Kadıoğlu Tunnel

Kadıoğlu Tunnel (Kadıoğlu Tüneli), is a highway tunnel constructed in Ordu Province, northern Turkey.

Kadıoğlu Tunnel is part of the Samsun-Ordu Highway  within the Black Sea Coastal Highway, of which construction was carried out by the Turkish Nurol-Tekfen-Yüksel joint venture. The 116 and 150 m-long twin-tube tunnel carrying two lanes of traffic in each direction. The Kozbükü Tunnel follows the Kadıoğlu Tunnel in direction Ordu.

The tunnel was opened to traffic on 7 April 2007 by Turkish Prime Minister Recep Tayyip Erdoğan. Dangerous goods carriers are not permitted to use the tunnel.