The date of the tender for the survey, project and engineering services – the first step in the 3 Storey Great Istanbul Tunnel project to be organized by the Infrastructure Investments General Directorate of the Ministry of Transport, Maritime Affairs and Communications – which had been announced as 14 December, has been delayed to 23 December. Deep drilling will be carried out both on land and sea within the scope of the project in order to determine the ground data. It is planned that the engineering projects will be completed within 1 year, following the tender process.
Both road and railroad
The 3 Storey Great Istanbul Tunnel, which will pass beneath the Bosphorus, will be comprised of both a road and a railroad in a single tube. The middle layer will have a two-way railroad, while the upper and lower layers will be built in a manner suited to the passage of rubber tire vehicles, and will consist of two lanes each.
The tunnel to be passed in 40 minutes
The tunnel will be integrated with 9 metro lines and the TEM, E-5 and Northern Marmara Highways. It is aimed that the tunnel, the construction of which will begin with the Build – Operate – Transfer model, will be completed within 5 years. Once completed, it will be comprised of 14 stations along a 31 kilometer route from Incirli on the European side to Söğütlüçeşme on the Anatolian side, and it will take 40 minutes to reach one end from the other with a fast metro. The Çamlık junction on the Anatolian side will be reached from the Hasdal junction on the European side in approximately 14 minutes. It is expected that 6.5 million passengers will benefit from the line every day.