Company lists · Data refreshed September 2026

Top 25 Railway geotechnical engineers based in the United States

RevenueBase identified 71 railway geotechnical engineers headquartered in the United States as of September 2026 and tracks 1,452 professional contacts across them, including 473 with verified work emails. Columbia is the largest hub.

This list covers railway geotechnical engineers 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
71Companies
1,452Contacts tracked
473Verified emails
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The 25 largest railway geotechnical engineers based in the United States

Ranked by team size
Top 25 of 71 railway geotechnical engineers 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 railway geotechnical engineers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceSan Ramon, CA, United StatesHQ checked Sep 17, 2026201-500282 contacts →

Strong evidence

“ENGEO Incorporated is an award-winning, employee-owned comprehensive provider of more than 400 geotechnical and civil engineers, geologists, GIS experts, environmental scientists…”

Source: RevenueBase Database · checked Sep 17, 2026
2Strong evidenceDarien, CT, United StatesHQ checked Sep 17, 202651-20053 contacts →

Strong evidence

“At Terratek, we are leaders in geotechnical and structural engineering, providing innovative and customized solutions for projects around the world.”

Source: RevenueBase Database · checked Sep 17, 2026
3Indirect evidencePurcellville, VA, United StatesHQ checked Sep 17, 202651-20038 contacts →

Indirect evidence

“For career opportunities visit the career page on our website at GeoStructures exists to challenge conventional solutions and provide customers with innovative solutions to their…”

Source: RevenueBase Database · checked Sep 17, 2026
4Partial evidenceOrange, CA, United StatesHQ checked Sep 17, 202611-5037 contacts →

Partial evidence

“Zephyr Rail provides engineering services to support a variety of rail clients.* Track Design * Civil Engineering * Grade Crossing Design/PUC Permitting * Quiet Zones * 3rd Party…”

Source: RevenueBase Database · checked Sep 17, 2026
5Partial evidenceColumbus, OH, United StatesHQ checked Sep 17, 202651-20035 contacts →

Partial evidence

“Welcome to National Engineering & Architectural Services Inc.(NEAS Inc.).”

Source: RevenueBase Database · checked Sep 17, 2026
6Partial evidenceSanta Ana, CA, United StatesHQ checked Sep 17, 202611-5034 contacts →

Partial evidence

“Diaz•Yourman & Associates (DYA) is a privately-held geotechnical consulting services corporation, founded in December 1992.”

Source: RevenueBase Database · checked Sep 17, 2026
7Strong evidenceDallas, TX, United StatesHQ checked Sep 17, 202611-5034 contacts →

Strong evidence

“TexTerra Engineering is a North Texas consulting firm specializing in geotechnical engineering, construction materials testing, and inspection services.”

Source: RevenueBase Database · checked Sep 17, 2026
8Partial evidenceMurfreesboro, TN, United StatesHQ checked Sep 17, 202651-20033 contacts →

Partial evidence

“The mission of Railroad Consultants is to provide exceptional engineering and construction services to freight railroads, rail-served industry, port authorities, and passenger…”

Source: RevenueBase Database · checked Sep 17, 2026
9Indirect evidenceSan Carlos, CA, United StatesHQ checked Sep 17, 202611-5030 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
10Indirect evidenceSan Clemente, CA, United StatesHQ checked Sep 17, 202611-5028 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
11Strong evidenceJacksonville, FL, United StatesHQ checked Sep 17, 202611-5023 contacts →

Strong evidence

“CSI Geo has been providing geotechnical, construction materials testing, and construction engineering inspection services since 2007.”

Source: RevenueBase Database · checked Sep 17, 2026
12Partial evidenceColumbia, MO, United StatesHQ checked Sep 17, 202651-20023 contacts →

Partial evidence

“Since 1987, Capital Railroad Contracting has been your trusted railway construction partner.”

Source: RevenueBase Database · checked Sep 17, 2026
13Indirect evidenceRidgeland, MS, United StatesHQ checked Sep 17, 202651-20022 contacts →

Indirect evidence

“Burns Cooley Dennis, Inc.”

Source: RevenueBase Database · checked Sep 17, 2026
14Indirect evidenceThousand Oaks, CA, United StatesHQ checked Sep 17, 202611-5021 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
15Strong evidenceLexington, KY, United StatesHQ checked Sep 17, 202611-5019 contacts →

Strong evidence

“We are a distinguished civil engineering firm with a focus on geotechnical design expertise.”

Source: RevenueBase Database · checked Sep 17, 2026
16Strong evidenceFort Worth, TX, United StatesHQ checked Sep 17, 202611-5019 contacts →

Strong evidence

“High-Performance Engineering for High Profile Projects Founded in 1993, TSIT Engineering & Consulting, LLC (TSIT) provides geotechnical, material design, testing and inspection…”

Source: RevenueBase Database · checked Sep 17, 2026
17Strong evidenceTigard, OR, United StatesHQ checked Sep 17, 202611-5018 contacts →

Strong evidence

“GeoPacific Engineering, Inc.(GeoPacific) specializes in geotechnical engineering services, applied earth sciences, geoenvironmental services and geotechnical quality control…”

Source: RevenueBase Database · checked Sep 17, 2026
18Partial evidenceWellesley Hills, MA, United StatesHQ checked Sep 17, 202611-5018 contacts →

Partial evidence

“Reliance Engineers, LLC, established in 2013, is a multi-discipline engineering firm with principals each having many decades of exceptional industry experience.”

Source: RevenueBase Database · checked Sep 17, 2026
19Indirect evidenceOldsmar, FL, United StatesHQ checked Sep 17, 202651-20018 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
20Indirect evidenceSalt Lake City, UT, United StatesHQ checked Sep 17, 202611-5015 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
21Strong evidenceFredericksburg, United StatesHQ checked Sep 17, 202611-5015 contacts →

Strong evidence

Geotechnical Engineering - Foundation design, land development engineering, retaining wall design, pavement design, deep foundation design, slope stability analysis, stormwater…”

Source: RevenueBase Database · checked Sep 17, 2026
22Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 17, 20261-1011 contacts →

Indirect evidence

“Check out our webpage.”

Source: RevenueBase Database · checked Sep 17, 2026
23Indirect evidenceSaint Louis, MO, United StatesHQ checked Sep 17, 202611-5010 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
24Partial evidenceSarasota, FL, United StatesHQ checked Sep 17, 20261-1010 contacts →

Partial evidence

“RailcarCo is a dedicated consulting company highly specialized in rail engineering.”

Source: RevenueBase Database · checked Sep 17, 2026
25Strong evidenceSan Dimas, CA, United StatesHQ checked Sep 17, 202611-5010 contacts →

Strong evidence

“Geo-Advantec, Inc.(GAI) is a geotechnical engineering consultant that offers comprehensive services in various areas of geotechnical engineering, engineering geology, geotechnical…”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 71 railway geotechnical engineers based in the United States

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Railway geotechnical engineers based in the United States at a glance

As of Sep 17, 2026
32.6%Verified-email coverage
20.5Average contacts per company
11-50Median size (employees)
2.8%Largest-city concentration · Columbia
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
28
51-200
11
201-500
4

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 71 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 railway geotechnical engineers, 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 “railway geotechnical engineers”. 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 railway geotechnical engineers), 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 railway geotechnical engineers, 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, 473 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 railway geotechnical engineers, 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 railway geotechnical engineers are there based in the United States?

RevenueBase identified 71 railway geotechnical engineers 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?

ENGEO, headquartered in San Ramon, tops this list with the largest team on record.

Which city has the most railway geotechnical engineers?

Columbia leads with 2 headquartered companies, followed by Columbus (2) and Fort Worth (2).

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 473 verified decision-maker contacts tracked across these 71 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.