The solution designed in the Detailed Engineering phase for the section Kvesheti-Kobi reduces the length of this route from 35 km to 22 km, and the travel time from one hour to approximately 20 minutes, improving road safety conditions during operation. To achieve this, the future road will include several viaducts and tunnels, including an arch bridge, 432 m in length and with a span of 285 m over Khada valley. At the highest point of the route (3,300 m), a 9-km tunnel will be built using a 15 m in diameter tunnel boring machine (TBM).