The Great Istanbul Tunnel (Turkish: Büyük İstanbul Tüneli) is an under-construction multi-use highway and railway undersea tunnel in Istanbul, Turkey to cross the Bosphorus strait connecting the Europe side and Asia side.
[1] The project was officially announced by Prime minister Ahmet Davutoğlu on 27 February 2015.
[6] The RV Fugro Scout, a Singapore-flagged research/survey vessel of 83 m (272 ft) length and 20 m (66 ft) beam,[7] started soil survey works in Bosphorus on 28 July 2017 in order to determine the exact tunnel route.
[1] Due to some issues in land acquisition, the project is now expected to be completed by 2028.
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