Viaduct over the Narcea river, a record in Asturias.
The Viaduct over the Narcea River, on the new section of the A63 motorway between Doriga and Cornellana, Asturias, is a unique structure 875 meters long and 75 meters high above the valley floor. The viaduct has six piles and seven bays, the most important of which has a span of...