The Osmangazi Bridge is a suspension bridge spanning the Gulf of İzmit at its narrowest point, 2,620 m (8,600 ft). The bridge links the Turkish city of Gebze to the Yalova Province and carries the O-5 motorway across the gulf.
The bridge was opened on 1 July 2016 to become the longest suspension bridge in Turkey and the fourth-longest (sixth-longest as of 2021) suspension bridge in the world by the length of its central span.