Specialized civil works

Implementation of strategic infrastructure projects

Duplication of the BR-101 road (Brazil)
Link road of the new A-67 in the province of Palencia (Spain)
Ecuandureo - La Piedad road (Mexico)
Santa Cilia-Puente la Reina de Jaca section of the A-21 Motorway, Huesca (Spain)
Construction of the Rusné road (Lithuania)
Extension of the Libramiento Sur motorway in Guadalajara (Mexico)
Fuentes de Oñoro - Salamanca section of the A-62 motorway (Spain)
Autopista Vía Báltica (Lituania)
Coverage of Ronda de Dalt in Barcelona (Spain)
Olesa-Viladecavalls section of the B-40 motorway (Spain)
Duplicación del tramo de la Autovía del Ebro (A-68) entre El Burgo de Ebro y Fuentes de Ebro (España)


Construction, maintenance and renovation of roads, with experience in emblematic projects. Since 1997, COMSA Corporación has built nearly 600 km of roads.


Through Nortúnel, COMSA Corporación has participated in the main projects carried out in Spain, both in the implementation of high-speed railways and in the modernisation of roads and underground urban transport systems.

Lugaritz - Miraconcha section of the Topo railway bypass in San Sebastian (Spain)
A Canda tunnel on the Madrid-Galicia high-speed line (Spain)
Excavation and buttressing of the Amagá tunnels (Colombia)
Larraskitu Tunnels in Bilbao (Spain)
Atlantic Axis railway tunnel on the Lalín-Silleda de Galicia section (Spain)
Structural reinforcement and widening works of the El Callejo and El Arroyo tunnels on the Ferrol-Bilbao narrow gauge line in Bizkaia (Spain)
Tunnels in the Eibar bypass (Spain)
Les Fosses Tunnel in the widening of the Eix Transversal, C-25 road (Spain)
Vielha Tunnel in Lleida (Spain)
Line 3 of the Bilbao Metro (Spain)
Bridge over the Araguaia river (Brazil)
Mobile bridge in Ekerö (Sweden)
Bridge over the Neris river on the A1 road (Lithuania)
Construction of the Autovía del Reguerón dual carriageway in Murcia (Spain)
Bridge on the Régis Bittencourt motorway in the Serra do Cafezal (Brazil)
Assembly of the Algar bridge on the L9 of the Tram Alicante (Spain)
Panemune Bridge over the Nemunas River in Kaunas (Lithuania)
Bac de Roda Bridge in Barcelona (Spain)
Bridge over the river Segre in Lleida (Spain)
Calatayud-Lleida high-speed section of the line between Madrid and the French border (Spain)
Bridge over the Júcar River from Dos Aguas to Millares, in Valencia (Spain)


COMSA Corporación has extensive experience in highly-complex construction procedures. Since 1997, it has built nearly 50 km of bridges and viaducts for roads and rails in Spain.

Hydraulic works

Hydraulic works projects that always prioritise innovation, respect for the environment and quality.

Wastewater treatment plant and sewage collectors in Riba-Roja d'Ebre (Spain)
Extension and renovation of the drainage and supply network in Metković (Croatia).
Torre-Serona treatment plant, Lleida (Spain)
WWTP in Tissemsilt (Argelia)
Commissioning of the WWTP in Ain Kihel (Algeria)
WWTP of Benavente (Spain)
WWTP in Martorell (Spain)
WWTP in Mecheria (Algeria)
WWTP in Saida (Algeria)
Desalting plant in Djaama (Algeria)
DWTP in Llosa del Cavall, Lleida (Spain)
Irrigation transformation of sector XVII of Payuelos, León (Spain)
Renovation of the drinking water tank of Can Llong in Sabadell (Spain)
Construction of the Balearic Quay in the port of Tarragona (Spain)
Berth in the Port of Sao José do Norte (Brazil)
Andalusia Quay in the Port of Tarragona (Spain)
Construction of the container terminal in the Port of Barcelona (Spain)
Expansion of the north and south breakwaters of the Port of Pavilosta (Lithuania)


Development of maritime projects. Specialists in integral actions for the execution, rehabilitation and maintenance of port works.


Specialisation in the development of airport projects with integral construction, rehabilitation and maintenance actions.

Aircraft platform at Girona-Costa Brava Airport (Spain)
Construction of the aircraft parking apron at terminal T4 of Madrid-Barajas Adolfo Suárez Airport (Spain)
Pamplona Airport (Spain)
Completion of the Belém integrated transport system, known as BRT Metropolitano (Brazil)
New intermodal station in Vigo (Spain)
Urbanization of the Santa Pola sea crossing, Alicante (Spain)
Urbanization of the tramway environment in Toulousse (France)
Urbanization of the Reyes Magos Square in Alicante (Spain)
Development of the Santa Marta and Castro de Abaixo industrial estates in Santiago de Compostela (Spain)
Conditioning of Avenida Europa in the municipality of San Bartolomé de Tirajana in Las Palmas de Gran Canaria (Spain)
Urbanización del área de Poble Nou, en Barcelona (España)
Urbanization of CIM La Selva, in Girona (Spain)
Urbanization of land in Montgat (Spain)
Construction of the San Lorenzo Sports Technification Center, Las Palmas de Gran Canaria (Spain)

Urban development

Urbanization of areas such as promenades, pedestrian and bicycle paths or industrial parks.