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The bridge design catalogue “Puentes de altura Estricta” (Strict Height Bridges) was one of the greatest creations of the brilliant spanish civil engineer Carlos Fernandez Casado. It was designed at the early 1930’s. It had a great relevance in the Spanish Civil Engineering of the 20th century. Nevertheless, its origins are little known. The first materializations of the “Collection” were six bridges that were constructed in the Jaen province, between 1933 and 1935. They were possible thanks to the determined support of other civil engineer, Jose Acuna y Gomez de la Torre. Later also he carried out the work himself. With this research its process of design and construction is reconstructed. Also bridges are described as they have come to the present day. With all this it is expected its great value as heritage elements be recognized.

Carlos Fernández Casado y José Acuña: los primeros puentes de altura estricta. Jaén, 1933-1935