m Şanlıurfa, Suruç Water Tunnel – 1 x 17,185 m Blue Tunnel – 1 x 17,034 m Northern Cyprus Water Tunnel (under construction) – 1 x 5,700 m Bosporus Water Tunnel – 1 x 5,551 m Gaziantep(Nurdağı), Belpınar Water Tunnel – 1 x 5,450 m See also List of tunnels by location List of motorway tunnels in Turkey Turkey Lists of buildings and structures in Turkey Turkey transport-related lists