Marmaray Project

transport project, Turkey

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Last updated

July 19, 2026

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The Marmaray Project is a significant transportation initiative in Turkey, primarily focused on connecting the European and Asian sides of Istanbul. It features a rail line that runs through a tunnel beneath the Bosporus strait, integrating various modes of rail transportation within the city. The Sea of Marmara itself, which the project traverses, is an inland sea that separates the two continents of Turkey. This sea is connected to the Black Sea and the Aegean Sea via straits and is known for its depth and marble quarries, which gave the sea its name.12

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Turkey
Transportation
In response, the Marmaray Project was undertaken to improve approximately 45 miles (75 km) of Turkey’s railway network. The massive transport project was anticipated to upgrade rail service around Istanbul and included an ambitious rail tunnel running beneath the Bosporus to connect the European and Asian halves of…
Read More
In response, the Marmaray Project was undertaken to improve approximately 45 miles (75 km) of Turkey’s railway network. The massive transport project was anticipated to upgrade rail service around Istanbul and included an ambitious rail tunnel running beneath the Bosporus to connect the European and Asian halves of…
Read More