Company lists · Data refreshed September 2026

Top 25 Transit infrastructure contractors based in Spain

Name: Transit infrastructure contractors based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 73 companies tracked

RevenueBase identified 73 transit infrastructure contractors headquartered in Spain as of September 2026 and tracks 11,393 professional contacts across them, including 981 with verified work emails. Madrid is the largest hub.

This list covers transit infrastructure contractors headquartered in Spain, 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 19, 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 19, 2026 86% judged on-target in blind review

73Companies

11,393Contacts tracked

981Verified emails

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The 25 largest transit infrastructure contractors based in Spain

Ranked by team size

Top 25 of 73 transit infrastructure contractors based in Spain, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transit infrastructure contractors: 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	Dragados SA	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	10001+	2,554 contacts →
	Indirect evidence “DRAGADOS, S.A.” Source: RevenueBase Database · checked Sep 19, 2026
2	Isolux Corsan	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	5,001-10,000	1,649 contacts →
	Partial evidence “Isolux is a global benchmark in energy, water and environmental, road and railways infrastructure with presence in more than 35 countries on four continents.” Source: RevenueBase Database · checked Sep 19, 2026
3	Comsa Corporación	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	5,001-10,000	1,315 contacts →
	Partial evidence “COMSA Corporación is the largest unlisted Spanish group in the infrastructure and engineering sector.” Source: RevenueBase Database · checked Sep 19, 2026
4	Grupo Lantania	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	1,001-5,000	475 contacts →
	Partial evidence “En Lantania hacemos realidad grandes infraestructuras de transporte, agua y energía con el entusiasmo de una empresa joven y la solidez que nos aporta la experiencia.” Source: RevenueBase Database · checked Sep 19, 2026
5	Prointec	Indirect evidence	San Fernando De Henares, SpainHQ checked Sep 19, 2026	501-1,000	458 contacts →
	Indirect evidence “Somos un referente internacional en ingeniería, arquitectura y consultoría de infraestructuras, urbanismo y medio ambiente.” Source: RevenueBase Database · checked Sep 19, 2026
6	Pavasal S.A	Indirect evidence	Valencia, SpainHQ checked Sep 19, 2026	501-1,000	418 contacts →
	Indirect evidence “PAVASAL es una empresa constructora dedicada a la conservación y construcción de obra civil.” Source: RevenueBase Database · checked Sep 19, 2026
7	Rover Grupo	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	501-1,000	411 contacts →
	Indirect evidence “Bienvenido a Rover Grupo!” Source: RevenueBase Database · checked Sep 19, 2026
8	Cintra, A Ferrovial Company	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	1,001-5,000	343 contacts →
	Indirect evidence “Efficient and innovative solutions to meet global mobility needs.” Source: RevenueBase Database · checked Sep 19, 2026
9	Systra Ardanuy Ingeniería S.A.U	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	201-500	300 contacts →
	Indirect evidence “SYSTRA Ardanuy, founded in 1992, is an international engineering consulting firm specialising in studies, project design, construction management, safety engineering (ISA), and…” Source: RevenueBase Database · checked Sep 19, 2026
10	CHM Infraestructuras	Indirect evidence	Alicante, SpainHQ checked Sep 19, 2026	201-500	293 contacts →
	Indirect evidence “At CHM Obras e Infraestructuras our track record in the sector makes us a benchmark company.” Source: RevenueBase Database · checked Sep 19, 2026
11	Adelte Group	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	501-1,000	248 contacts →
	Indirect evidence “ADELTE Group is an engineering organization with more than five decades of experience in the design, manufacture, supply and maintenance of innovative solutions and results-driven…” Source: RevenueBase Database · checked Sep 19, 2026
12	Espina Obras Hidraulicas S.A	Indirect evidence	Santiago De Compostela, SpainHQ checked Sep 19, 2026	201-500	209 contacts →
	Indirect evidence “ESPINA is a constantly growing company that has been expanding its areas of activity and services in Spain since 1989 and in Uruguay and the Ivory Coast since 1995.” Source: RevenueBase Database · checked Sep 19, 2026
13	Syneox Rail	Partial evidence	Alcobendas, SpainHQ checked Sep 19, 2026	501-1,000	155 contacts →
	Partial evidence “Railway Energy Systems International Contractor” Source: RevenueBase Database · checked Sep 19, 2026
14	Ingerop T3	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	1,001-5,000	122 contacts →
	Partial evidence “We are the Spanish subsidiary of Ingérop, a leading company in France and internationally in engineering and consulting in sustainable mobility, energy transition and environment.” Source: RevenueBase Database · checked Sep 19, 2026
15	Infraestructures DE LA Generalitat DE Catalunya SAU	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	201-500	119 contacts →
	Indirect evidence “Infraestructures.cat és una empresa pública adscrita al Departament de Territori i mitjà propi de l’Administració de la Generalitat de Catalunya i el seu sector públic.” Source: RevenueBase Database · checked Sep 19, 2026
16	Levantina, Ingeniería Y Construcción	Indirect evidence	Alberic, SpainHQ checked Sep 19, 2026	201-500	96 contacts →
	Indirect evidence “Nuestra empresa LIC, nace en Alberic (Valencia) en el año Su origen es la empresa Soluciones Estructurales SL, con una larga trayectoria en la ejecución de grandes estructuras de…” Source: RevenueBase Database · checked Sep 19, 2026
17	Imathia Construcción SL	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	85 contacts →
	Indirect evidence “The Company started activities in the civil works sector in 2004, being IMATHIA Construcción main objective to provide Spanish and international clients with a professional and…” Source: RevenueBase Database · checked Sep 19, 2026
18	Viuda DE Sainz	Indirect evidence	Abanto Ziebena, SpainHQ checked Sep 19, 2026	201-500	69 contacts →
	Indirect evidence “El compromiso con las personas y la responsabilidad corporativa están en el centro de nuestros valores empresariales.” Source: RevenueBase Database · checked Sep 19, 2026
19	Asfaltos Y Construcciones Elsan, S.A	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
20	Metrotenerife Metropolitano DE Tenerife, S.A	Indirect evidence	La Laguna, SpainHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence “Constituida el 22 de enero de 2001, la empresa Metropolitano de Tenerife (Metrotenerife) es una Sociedad Anónima participada 100% por el Cabildo Insular de Tenerife.” Source: RevenueBase Database · checked Sep 19, 2026
21	Troya Construcciones Ferroviarias	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	30 contacts →
	Partial evidence “TROYA constructora especializada en obra civil y mantenimiento de infraestructura de transportes (principalmente ferroviarias), así como de nuevos proyectos de diseño y adecuación…” Source: RevenueBase Database · checked Sep 19, 2026
22	BEWS	Strong evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	29 contacts →
	Strong evidence “BEWS provides sustainable and innovative solutions in the area of Infrastructures and Transportation.” Source: RevenueBase Database · checked Sep 19, 2026
23	Infraestructuras Trade	Indirect evidence	Sant Felíu De Llobregat, SpainHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “Nos especializamos en los trabajos que requieren un valor añadido: COMPROMISO, PRECISIÓN y TECNOLOGÍA La experiencia consolidada en el sector de infraestructuras ferroviarias…” Source: RevenueBase Database · checked Sep 19, 2026
24	Gonzalez Soto SA	Indirect evidence	La Union, SpainHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “La actividad de la empresa GONZALEZ SOTO, S.A.” Source: RevenueBase Database · checked Sep 19, 2026
25	Spiral	Strong evidence	Camargo, SpainHQ checked Sep 19, 2026	11-50	21 contacts →
	Strong evidence “Spiral is a transportation design company grounded on more than 30 years of experience in international infrastructure projects.” Source: RevenueBase Database · checked Sep 19, 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: transit infrastructure 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 transit infrastructure contractors.
Partial evidence: Its own public description names part of transit infrastructure contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transit infrastructure 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 73 transit infrastructure contractors based in Spain

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Transit infrastructure contractors based in Spain at a glance

As of Sep 19, 2026

8.6%Verified-email coverage

156.1Average contacts per company

51-200Median size (employees)

24.7%Largest-city concentration · Madrid

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 73 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 transit infrastructure 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.
What qualifies: Companies headquartered in Spain whose own description of what they do matches “transit infrastructure 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 transit infrastructure 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 transit infrastructure contractors, and records with no verified work email. Companies headquartered outside Spain 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, 981 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 19, 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 transit infrastructure 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 transit infrastructure contractors are there based in Spain?

RevenueBase identified 73 transit infrastructure contractors headquartered in Spain 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?

Dragados SA, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most transit infrastructure contractors?

Madrid leads with 18 headquartered companies, followed by Barcelona (7) and Valencia (3).

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 981 verified decision-maker contacts tracked across these 73 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 19, 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.