Vizcaya Bridge straddles the mouth of the Ibaizabal estuary, west of Bilbao. It was designed by the Basque architect Alberto de Palacio and completed in 1893. The 45-m-high bridge with its span of 160 m, merges 19th-century ironworking traditions with the then new lightweight technology of twisted steel ropes. It was the first bridge in the world to carry people and traffic on a high suspended gondola and was used as a model for many similar bridges in Europe, Africa and the America only a few of which survive. With its innovative use of lightweight twisted steel cables, it is regarded as one of the outstanding architectural iron constructions of the Industrial Revolution.
Criteria for inclusion as a World Heritage Site
About the source: UNESCO
Within UNESCO's broad remit, this specialised agency of the UN works towards international cooperation agreements to secure the world's cultural and natural heritage, designating venues of exceptional value as World Heritage Sites.