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Integrated into the AP-1 Motorway in Hernani (Gipuzkoa), this viaduct is an important road infrastructure designed to overcome the region's challenging topography. Its construction improved mobility and strengthened the connection between different areas of the Basque Country through engineering solutions adapted to the terrain.

• Year of execution: 2008
• Location: Guipúscoa, Spain
• Technical Solutions: Form Traveler
• Total extension: 218,00 m

The viaduct was constructed using the balanced cantilever form traveler method, this method enables the structure to be built progressively from the piers, significantly reducing the need for ground-based falsework and minimizing interference with the valley below.