The Roman bridge of Salamanca is a construction that dates back to the middle of the 1st century, to allow the crossing of the Vía de la Plata over the Tormes River as it passed through the city. Throughout its history it has undergone several repairs to safeguard its "integrity". It is the symbol of the city and together with the silhouette of the cathedrals, it forms an unparalleled image. It was recognized as an Artistic Monument on June 3, 1931 and as an Asset of Cultural Interest in 1998. It bears the first barracks of the city's shield and the well-known boar.