• Transport infrastructures

Sants-Sagrera: the longest urban tunnel in Europe

We are executing the most complex underground section of the High Speed Railway (LAV) that links Madrid to the French border
Sants-Sagrera Tunnel

Sants-Sagrera Tunnel

The tunnel that runs between the railway stations of Sants and La Sagrera in Barcelona is one of our proudest achievements. The tunnel is 5.6 km long and runs underneath the neighborhood of Eixample.

In order to protect the historic buildings of La Pedrera, the Sagrada Familia church, and the Torre del Fang, we had to implement major safety measures such as ground consolidation and reinforced concrete screens. In fact, this project is a leading example in terms of the building techniques and protection measures utilized.

To carry out these works, a 11.5 meter diameter tunnel was excavated by means of EPB using Barcino tunneling equipment. We also built a tunnel between two 400 meter screens at the start and another 410 meter screen at the end of the section. .



Total length



Total construction budget



Diameter excavated using the Barcino tunneling equipment

  • Sacyr Infrastructures
  • Railway infrastructures
  • Spain

We use our own and third party cookies for analytical purposes. Click on HERE for more information. You can accept all cookies by clicking the "Accept" button or set them up or refuse their use by clicking.

Cookie declaration

These cookies are necessary for the website to function and cannot be disabled in our systems. These cookies do not store any personally identifiable information.

Name Provider Purpose Expiration Type
LFR_Sesión_STATE_* Liferay Manage your session as a registered user Session HTTP
GUEST_LANGUAGE_ID Liferay Determines the language with which it accesses, to show the same in the next session 1 year HTTP
ANONYMOUS_USER_ID Liferay Manage your session as an unregistered user 1 year HTTP
COOKIE_SUPPORT Liferay Identifies that the use of cookies is necessary for the operation of the portal 1 year HTTP
JSesiónID Liferay Manages login and indicates you are using the site Session HTTP
SACYRGDPR Sacyr Used to manage the cookie policy Session HTTP

These cookies allow us to count visits and sources of circulation in order to measure and improve the performance of our site. They help us know which pages are the most or least popular, and see how many people visit the site. All information collected by these cookies is aggregated and therefore anonymous.

Name Provider Purpose Expiration Type
_gat Google It is used to throttle the request rate - limiting the collection of data on high traffic sites Session HTTP
_gid Google It is used to store and update a unique value for each page visited Session HTTP
_ga Google This is used for statistical and analytical purposes for increasing performance of our Services Session HTTP