ABSTRACT
The Double Tube Sarayköy tunnels are constructed in the scope of the Black Sea coastal road projects by the Republic of Turkey, General Directorate of Highways, 10th District Directorate and are located on I
. yidere-
Çayeli section. On the 1818 meters-long tunnel route, main entrances are on the Trabzon and Rize sides, and two additional portals are required (where) due the valley on the mid-route.
