Design and construction

This project, worth €41 million, involved the design and construction of a 3.1-km long tunnel of 3.5 m in diameter, to accommodate 1.2-m and 2-m diameter water pipelines.

Other services include electrical cables, fibre-optic communication services and transformer stations.


  • Location: Madrid, Spain.
  • Contract type: Design and construction.
  • Infrastructure: 3.1-km long tunnel with a diameter of 3.5 m to accommodate water pipelines with diameters of 1.2 m and 2 m.
  • Year of project completion: 2008

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