The Roman Bridge of Patras was found in the early 1980s, because ongoing excavation works in the area in order to build a private house. This is the best preserved double-arched bridge in Greece. The bridge was built in the 4th century AD above Kallinao the river, that now flows about 100 m. south and was identified incorrectly with Meilichos river. It was integrated in the provincial public highway linking Patras with Aigio (via publica). The macadam road, the section passing over the bridge is paved with slabs, where ruts are still visible created by the dense passage of wheeled vehicles of the time. In this section, right and left, there is a low barrier to protect bystanders, built of bricks and also other architectural element. For the reorganization of the riverbed and safe foundation there were layered older architectural finding from damaged buildings (columns, stone plinths etc.). This bridge replaced an older one dated at the 1st century AD, still possible to view a little further to the south. It is much smaller, arched and made of limestone. After the construction of the new bridge the opening of the former was narrowed, so to less pass a smaller amount of water, presumably used for the irrigation of the area. Simultaneously casing walls for riverbed were built. For the older bridge in accordance with the honorary inscription found, the cost was covered by Mesatefs Artemios, uniting this way Patras with his hometown, Mesati. A few centuries later, after a terrible flood, the river bed was destroyed completely, and a new one was drilled to the south. Nevertheless, although the bridges were destroyed, the road over them remained in use for much longer. In recent excavations (2001) the old river bed was found.