High-speed line Atocha-Chamartín Tunnel

High-speed line Atocha-Chamartín Tunnel

The works consist of the execution of the platform and a railway tunnel to connect the Atocha and Chamartín stations, both of which are in Madrid and for exclusive High-Speed AVE train transit.

The tunnel allows the coordination of the railway connection with destination or origin in the southern and eastern half of Spain with the lines in the north.

This section of the new route was constructed with double international width track and is 7.3 kilometres long, of which 6.9 kilometres are underground, which facilitates its urban integration as it crosses densely urbanised areas. It passes over Madrid Metro Line 9, under another eight Metro lines and under the Iberian width Atocha-Recoletos-Chamartín and Atocha-Sol-Chamartín tunnels that are used by local service and long-distance trains, at an average depth of 45 metres.

Most of the tunnel was excavated with a TBM, except one 110-metre section near Chamartín Station, which was executed on the surface. The tunnel was lined with 1.8 x 0.36 voussoirs that were assembled by the TBM and it also has eight emergency exits.

It also includes the remodelling of the marshalling yard at the south head of Chamartín Station in order to enable the arrival of the high-speed here through the tunnel that will connect with the future expansion of Puerta de Atocha Station.

This railway connection between Atocha and Chamartín stations forms an essential infrastructure for the development of a vertebral network of international width in Spain.


Remarkable aspects

  • A tunnel that allows the coordination of the railway connection between the southern and eastern half of Spain and the north.
  • It increases safety, with the adoption of cutting-edge technologies in automatic train driving systems.
  • 6.9 kilometres run underground, which facilitates its urban integration.

Cost: 206.0 M€

Client: ADIF. Ministry of Development

Start date: January 2009

End date: December 2011