This paper presents part of the results in two research projects about the architecture of the Roman Lusitania. The bridge of Alcantara (Cáceres) has been object of an exhaustive study, which includes new graphic documentation and the analysis of historical and structural transformations of the monument. Different evidences support the hypothesis of an existing architectural project for an earlier bridge, which probably was never finished. Two external arches and a vault of a structure underneath the Trajan bridge indicates the existence of a very different construction to the monument that can be seen nowadays. That first bridge, crucial for the economic exploitation of the surrounding areas since the early Roman period, might not have been an architectonical type suitable for the topography of the river Tajo area.
Pizzo, A. (2016). El puente romano de Alcántara: nueva documentación arqueológica y evidencias constructivas previas. Arqueologia de La Arquitectura, (13). https://doi.org/10.3989/arq.arqt.2016.023