Company lists · Data refreshed September 2026
Top 25 Subway tunnel contractors worldwide
RevenueBase identified 121 subway tunnel contractors worldwide as of September 2026 and tracks 6,398 professional contacts across them, including 2,762 with verified work emails and 0 with mobile numbers. The United States is the largest market and Rome the largest hub.
This list covers subway tunnel contractors worldwide, 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 18, 2026. Country and city lists for subway tunnel contractors follow the table.
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.
The 25 largest subway tunnel contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,322 contacts → | ||||
Partial evidence “Herrenknecht is a technology and market leader in the area of mechanized tunnelling systems.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 2 | 669 contacts → | ||||
Partial evidence “Founded in 1894, Ghella is a major Italian global force recognized for its excellence in the construction of large-scale public infrastructure and expertise in the use of Tunnel…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 3 | 504 contacts → | ||||
Indirect evidence “Die Wayss & Freytag Ingenieurbau AG ist eines der führenden deutschen Bauunternehmen.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 4 | 326 contacts → | ||||
Strong evidence “SAK Construction is one of the largest privately held pipeline rehabilitation and tunneling contractors in the U.S.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 5 | 311 contacts → | ||||
Indirect evidence “Delve Underground is a leader in heavy civil engineering, serving the transportation, water, wastewater, and energy industries.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 6 | 290 contacts → | ||||
Indirect evidence “Halmar International, where for more than 60 years the future of transportation infrastructure is built.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 7 | 273 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 8 | 264 contacts → | ||||
Indirect evidence “With 70 years of innovation and experience, Robbins is the world’s foremost developer and manufacturer of advanced, underground construction machinery.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 9 | 217 contacts → | ||||
Strong evidence “Drill Tech Drilling & Shoring, Inc.(DTDS) is a full service Engineering Contractor founded in 1994 Specializing in tunneling, shafts, deep foundation, ground improvement, and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 10 | 166 contacts → | ||||
Indirect evidence “GEODATA is a multi-disciplinary company with an Italian origin and a global footprint, specialized in providing high-quality consultancy services and solutions for the development…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 11 | 134 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 12 | 82 contacts → | ||||
Indirect evidence “Creating Space Underground®” has been our mission and our passion for 25 years.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 13 | 81 contacts → | ||||
Indirect evidence “J.W.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 14 | 79 contacts → | ||||
Indirect evidence “Rocksoil is design, consulting and technical assistance.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 15 | 77 contacts → | ||||
Partial evidence “Jay Dee Contractors (Jay Dee) is a family-owned company and a leader in heavy underground construction serving clients across the United States and Canada since 1965.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 16 | 70 contacts → | ||||
Indirect evidence “Established in 1982, CES has installed thousands of miles of underground fiber optic, conventional power and communication cable.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 17 | 62 contacts → | ||||
Indirect evidence “COGEIS SPA is a medium-size Italian construction company founded in 1963 in Quincinetto (Turin), in the Northwest of Italy.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 18 | 55 contacts → | ||||
Indirect evidence “With over 60 years of pioneering excellence in underground construction, Ric-Man has established itself as a leader in the industry, renowned for our innovative approaches and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 19 | 53 contacts → | ||||
Indirect evidence “LJB Underground Services (Aldea) provides expert technical resources for design and construction management, of heavy civil underground projects and risk management of all major…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 20 | 50 contacts → | ||||
Partial evidence “This year marks 25 years of engineering excellence at Gall Zeidler Consultants (GZ)-a global leader in tunnel design, engineering, geotechnics, tunnel rehabilitation, and program…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 21 | 45 contacts → | ||||
Strong evidence “Bradshaw Construction Corporation is a leading contractor in the tunneling industry.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 22 | 42 contacts → | ||||
Partial evidence “Baresel Tunnelbau GmbH Die Baresel Tunnelbau GmbH ist einer der führenden Anbieter im Tunnelbau für die Region D/A/CH.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 23 | 42 contacts → | ||||
Indirect evidence “Established in 1976, we at Aaron Enterprises, Inc.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 24 | 40 contacts → | ||||
Partial evidence “Kilduff Underground Engineering (KUE) was established in 2014 by Todd Kilduff, PE, to support contractors, A/E firms and owners.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 25 | 38 contacts → | ||||
Partial evidence “civil engineering company undertaking works in; Rail Mining Tunnelling Project management consultancy design” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
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: subway tunnel contractors. 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 subway tunnel contractors.
- Partial evidence
- Its own public description names part of subway tunnel contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name subway tunnel contractors. 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 121 subway tunnel contractors worldwide
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Subway tunnel contractors worldwide at a glance
As of Sep 18, 2026Companies by employee count
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 subway tunnel contractors, 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.
- Coverage
- 3 countries, largest first: the United States, Germany, Italy. Country and city lists for subway tunnel contractors are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “subway tunnel contractors”. 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 subway tunnel contractors), 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 subway tunnel contractors, and records with no verified work email.
- 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, 2,762 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 18, 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.
Subway tunnel contractors by location
3 lists · largest firstEvery Subway tunnel contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 subway tunnel contractors, 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 subway tunnel contractors are there worldwide?
RevenueBase identified 121 subway tunnel contractors worldwide 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?
Herrenknecht AG, headquartered in Schwanau, tops this list with the largest team on record.
Which country has the most subway tunnel contractors?
The United States leads with 65 companies, followed by Germany (29) and Italy (27). Every subway tunnel contractors list by country and city is linked on this page.
Which city has the most subway tunnel contractors?
Rome leads with 4 headquartered companies, followed by Houston (3) and Bochum (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 2,762 verified decision-maker contacts tracked across these 121 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 18, 2026.
Ready to reach these companies? Verified emails and direct dials for all 121 subway tunnel contractors worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 subway tunnel contractors worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 121 matching company records for subway tunnel contractors worldwide, with 6,398 tracked contacts and 2,762 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 18, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 subway tunnel contractors worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Herrenknecht AGherrenknecht.com HQ: Schwanau, GermanyReported employees: 1,001-5,000 | Schwanau, Germany | 1,001-5,000 | Exact match | 1,322 contacts → |
“Herrenknecht is a technology and market leader in the area of mechanized tunnelling systems.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Ghellaghella.com HQ: Roma, ItalyReported employees: 5,001-10,000 | Roma, Italy | 5,001-10,000 | Exact match | 669 contacts → |
“Founded in 1894, Ghella is a major Italian global force recognized for its excellence in the construction of large-scale public infrastructure and expertise in the use of Tunnel…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Wayss & Freytag Ingenieurbau AGwf-ib.de HQ: Frankfurt, GermanyReported employees: 1,001-5,000 | Frankfurt, Germany | 1,001-5,000 | Exact match | 504 contacts → |
“Die Wayss & Freytag Ingenieurbau AG ist eines der führenden deutschen Bauunternehmen.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | SAK Construction, LLCsakcon.com HQ: O Fallon, MO, United StatesReported employees: 501-1,000 | O Fallon, MO, United States | 501-1,000 | Exact match | 326 contacts → |
“SAK Construction is one of the largest privately held pipeline rehabilitation and tunneling contractors in the U.S.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Delve Undergrounddelveunderground.comHQ: Seattle, WA, United StatesReported employees: 201-500 | Seattle, WA, United States | 201-500 | Exact match | 311 contacts → |
“Delve Underground is a leader in heavy civil engineering, serving the transportation, water, wastewater, and energy industries.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Halmar Internationalhalmarinternational.comHQ: Nanuet, NY, United StatesReported employees: 201-500 | Nanuet, NY, United States | 201-500 | Exact match | 290 contacts → |
“Halmar International, where for more than 60 years the future of transportation infrastructure is built.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Frontier-Kemper Constructors, INCfrontierkemper.com HQ: Sylmar, CA, United StatesReported employees: 201-500 | Sylmar, CA, United States | 201-500 | Exact match | 273 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | Robbinsrobbinstbm.com HQ: Solon, OH, United StatesReported employees: 501-1,000 | Solon, OH, United States | 501-1,000 | Exact match | 264 contacts → |
“With 70 years of innovation and experience, Robbins is the world’s foremost developer and manufacturer of advanced, underground construction machinery.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: Antioch, CA, United StatesReported employees: 201-500 | Antioch, CA, United States | 201-500 | Exact match | 217 contacts → |
“Drill Tech Drilling & Shoring, Inc.(DTDS) is a full service Engineering Contractor founded in 1994 Specializing in tunneling, shafts, deep foundation, ground improvement, and…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  ARX - Geodatageodata.itHQ: Torino, ItalyReported employees: 201-500 | Torino, Italy | 201-500 | Exact match | 166 contacts → |
“GEODATA is a multi-disciplinary company with an Italian origin and a global footprint, specialized in providing high-quality consultancy services and solutions for the development…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cipa S.P.Acipaspa.it HQ: Roma, ItalyReported employees: 201-500 | Roma, Italy | 201-500 | Exact match | 134 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 |  Brierley Associates Corporationbrierleyassociates.comHQ: Englewood, CO, United StatesReported employees: 51-200 | Englewood, CO, United States | 51-200 | Exact match | 82 contacts → |
“Creating Space Underground®” has been our mission and our passion for 25 years.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  JW Fowlerjwfowler.comHQ: Dallas, OR, United StatesReported employees: 201-500 | Dallas, OR, United States | 201-500 | Exact match | 81 contacts → |
“J.W.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Rocksoil S.P.Arocksoil.comHQ: 20122 Milano, ItalyReported employees: 51-200 | 20122 Milano, Italy | 51-200 | Exact match | 79 contacts → |
“Rocksoil is design, consulting and technical assistance.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | JAY DEE Contractors INCjaydee.us HQ: Livonia, MI, United StatesReported employees: 201-500 | Livonia, MI, United States | 201-500 | Exact match | 77 contacts → |
“Jay Dee Contractors (Jay Dee) is a family-owned company and a leader in heavy underground construction serving clients across the United States and Canada since 1965.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Corby Energy Services INCcorbyenergy.com HQ: Belleville, MI, United StatesReported employees: 201-500 | Belleville, MI, United States | 201-500 | Exact match | 70 contacts → |
“Established in 1982, CES has installed thousands of miles of underground fiber optic, conventional power and communication cable.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Cogeis SPAcogeis.it HQ: Quincinetto, ItalyReported employees: 201-500 | Quincinetto, Italy | 201-500 | Exact match | 62 contacts → |
“COGEIS SPA is a medium-size Italian construction company founded in 1963 in Quincinetto (Turin), in the Northwest of Italy.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ric-Man Construction, INCric-man.com HQ: Sterling Heights, MI, United StatesReported employees: 51-200 | Sterling Heights, MI, United States | 51-200 | Exact match | 55 contacts → |
“With over 60 years of pioneering excellence in underground construction, Ric-Man has established itself as a leader in the industry, renowned for our innovative approaches and…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  LJB Underground Services Aldea Services INCaldeaservices.comHQ: Frederick, MD, United StatesReported employees: 201-500 | Frederick, MD, United States | 201-500 | Exact match | 53 contacts → |
“LJB Underground Services (Aldea) provides expert technical resources for design and construction management, of heavy civil underground projects and risk management of all major…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Gall Zeidler Consultantsgzconsultants.com HQ: Ashburn, VA, United StatesReported employees: 51-200 | Ashburn, VA, United States | 51-200 | Exact match | 50 contacts → |
“This year marks 25 years of engineering excellence at Gall Zeidler Consultants (GZ)-a global leader in tunnel design, engineering, geotechnics, tunnel rehabilitation, and program…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Bradshaw Construction Corporationbradshawcc.com HQ: Eldersburg, MD, United StatesReported employees: 51-200 | Eldersburg, MD, United States | 51-200 | Exact match | 45 contacts → |
“Bradshaw Construction Corporation is a leading contractor in the tunneling industry.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Baresel Tunnelbau Gmbhbaresel.de HQ: Leinfelden-echterdingen, GermanyReported employees: 201-500 | Leinfelden-echterdingen, Germany | 201-500 | Exact match | 42 contacts → |
“Baresel Tunnelbau GmbH Die Baresel Tunnelbau GmbH ist einer der führenden Anbieter im Tunnelbau für die Region D/A/CH.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Aaron Enterprises, INCaaronenterprises.comHQ: York, PA, United StatesReported employees: 51-200 | York, PA, United States | 51-200 | Exact match | 42 contacts → |
“Established in 1976, we at Aaron Enterprises, Inc.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Kilduff Underground Engineering, INCkilduffunderground.comHQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 40 contacts → |
“Kilduff Underground Engineering (KUE) was established in 2014 by Todd Kilduff, PE, to support contractors, A/E firms and owners.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Specialist Engineering Services Limitedses-holdings.com HQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 38 contacts → |
“civil engineering company undertaking works in; Rail Mining Tunnelling Project management consultancy design” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 121 company matches
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Subway tunnel contractors: dataset insights
September 18, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
121 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 18, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Subway tunnel contractors by location
3 lists · largest firstEvery Subway tunnel contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for subway tunnel contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many subway tunnel contractors did RevenueBase find worldwide?
The saved snapshot records 121 matching company records, 6,398 tracked contacts and 2,762 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 18, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 subway tunnel contractors worldwide. Snapshot: September 18, 2026. https://revenuebase.ai/companies/browse/subway-tunnel-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 subway tunnel contractors worldwide
RevenueBase records 121 matching company records for subway tunnel contractors worldwide, with 6,398 tracked contacts and 2,762 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 18, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 subway tunnel contractors worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Herrenknecht AGherrenknecht.com HQ: Schwanau, GermanyReported employees: 1,001-5,000 | Schwanau, Germany | 1,001-5,000 | Exact match | 1,322 contacts → |
“Herrenknecht is a technology and market leader in the area of mechanized tunnelling systems.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Ghellaghella.com HQ: Roma, ItalyReported employees: 5,001-10,000 | Roma, Italy | 5,001-10,000 | Exact match | 669 contacts → |
“Founded in 1894, Ghella is a major Italian global force recognized for its excellence in the construction of large-scale public infrastructure and expertise in the use of Tunnel…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Wayss & Freytag Ingenieurbau AGwf-ib.de HQ: Frankfurt, GermanyReported employees: 1,001-5,000 | Frankfurt, Germany | 1,001-5,000 | Exact match | 504 contacts → |
“Die Wayss & Freytag Ingenieurbau AG ist eines der führenden deutschen Bauunternehmen.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | SAK Construction, LLCsakcon.com HQ: O Fallon, MO, United StatesReported employees: 501-1,000 | O Fallon, MO, United States | 501-1,000 | Exact match | 326 contacts → |
“SAK Construction is one of the largest privately held pipeline rehabilitation and tunneling contractors in the U.S.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Delve Undergrounddelveunderground.com HQ: Seattle, WA, United StatesReported employees: 201-500 | Seattle, WA, United States | 201-500 | Exact match | 311 contacts → |
“Delve Underground is a leader in heavy civil engineering, serving the transportation, water, wastewater, and energy industries.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Halmar Internationalhalmarinternational.com HQ: Nanuet, NY, United StatesReported employees: 201-500 | Nanuet, NY, United States | 201-500 | Exact match | 290 contacts → |
“Halmar International, where for more than 60 years the future of transportation infrastructure is built.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Frontier-Kemper Constructors, INCfrontierkemper.com HQ: Sylmar, CA, United StatesReported employees: 201-500 | Sylmar, CA, United States | 201-500 | Exact match | 273 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | Robbinsrobbinstbm.com HQ: Solon, OH, United StatesReported employees: 501-1,000 | Solon, OH, United States | 501-1,000 | Exact match | 264 contacts → |
“With 70 years of innovation and experience, Robbins is the world’s foremost developer and manufacturer of advanced, underground construction machinery.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: Antioch, CA, United StatesReported employees: 201-500 | Antioch, CA, United States | 201-500 | Exact match | 217 contacts → |
“Drill Tech Drilling & Shoring, Inc.(DTDS) is a full service Engineering Contractor founded in 1994 Specializing in tunneling, shafts, deep foundation, ground improvement, and…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | ARX - Geodatageodata.it HQ: Torino, ItalyReported employees: 201-500 | Torino, Italy | 201-500 | Exact match | 166 contacts → |
“GEODATA is a multi-disciplinary company with an Italian origin and a global footprint, specialized in providing high-quality consultancy services and solutions for the development…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cipa S.P.Acipaspa.it HQ: Roma, ItalyReported employees: 201-500 | Roma, Italy | 201-500 | Exact match | 134 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 | Brierley Associates Corporationbrierleyassociates.com HQ: Englewood, CO, United StatesReported employees: 51-200 | Englewood, CO, United States | 51-200 | Exact match | 82 contacts → |
“Creating Space Underground®” has been our mission and our passion for 25 years.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | JW Fowlerjwfowler.com HQ: Dallas, OR, United StatesReported employees: 201-500 | Dallas, OR, United States | 201-500 | Exact match | 81 contacts → |
“J.W.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Rocksoil S.P.Arocksoil.com HQ: 20122 Milano, ItalyReported employees: 51-200 | 20122 Milano, Italy | 51-200 | Exact match | 79 contacts → |
“Rocksoil is design, consulting and technical assistance.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | JAY DEE Contractors INCjaydee.us HQ: Livonia, MI, United StatesReported employees: 201-500 | Livonia, MI, United States | 201-500 | Exact match | 77 contacts → |
“Jay Dee Contractors (Jay Dee) is a family-owned company and a leader in heavy underground construction serving clients across the United States and Canada since 1965.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Corby Energy Services INCcorbyenergy.com HQ: Belleville, MI, United StatesReported employees: 201-500 | Belleville, MI, United States | 201-500 | Exact match | 70 contacts → |
“Established in 1982, CES has installed thousands of miles of underground fiber optic, conventional power and communication cable.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Cogeis SPAcogeis.it HQ: Quincinetto, ItalyReported employees: 201-500 | Quincinetto, Italy | 201-500 | Exact match | 62 contacts → |
“COGEIS SPA is a medium-size Italian construction company founded in 1963 in Quincinetto (Turin), in the Northwest of Italy.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ric-Man Construction, INCric-man.com HQ: Sterling Heights, MI, United StatesReported employees: 51-200 | Sterling Heights, MI, United States | 51-200 | Exact match | 55 contacts → |
“With over 60 years of pioneering excellence in underground construction, Ric-Man has established itself as a leader in the industry, renowned for our innovative approaches and…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | LJB Underground Services Aldea Services INCaldeaservices.com HQ: Frederick, MD, United StatesReported employees: 201-500 | Frederick, MD, United States | 201-500 | Exact match | 53 contacts → |
“LJB Underground Services (Aldea) provides expert technical resources for design and construction management, of heavy civil underground projects and risk management of all major…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Gall Zeidler Consultantsgzconsultants.com HQ: Ashburn, VA, United StatesReported employees: 51-200 | Ashburn, VA, United States | 51-200 | Exact match | 50 contacts → |
“This year marks 25 years of engineering excellence at Gall Zeidler Consultants (GZ)-a global leader in tunnel design, engineering, geotechnics, tunnel rehabilitation, and program…” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Bradshaw Construction Corporationbradshawcc.com HQ: Eldersburg, MD, United StatesReported employees: 51-200 | Eldersburg, MD, United States | 51-200 | Exact match | 45 contacts → |
“Bradshaw Construction Corporation is a leading contractor in the tunneling industry.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Baresel Tunnelbau Gmbhbaresel.de HQ: Leinfelden-echterdingen, GermanyReported employees: 201-500 | Leinfelden-echterdingen, Germany | 201-500 | Exact match | 42 contacts → |
“Baresel Tunnelbau GmbH Die Baresel Tunnelbau GmbH ist einer der führenden Anbieter im Tunnelbau für die Region D/A/CH.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Aaron Enterprises, INCaaronenterprises.com HQ: York, PA, United StatesReported employees: 51-200 | York, PA, United States | 51-200 | Exact match | 42 contacts → |
“Established in 1976, we at Aaron Enterprises, Inc.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Kilduff Underground Engineering, INCkilduffunderground.com HQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 40 contacts → |
“Kilduff Underground Engineering (KUE) was established in 2014 by Todd Kilduff, PE, to support contractors, A/E firms and owners.” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Specialist Engineering Services Limitedses-holdings.com HQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 38 contacts → |
“civil engineering company undertaking works in; Rail Mining Tunnelling Project management consultancy design” Recorded description excerpt · September 18, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 121 company matches
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Subway tunnel contractors: dataset insights
September 18, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
121 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 18, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Subway tunnel contractors by location
3 lists · largest firstEvery Subway tunnel contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for subway tunnel contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many subway tunnel contractors did RevenueBase find worldwide?
The saved snapshot records 121 matching company records, 6,398 tracked contacts and 2,762 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 18, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 subway tunnel contractors worldwide. Snapshot: September 18, 2026. https://revenuebase.ai/companies/browse/subway-tunnel-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗