Medieval bridge of Roman origin (Osma)

First century B.C. Popularly known as ``Puente de la Torre del Agua''. Eduardo Saavedra y Moragas (1829-1912), who took this bridge as a starting point to describe the road between Uxama and Augustóbriga, maintains that the construction contains a lot of ashlars, the rigging is deficient and irregular, the slope is in the form of an "ass's back" typical of medieval bridges and that there are ashlars engraved with initials, very typical of the Middle Ages. There is also another very authoritative current of opinion, among them, Carlos Fernández Casado (1905-88), who thinks that there are enough original materials of Roman origin to be able to accredit its filiation: perfectly carved ashlars, above all in the minor vaults and in the mouths, the stone courses try to maintain the same height, the wedge-shaped cutwaters, as well as in their construction, seem Roman, the epigraphic signs that appear in some stones are characters of the ancient Iberian alphabet, very common in Roman civil works, built with local labor. In 1753 an intervention took place due to the deterioration of the bridge, carried out by the master masons José de Oñaederra, Manuel de Arribas and Gabriel Martínez. The works were reviewed by the Intendente Corregidor of the Villa and by the master builder Fray Antonio de San José Pontones. In the map of the Villa made by Francisco Coello de Portugal in 1860 it appears as ``habilitado''. It consists of 3 openings with semicircular arches. Between them there are two strong piers reinforced by two powerful wedge-shaped cutwaters-spandrels and a gabled roof that in height do not surpass the kidneys of the arches. The walls up to the abutments are made of limestone ashlars, irregular in volume; in the lower areas there is a predominance of ashlars and in the spandrels, pieces of greater depth, with an adequate carving, well assembled. In cutwaters and spurs the stone is more regular. The gabled roof and thick parapets of ashlar and ashlar crowned by a fine coping of the same material. The current pavement is composed of boulders and flagstones. There are stone stairs on both sides to access the river (left abutment).