Skip to main content

Leading the way to greener and smarter mobility, worldwide.

Our ambition is to accompany all transportation stakeholders in meeting tomorrow’s mobility challenges. We strive to provide them with the most efficient and digital mobility systems, while further improving the environmental friendliness of our solutions. 

Smart innovation for sustainable mobility

Follow us on

A comprehensive portfolio of mobility solutions

We offer a complete range of equipment and services, from high-speed trains, metros, trams and e-buses to integrated systems, customised services, infrastructure, signalling and digital mobility solutions.

Discover our solutions

Follow us on


Find the latest Alstom press releases and news, press kits, your regional press contacts and more!

Enter the newsroom

Follow us on

The one stop shop for all relevant information for investors and shareholders

Access our financial & share information, our financial calendar and results, regulated information, shareholders' meetings and investors' contacts & presentations.

See more

Follow us on

Join us

At Alstom, we value curious and innovative people who are passionate about working together to reinvent mobility, making it smarter and more sustainable.

Learn more

Follow us on

Alstom, Indra and Constructora San Jose to supply tunnel safety and security systems for Spain’s new Madrid-Asturias high-speed line

Download as PDF
Press contacts - Corporate

Samuel Miller

Send an email

Tel: + 33 1 57 06 67 74

Coralie Collet

Send an email

Tel: +33 (1) 57 06 18 81

Press contact - Spain

Irma Aguado

Send an email

Tel: +34 91 334 56 81

Alstom, in consortium with Indra and Constructora San Jose[1], has signed a €53 million contract[2]with Spanish railway infrastructure authority Adif to supply and install the safety and security systems for twelve tunnels in the Pajares Bypass high speed connection.

The 49-kilometre Pajares Bypass, which joins the municipalities of La Robla (León) and Pola de Lena (Asturias), is part of the future León - Asturias High Speed Line (LAV), which will substantially improve the railway connection between Madrid and the North of Spain. The project includes, includes a 25-kilometre bi-directional tunnel, the second longest tunnel in Spain, and will allow trains to cross the Cantabrian Mountains at high speed.

The consortium will supply the safety and security systems for the tunnels, including ventilation and firefighting systems, fire doors, emergency radio and gas detection. Alstom will also provide the power supply for the entire system and will integrate it into the customer’s remote-control Supervisory Control and Data Acquisition system (SCADA). Assistance and emergency responses are also part of the package.

Alstom and Indra teams have long experience in similar projects on the Spanish rail network. Specifically, the companies have already equipped and maintained electromechanical installations in 32 tunnels associated with the Ourense-Santiago line, and 4 tunnels on the Madrid-Valladolid high-speed line, including the Guadarrama tunnel – the longest in Spain.  Alstom and Indra have also jointly installed security systems in the tunnels of the high-speed line between Antequera and Granada.

Constructora San Jose has executed various sections of the main high-speed lines in Spain (Madrid - Zaragoza - Barcelona - French Border, Madrid - Valencia, Madrid -Galicia, Madrid - Asturias, etc.), highlighting the Contreras - Villargordo del Cabriel one of the most  challenged in Spain (85% of the route is made up of 3 tunnels and 3 viaducts, among them the Contreras one with the largest concrete railway arch in Europe).

Pajares bypass

Pajares Bypass will allow passenger and freight trains to cross the Cantabrian Mountains at high speed. The installation of the security systems will contribute to easier, faster and more reliable connections between Madrid and the north of Spain.  It will reduce the travel time on the Madrid-Valladolid-León-Oviedo / Gijón route and will ease the railway connection with the Asturian ports. With a double track section, it will also increase network capacity and ride comfort.

[1] The consortium is composed of Indra (35%), Alstom (35%) and Constructora San Jose (30%).

[2] Vat excluded (64,3 million Euro, including taxes)