Dicle Bridge (On Gozlu Bridge) The Diyarbakir Dicle Bridge, also known as the On Gözlü Köprü (Ten Arches Bridge) or Silvan Bridge, is situated south of the city spanning the Tigris River. Built between 1065-1067 by the Marwanids, who were a Seljuk-ruled emirate, the bridge was constructed out of hard basalt stone. Over time, the bridge has undergone numerous repairs due to being severely damaged by floods. As a result, some parts of the original construction may have been altered. The bridge consists of ten arches of varying sizes and is part of the group of straight bridges. The width between the walkways differs throughout the bridge, with some parts wider than others. Flood breakers have been installed at the entrances to the bridge, some of which rise to the same height as the road bed. An inscription along the side displays the bridge's name, including one line created with a long band that starts at an archway on one side of the estuary and is located midway between two parapets at either end. The bridge is located 3 kilometers (1.9 miles) outside the Mardin Gate to the south of the city. It measures 178 meters in length and is 5.6 meters wide at some points, with the longest span between arches measuring 14.7 meters.