• Completion Date: 30-06-2018
  • client: General Directorate of Infrastructure Investments of Ministry for Transport Maritime Affairs and Communication
  • Name of Work:
    Supervision, Consultancy and Engineering Services of the Construction, Operation and Transfer of Istanbul Strait Highway Tube Crossing from Asia to Europe


The total length of 15,4 km, 3.34 km two story undersea 2 x 2 highway tunnel with a diameter of 13.70m (TBM). Deep elevation of the road is -106m below sea level. It is one of the most prestigious and unique transportation construction in Turkey’s history. It connects the Asian side of Istanbul to the European side allowing drop in traffic congestions for the Bosphorus bridge.

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