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Construction Engineering

ADIF awards Inse Rail the supervision of the works to renovate the safety installations of the Peñalajo-Espeluy section, line 400

15 October, 2025

The contract, which was awarded to Inse Rail in a joint venture with two other companies, covers a stretch of 94 kilometers that falls entirely within the provinces of Ciudad Real and Jaén. It is part of Line 400 (Alcázar de San Juan – Cádiz) of the General Interest Railway Network (RFIG). This section includes several stations and stops that handle medium and long distance trains of Renfe Operadora, as well as freight traffic.

Over the next few years, a variety of actions that are currently in the project or planning phase will be carried out, including the extension of sidings with to 750 meters at different points. Much of the route will be also be integrated into the future Algeciras-Zaragoza rolling highway, which increase traffic significantly and will require infrastructure with greater capacity and improved reliability.

The section currently has 36 interlockings that use various technologies. Many of these – especially those with free cabling and geographical groups – use obsolete technology that is incompatible with future track modifications that will be required for the planned expansion projects.

The renovation includes the installation of new state-of-the-art signaling equipment, along with the implementation of centralized control and command systems. All of the field equipment will be replaced, incorporating signals with LED lights, axle counters in stations, audio-frequency track circuits on the routes and an ASFA Digital protection system. All the existing switches in the stations will be replaced with electromechanical drives, including the turnouts that give access to the main tracks that are currently non-motorized.

The cab equipment will also be updated with the installation of state-of-the-art electronic interlocks (ENCE) in all stations. These systems will be located in new technical buildings, designed to house the signaling and communications rooms, which will allow a safer, more efficient operation prepared for the future growth of rail traffic.

Source: Inse Rail


https://inserail.es/wp-content/uploads/2025/10/IISS_penalajo_espeluy_inserail_.png 345 710 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2025-10-15 21:08:182025-11-03 21:13:46ADIF awards Inse Rail the supervision of the works to renovate the safety installations of the Peñalajo-Espeluy section, line 400
Construction Engineering

ADIF awards Inse Rail the contract for the supervision of the works to renovate the infrastructure and track between the Redondela and Vigo stations

20 September, 2025

The project awarded by ADIF to Inse Rail, as part of a joint venture, will eliminate 12 grade crossings, increase the permeability of the infrastructure and minimize the possibility of flooding in the municipality, according to the informational study approved by the Ministry of Transport and Sustainable Mobility.

After a preliminary analysis of construction solutions, the project will develop a railway bypass that will connect the Bilbao-Balmaseda and Santander-Bilbao lines, freeing up more than a kilometer of track through the city center and eliminating grade crossings. In addition, the existing stop in Aranguren will be replaced with a new one.

The project will also include actions on two railway bridges that cross the Cadagua River, near the Aranguren stop. One of these will be dismantled, and the span (space between piers) will be extended to increase its water capacity, integrating the improvements to the waterway planned by the Basque Water Agency (URA).

These operations will be carried out in coordination with the URA, which also carries out flood protection actions in the area, specifically from the shallows located near the Aranguren station track yard to the commercial area of the Baular neighborhood. 

The drafting of this project, as well as the later execution of the works by Adif, is part of the protocol signed by the Ministry of Transport, Adif, the Basque Water Agency and the Zalla City Council.

Source: Inse Rail


https://inserail.es/wp-content/uploads/2025/09/U3B5QLMJTRGXTKGGMQFXLWV4KI.png.jpeg 586 1200 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2025-09-20 09:03:462025-10-07 09:07:55ADIF awards Inse Rail the contract for the supervision of the works to renovate the infrastructure and track between the Redondela and Vigo stations
Construction Engineering

Inse Rail to supervise the works to extend siding tracks to 750 meters in three stations in Córdoba

30 July, 2025

ADIF has awarded INSE RAIL, in a joint venture, the contract for the supervision of the works of the projects to increase the length of the siding tracks in the Fernán Núñez, Montilla and Puente Genil stations to 750 m. These stations are part of the conventional gauge L/430 Córdoba Mercancías – Los Prados line, which connects the provinces of Córdoba and Malaga.

INSE RAIL also drafted the project for the three stations.

These actions are aimed at achieving the conformity of the stations and to allow the parking and crossing of trains up to 750 meters long. The extension of these siding tracks will improve the capacity, efficiency and competitiveness of the line, helping reduce external and internal costs of freight transport.

The works consist of the extension of the platform, the refurbishment of the old platform in the platform area and the installation of the track on the extended route. The extended tracks will also be electrified and the catenary in the stations will be adapted to equip them with rigid frames. The drainage system will also be adapted to the new track configuration.

In addition, the existing overpass in the Montilla station will be replaced with a longer one.

Source: Inse Rail


https://inserail.es/wp-content/uploads/2025/07/Redondela_inserail.jpg 562 1240 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2025-07-30 20:23:052025-08-24 19:32:09Inse Rail to supervise the works to extend siding tracks to 750 meters in three stations in Córdoba
Construction Engineering

ADIF awards Inse Rail the contract for the supervision of the works to renovate the infrastructure and track between the Redondela and Vigo stations

30 July, 2025

Inse Rail, in a joint venture with the company Ofiteco, has been awarded the contract to supervise the works of the construction project for the comprehensive overhaul of infrastructure and track in the section connecting the Redondela and Vigo-Guixar stations, in the province of Pontevedra, on the Monforte de Lemos – Chapela Split line.

This action is aimed at upgrading and optimizing one of the region’s most important railway lines, which will improve the capacity, efficiency and reliability of the route to the benefit of both passengers and freight transport.

The action includes renovation of the track on the route by installing sleepers, ballast and new and improved turnouts, and adapting it for the future upgrading of the line’s electrification.

In the Chapela neighborhood, a new stop with a 220 m platform will be built close to a parking lot, with a pedestrian walkway over the tracks. This will improve the mobility conditions for citizens and better integrate the railway into the surrounding area.

A new central platform longer than the existing platform will be built in the Redondela station, and the rest of the platforms will be expanded. All of the platforms will be connected with a new underpass. 

At the Vigo-Guixar station, Adif will install new and improved turnouts and will extend the platform at the head of the tracks to allow arrivals and departures of trains longer than 600 m. 

The project also includes actions in the Vigo tunnel – from the reinforcement of the waterproofing, tunnel lining and drainage, to the adaptation of the tunnel gauge for new electrification in the future – and with improvements to embankments, cuts, drainage and other elements of the line.

This action is another advance in Adif’s plan, with an investment of 265 million euros, to upgrade the entire Ourense-Vigo Guixar line, or ‘Miño Line’, which includes the Guillarei-Portuguese border connection. This will adapt the line to the parameters of the Atlantic Corridor, strengthen the connection with Portugal, and increase the capacity for both passenger and freight traffic.

Source: Inse Rail


https://inserail.es/wp-content/uploads/2025/07/Puente_Genil_750_inserail.jpg 393 698 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2025-07-30 19:27:182025-08-24 19:31:37ADIF awards Inse Rail the contract for the supervision of the works to renovate the infrastructure and track between the Redondela and Vigo stations
Construction Engineering

Inse Rail to supervise the works to adapt the Madrid-Zaragoza stretch to the Rolling Highway

20 January, 2025

Inse Rail, as part of a joint venture, has been awarded the contract to supervise the works to adapt the Madrid-Zaragoza stretch to the Rolling Highway (RH) of the Algeciras-Zaragoza route.

The RH is a cargo transport service that loads highway trailers or semi-trailers, using specialized cars. The initiative offers a competitive and collaborative logistics solution that significantly reduces both external costs and GHG emissions. Highway transport emits 4.7 times more GHGs than rail (annual savings: 620,000 tn CO2).

The work consists of adapting the railway loading gauge of tunnels and overpasses to the dimensions required for the semi-trailers that will use the RH service between Madrid and Zaragoza.  This will require the modification of 40 overpasses and 26 tunnels on the conventional-gage line between the provinces of Madrid, Guadalajara, Soria and Zaragoza.

This will involve modification of the infrastructure, such as the expansion of the tunnel cross-sections and lowering of the platform, as well as changes to the superstructure, including renovation of sleepers, rails and ballast, as well as drainage and electrification work. 

The framework of the actions between Madrid and Zaragoza to develop the Rolling Highway also includes extending the siding tracks of the Épila, Morés, Paracuellos-Sabiñán, Arcos de Jalón, Sigüenza, Jadraque, and Humanes de Mohernando stations to a length of 750 m.

This will make it possible to park trains and allow trains of interoperable lengths to cross, increasing the capacity, efficiency and competitivity of the line to promote railway transport of freight.

The implementation of the Algeciras-Zaragoza RH service will be crucial to increase the share of railway transport on the central branch of the Mediterranean Corridor as well as on the Atlantic Corridor. It will also strengthen intermodality on the Iberian Peninsula with traffic between Europe and Morocco.

The Algeciras-Zaragoza route will carry 6 trains per day (three in each direction) with trucks to/from Morocco, in addition to 2 trains per day (one each way) from Huelva to Zaragoza, with trucks to/from the Canary Islands and the area around Huelva; and another 4 trains per day (two each way) Sevilla-Zaragoza, with truck to/from the Port of Sevilla and Andalusia.

This means that each day, approximately 12,000 train-km will be covered, and approximately 360 trucks will be carried on this route, avoiding 360,000 km of highway truck traffic per day.   

The services of the Algeciras-Zaragoza RH will continue from Zaragoza to Tarragona, through Lleida. This stretch connects the Main production and consumption nodes of the Iberian Peninsula, Madrid and Barcelona, and forms part of the flow between the center and south, and northeast Spain and the rest of Europe. 

These actions will help achieve Sustainable Development Goal (SDG) 8, which is aimed at promoting sustained, inclusive and sustainable economic growth; and SDG 9, whose aims include the development of reliable, sustainable, resilient and high quality infrastructure.

 

Source: Inse Rail


https://inserail.es/wp-content/uploads/2025/01/af_algeciras_zaragoza_inserail.png 442 724 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2025-01-20 12:16:512025-02-04 12:18:29Inse Rail to supervise the works to adapt the Madrid-Zaragoza stretch to the Rolling Highway
Construction Engineering

Inse Rail awarded the contract to supervise the modernization works of the catenary of the metric-gage network in Cantabria

22 November, 2024

Adif will invest 14 million euros to modernize the catenary of the metric-gage network in Cantabria. This new action is part of the Plan de Cercanías, which will increase the reliability of the electrification systems, improve the response to potential incidents and facilitate maintenance tasks.

All the disconnect switches in the network’s catenary will be replaced, and they will also be integrated into a remote control system so that the devices can be monitored and controlled automatically. 

The work – which includes all the installation operations, integration of the equipment, supply, installation, configuration and commissioning – will be supervised by Inse Rail. 

Catenary disconnect switches are the devices that make it possible to mechanically separate an electrical circuit from its power supply, isolating it in a section or segment of the line. This makes it safe to work on the electrical network and makes it possible to isolate sections of the catenary in case of malfunctions so that trains can continue to travel over the rest of the network.

This action joins other initiatives related to the network’s electrification that are currently underway, such as the new substations in Santander, Virgen de la Peña (both in the project-design phase) and Requejada (under construction).

 

Source: Inse Rail


https://inserail.es/wp-content/uploads/2024/11/seccionador_RAM_Cantabria_inserail.jpeg 693 924 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2024-11-22 10:08:122024-12-04 10:10:40Inse Rail awarded the contract to supervise the modernization works of the catenary of the metric-gage network in Cantabria
Construction Engineering, Design

Inse Rail to design and supervise the works of Alstom’s new maintenance workshop in Santa Perpetua de Mogoda

5 November, 2024

Alstom will build its first railway maintenance workshop at the factory in Santa Perpètua de Mogoda (Barcelona), which is approaching saturation and needs to be expanded and transformed.

Inse Rail will be responsible for preparing the construction design and later supervision of the works of the second large-scale project since the factory first opened in 1993.

The new maintenance workshop will measure 21 meters wide by 115 meters long and will be arranged on a single level. The plant has 3 corridors created by installing 2 tracks on support pillars. It also includes a building that abuts the facade of the building, divided into two floors, measuring 65.7 m long and 8 m wide, and a one-story wing measuring 10.60 m. The ground floor will be used for the reception area and workshops and the spaces for offices and worker services (changing rooms, restrooms, etc.) will be located on the upper floor.

Inse Rail is a leading company in the design of railway workshops and maintenance bases. Some of its more important projects include the design of ADIF’s first workshop in the Madrid-Sur maintenance sub-base and the design for RENFE’s new Fuencarral II high-speed workshop and the expansions of the Self-propelled workshop and the Santa Catalina II maintenance base. It also provided Project Management for the construction and commissioning of the Medina maintenance workshop on the Haramain high-speed line in Saudi Arabia.

Source: Inse Rail


https://inserail.es/wp-content/uploads/2024/10/taller-Alstom_Sanra-Perpetua-de-Mogada.jpg 296 642 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2024-11-05 17:58:322025-03-25 14:00:21Inse Rail to design and supervise the works of Alstom's new maintenance workshop in Santa Perpetua de Mogoda
Construction Engineering

Inse Rail to supervise the comprehensive remodeling works of the Grisén railway station

31 October, 2024

Adif has awarded Inse Rail the contract to provide technical assistance in the supervision of the works to remodel and modernize the Grisén railway station on the Madrid-Zaragoza conventional-gage line, located in the Ribera Alta del Ebro region (Zaragoza).

The construction project for the remodel was designed by Inse Rail to expand the functionality and operation of the station’s layout to improve traffic performance and improve operating efficiency.

The comprehensive remodeling of the station, which has several siding tracks and an industrial siding for the Opel automobile factory, includes the overhaul of the track yard configuration and layout to increase the travel speed of passenger trains between Madrid and Navarra/Basque Country/La Rioja, and the reorganization of the tracks in the siding to extend the useful length of two of them (3A and 3B) to 750 m.  The platform will also be expanded to respond to the needs of the new track configuration and the structure over the Canal Imperial de Aragón will be prepared.

The work includes the installation of new elements (rails, sleepers and ballast) and trackside devices, the comprehensive modernization of the electrification system, and the relocation of the lighting installations. The platforms will also be raised, a new central platform will be created, the main platform next to the passenger building will be reconstructed, and a new underpass equipped with stairs and ramps will be built under the platforms.

Source: Inse Rail


https://inserail.es/wp-content/uploads/2024/10/240530_np_prtr_adj_remodelacion_estacion_grisen_zaragoza.jpg 863 1150 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2024-10-31 18:33:502024-10-31 18:33:50Inse Rail to supervise the comprehensive remodeling works of the Grisén railway station
Construction Engineering

Metro de Madrid awards Inse Rail supervision of the works to renovate signaling on Line 7A

10 September, 2024

To improve the quality, maintainability and operational safety of Metro de Madrid’s operating network, an Action Plan has been established for the technological renovation of obsolescent signaling systems that contain contaminating substances, replacing them with state-of-the-art electronic interlockings.

As part of this plan, METRO has planned the execution of the comprehensive renovation works of the signaling system on line 7A, between the Estadio Metropolitano and Pitis stations, to provide the line with a high-performance, high-availability Target Distance signaling system that will make it possible to remove obsolescent equipment. The actions affect 20 kilometers of tunnel and 27 stations.

Inse Rail will supervise the execution of the installations works that will be carried out at night without interrupting service, and five periods of service interruption of approximately 92 hours each planned during 2024/2025. This means that the coordination of the works, both during the periods with service and during the planned closings, will be critical for the execution of the work.

Source: Inse Rail


https://inserail.es/wp-content/uploads/2024/09/linea7_renovacion_señalizacion_inserail.jpeg 658 1170 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2024-09-10 13:46:122024-09-12 13:47:39Metro de Madrid awards Inse Rail supervision of the works to renovate signaling on Line 7A
Construction Engineering

Inse Rail, awarded the contract to supervise the works of the Atocha transit station, in consortium with three other engineering firms

3 July, 2024

Adif Alta Velocidad has awarded the engineering consortium made up of Inse Rail, Grusamar, Eptisa and GOC the contract to supervise the works of the future Atocha transit station that will allow trains that leave from Chamartín Station to stop at Madrid’s southern terminal, and will also expand the terminal’s capacity.

The supervision contract has a budget of 17.7 million euros and a completion time of 7.5 years.

This is the final action in the railway manager’s ambitious plan to expand the capacity of the high-speed network, and will turn Madrid “into one large train station with two terminals, Atocha and Chamartín”. It will connect the high-speed tunnel that passes through Madrid from north to south with the route used by trains from Barcelona and Andalusia, enabling them to continue to destinations in the north of the Peninsula.

The transit station will be located underground beneath the existing Puerta de Atocha station and Calle Méndez Álvaro. It will have four new tracks and two platforms, and although the execution involves a “high degree of technical complexity”, train traffic will not have to be cut off. It will have two entrances: one, to the north, from the existing terminal and another to the south, to give access to the Méndez Álvaro area, where an intermode platform for taxis, VTCs and private vehicles will be installed. The northern part of Puerta de Atocha will also be remodeled.

The project will be carried out on several levels: the platforms will be located at an elevation of 600 meters; above that, at 607 meters, there will be two boarding halls to the north and south, as well as the connecting walkways. The southern lobby of Méndez Álvaro will be located on an upper floor, at 611 meters and will include the taxi stand; and at 624 meters it will connect with the first floor of the Puerta de Atocha departure lobby. The underground station will also include a central skylight and a curtain wall.

 

Source: Inse Rail


https://inserail.es/wp-content/uploads/2024/06/estacion_pasante_atocha_inserail.jpg 777 1160 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2024-07-03 18:09:452024-07-03 18:13:46Inse Rail, awarded the contract to supervise the works of the Atocha transit station, in consortium with three other engineering firms
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Recent projects

Diagonal tram extension. (Barcelona)


https://inserail.es/wp-content/uploads/2023/10/tranvia_diagonal1_inserail.jpeg 900 1200 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2023-10-22 12:36:522023-10-22 21:08:05Diagonal tram extension. (Barcelona)

Services to coordinate the Metro de Málaga works for handover to the concessionaire and commissioning supervision


https://inserail.es/wp-content/uploads/2022/04/metro-malaga_inserail.png 420 728 Jaime Cañedo https://inserail.es/wp-content/uploads/2019/08/LOGO_INSERAIL.png Jaime Cañedo2022-10-17 12:11:082022-10-30 11:33:09Services to coordinate the Metro de Málaga works for handover to the concessionaire and commissioning supervision

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