48 contacts →
	Partial evidence “At ADVANTEC Consulting Engineers, we are driven by a shared commitment to shaping smarter, safer, and more connected communities.” Source: RevenueBase Database · checked Sep 28, 2026
13	Linscott, LAW & Greenspan, Engineers	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	37 contacts →
	Indirect evidence “Linscott, Law & Greenspan, Engineers (LLG) provides transportation planning, traffic engineering and parking consultation services.” Source: RevenueBase Database · checked Sep 28, 2026
14	C&v Consulting, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	37 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
15	National Engineering & Consulting, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	20 contacts →
	Partial evidence “National Engineering and Consulting, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
16	Moote Companies LLC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Moote Companies was established from the foundations of The Moote Group which was started in 1974.” Source: RevenueBase Database · checked Sep 28, 2026
17	SGE Consulting Engineers	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Established in 1992, S.” Source: RevenueBase Database · checked Sep 28, 2026
18	N2w Engineering, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “We’re redefining what it means to partner with a consulting engineering firm.” Source: RevenueBase Database · checked Sep 28, 2026
19	OMB Electrical Engineers, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	17 contacts →
	Indirect evidence “LSW Engineers, located in Phoenix AZ has been providing Mechanical, Electrical, Plumbing, Technology and Commissioning Services for over 75 years.” Source: RevenueBase Database · checked Sep 28, 2026
20	TJW Engineering, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “TJW Engineering, Inc.(TJW), a California Corporation, is an engineering consulting firm that specializes in traffic engineering and transportation planning design and analysis.” Source: RevenueBase Database · checked Sep 28, 2026
21	Hushmand Associates, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Hushmand Associates, Incorporated (HAI) is a geotechnical and earthquake engineering consulting firm founded in 1990, that provides design services, construction support…” Source: RevenueBase Database · checked Sep 28, 2026
22	NCM Engineering Corp, NOW GFT	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “NCM Engineering, A TranSystems Company, serves the state, metropolitan planning organizations, rail authorities, transit districts, transportation joint power authorities…” Source: RevenueBase Database · checked Sep 28, 2026
23	Infrastrategies	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “InfraStrategies is built on the idea that experience and innovation are critical ingredients in improving mobility outcomes.” Source: RevenueBase Database · checked Sep 28, 2026
24	PBA Engineering	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “PBA is a full-service structural, mechanical, and plumbing engineering firm founded by Sharad T.” Source: RevenueBase Database · checked Sep 28, 2026
25	Murex Environmental	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Murex Environmental, Inc.” Source: RevenueBase Database · checked Sep 28, 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: civil infrastructure consulting 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 civil infrastructure consulting firms.
Partial evidence: Its own public description names part of civil infrastructure consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name civil infrastructure consulting 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 66 civil infrastructure consulting firms based in Irvine, United States

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Civil infrastructure consulting firms based in Irvine, United States at a glance

As of Sep 28, 2026

45.9%Verified-email coverage

43.8Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 66 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 civil infrastructure consulting 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 Irvine, United States whose own description of what they do matches “civil infrastructure consulting 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 civil infrastructure consulting 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 civil infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Irvine 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, 1,327 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 28, 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.

Civil infrastructure consulting 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 civil infrastructure consulting 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 civil infrastructure consulting firms are there based in Irvine, United States?

RevenueBase identified 66 civil infrastructure consulting firms headquartered in Irvine, 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?

Shimmick Corporation, headquartered in Irvine, tops this list with the largest team on record.

Which city in the United States has the most civil infrastructure consulting firms?

Houston leads the United States with 268 headquartered companies, followed by New York (206) and Austin (122). Irvine has 66.

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 1,327 verified decision-maker contacts tracked across these 66 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 28, 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.