Northeast of Karakus tumulus, this surviving Roman bridge spans the Kahta river in one single arch at its narrowest point and contains 92 course cut stones each weighing around 10 tons. There are a total of three columns at the entrance and exit of the bridge, around 10m high. It was constructed in early 200 AD by the 16th Roman Legion, which established its headquarters in Samsat further south. According to inscriptions the Roman ruler Septumus Severus built it in the name of his wife, Julia Domna.