• Description: Construction of the Otero tunnel at 990m and a 155m2 section, with two emergency exits and a gallery of prefabricated cement arches of 158m. This tunnel belongs to the Madrid-Galicia high-speed rail line (Zamora-Lubián section).
  • Location: Zamora, Spain
  • Client: SEITT (State Company For Land Transport Infrastructures)
  • Cost: 125.707.734,53 €
  • Term for completion: 17 months
  • Fecha fin de obra: August 2017