ULMA Construcción has contributed to the infrastructure improvement in the Basque Country through the construction of the Eskoriatza North-Arrasate North stretch, which is part of the Eibar-Vitoria Highway.
Several projects have been completed within this stretch, such as the Izurieta-Apotzaga tunnel covering 260 meters, which opens out onto the Basagoiti viaduct, of 427 meters, designed to save the existing river bed. Additionally, there are two overpasses that allow overcoming the complex orography.
The Basagoiti viaduct is 427 m long and consists of three V-shaped piers, with 35 m spaced bearings, anchored to a plinth. The cross section is rectangular, 2.25 m high and 5.50 m wide. The axes of the bearings form a quasi-right angle.
