Company lists · Data refreshed October 2026

Top 25 Grade separation contractors based in the United States

RevenueBase identified 285 company matches for grade separation contractors associated with the United States as of October 2026 and tracks 18,260 professional contacts across them, including 7,964 with verified work emails. Rancho Cordova is the largest hub.

This list covers company matches for grade separation contractors associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 13, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 13, 2026 How this list was built
285Companies
18,260Contacts tracked
7,964Verified emails
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The 25 largest grade separation contractors based in the United States

Ranked by team size
Top 25 of 285 company matches for grade separation contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 13, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchKansas City, MO, United StatesHQ recorded Oct 13, 20265,001-10,0007,638 contacts →

Exact match

“For over a century, HNTB has shaped the built environment with distinctive expertise across a full spectrum of infrastructure solutions.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
2Exact matchCharlotte, NC, United StatesHQ recorded Oct 13, 20261,001-5,0001,356 contacts →

Exact match

“The Lane Construction Corporation is one of America’s leading construction companies, specializing in large, complex civil infrastructure.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
3Exact matchEast Elmhurst, NY, United StatesHQ recorded Oct 13, 20261,001-5,000568 contacts →

Exact match

“OHLA USA is a leader in the construction industry, backed by a 100-year legacy of delivering complex civil infrastructure projects worldwide.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
4Exact matchCoppell, TX, United StatesHQ recorded Oct 13, 2026501-1,000489 contacts →

Exact match

“A leader in the heavy highway and transportation infrastructure industry for more than 100 years, Austin Bridge & Road specializes in complex urban highway interchanges, specialty…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
5Exact matchEvansville, IN, United StatesHQ recorded Oct 13, 2026201-500432 contacts →

Exact match

“William F.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
6Exact matchDuncan, SC, United StatesHQ recorded Oct 13, 20261,001-5,000418 contacts →

Exact match

“Reeves Construction Company is a regional leader in infrastructure improvements, performing work across the Southeast and Midwest.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
7Exact matchNanuet, NY, United StatesHQ recorded Oct 13, 2026201-500318 contacts →

Exact match

“Halmar International, where for more than 60 years the future of transportation infrastructure is built.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
8Exact matchDublin, CA, United StatesHQ recorded Oct 13, 2026501-1,000299 contacts →

Exact match

“DeSilva Gates Construction is an award-winning general engineering contractor that has been building large-scale infrastructure and residential projects in the San Francisco Bay…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
9Exact matchCoraopolis, PA, United StatesHQ recorded Oct 13, 2026501-1,000290 contacts →

Exact match

“American Bridge is a legendary construction company whose projects include a significant proportion of the world’s large bridges, marine installations, and other complex…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
10Exact matchMechanicsburg, PA, United StatesHQ recorded Oct 13, 2026201-500260 contacts →

Exact match

“Modjeski and Masters is a nationwide leader in the design, inspection, and rehabilitation of all bridges types, including long-span and movable structures.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
11Exact matchPittsburgh, PA, United StatesHQ recorded Oct 13, 202651-200253 contacts →

Exact match

“SAI launched our public works service with assignments for highway and bridge design and bridge inspection in 1964.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
12Exact matchPlain, WI, United StatesHQ recorded Oct 13, 2026501-1,000239 contacts →

Exact match

“A national reputation for quality and safety isn’t built overnight.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
13Exact matchYonkers, NY, United StatesHQ recorded Oct 13, 2026201-500201 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
14Exact matchLisle, IL, United StatesHQ recorded Oct 13, 2026201-500177 contacts →

Exact match

“Veritas Steel is a leader in the steel bridge fabrication industry with a broad range of experience in the manufacture of highly complex steel structures.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
15Exact matchGreat Falls, SC, United StatesHQ recorded Oct 13, 2026501-1,000176 contacts →

Exact match

“Celebrating 100 years in 2024, United Infrastructure Group is one of the leading firms in the Southeast with expertise in engineering, construction, and progressive/alternative…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
16Exact matchNewburgh, IN, United StatesHQ recorded Oct 13, 2026201-500149 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
17Exact matchMiami, FL, United StatesHQ recorded Oct 13, 202651-200142 contacts →

Exact match

“GLF Construction Corporation was incorporated in Miami, Florida, in 1993.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202651-200131 contacts →

Exact match

“OTHON is a multi-discipline civil engineering firm.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
19Exact matchWichita, KS, United StatesHQ recorded Oct 13, 2026201-500123 contacts →

Exact match

“For over 25 years, Wildcat Construction has been a regional leader in bridge building and rehabilitation, concrete structures, plant construction, storm and sanitary sewers, water…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
20Exact matchOverland Park, KS, United StatesHQ recorded Oct 13, 2026201-500117 contacts →

Exact match

“We are a leading national heavy civil, bridge, and marine contractor providing innovation and adding value in a variety of infrastructure markets.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
21Exact matchMedley, FL, United StatesHQ recorded Oct 13, 2026201-500101 contacts →

Exact match

“MasTec Civil (formerly Condotte America) is a heavy civil contractor delivering complex transportation and infrastructure projects that move communities forward across the…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
22Exact matchOpelika, AL, United StatesHQ recorded Oct 13, 2026201-500101 contacts →

Exact match

“Scott Bridge Company draws upon a 90-year legacy as one of the Southeast’s leading bridge and heavy civil contractors to provide construction and emergency response services for…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
23Exact matchAtglen, PA, United StatesHQ recorded Oct 13, 2026501-1,00089 contacts →

Exact match

“We started as a small family owned road construction company in 1945, and have grown to over 500 full time employees, but still remain family owned, and employee focused.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
24Exact matchSudbury, MA, United StatesHQ recorded Oct 13, 2026501-1,00087 contacts →

Exact match

“Northern Construction Service, LLC is a New England-based general contractor specializing in bridge construction, civil site development, marine infrastructure (ports and…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
25Exact matchPlantsville, CT, United StatesHQ recorded Oct 13, 2026201-50085 contacts →

Exact match

“Heavy Civil Construction company specializing in bridge construction (highways and railroad), Marine construction and transport, deep foundations, movable bridges, concrete…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase

Showing 25 of 285 grade separation contractors based in the United States

See the full list, filter by size, metro and specialty, and access 7,964 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Grade separation contractors based in the United States at a glance

As of Oct 13, 2026
43.6%Verified-email coverage
64.1Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · Rancho Cordova
Oct 13, 2026Page data refreshed

Companies by employee count

1-10
69
11-50
83
51-200
77
201-500
38
501-1,000
13
1,001-5,000
4
5,001-10,000
1

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 285 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “grade separation contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,964 professional contacts with verified work emails across the full matched dataset. 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 October 13, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “grade separation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many grade separation contractors are there based in the United States?

RevenueBase identified 285 company matches for grade separation contractors associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

HNTB tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most grade separation contractors?

Rancho Cordova leads with 4 company records, followed by Seattle (4) and Chicago (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,964 professional contacts with verified work emails tracked across these 285 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 13, 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 SmartSearch, 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.