183. (Bursa-Keles) Junction - Orhaneli Provincial Road Doğancı Dam Variant Between Km:9+600-13+205 Earthworks, Engineering Buildings Bridge Tunnel and Superstructure Works Construction Supply Work Doğancı Viaduct Application Project Preparation Work

- Preparation of Doğancı Viaduct final design projects

General Directorate of Highways 14'th Division Directorate

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