The road to Demirkent village on the way from Yusufeli to Artvin, located at the north-east of Turkey had to be relocated as it will be flooded by the reservoir of the Artvin Dam. The retaining structures supporting the relocated road, designed using hybrid structures made up of gabion baskets produced from double twist wire mesh as the facing element and high strength geogrids, were constructed on the right bank of the reservoir between tunnels T6 and T7. Eight walls, having a total surface area of nearly 11,000 sq.m , reaching a maximum height of 25.0 meters, were the first hybrid MSE walls of its kind built in a highway project in Turkey. The area is located in the second degree seismic zone of Turkey. The design of walls has been carried out using pseudo-static method (limit equilibrium) taking into consideration different loading conditions using Eurocode 7. For each standard approach stability analyses in static and seismic conditions were performed. The paper deals with the detailed design of the MSE wall system and the construction methods; advantages of using such system for the project are discussed.
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