 ለ Marmaray Bosphorus Tube Crossing ፕሮጀክት የምዕራባዊ ምሕንድስና በ 13 ታህሳስ 2001 ላይ ተካሂዷል እና ሥራው በ 14 March 2002 ላይ ተጀምሮ, የግንባታ ቅድመ-ጨረታው በ 25 ሐምሌ 2002 ነበር.
Mashruuca injineernimada ee mashruuca Marmaray Bosphorus Tube Project ayaa lagu sameeyey 13 December 2001 waxaana shaqadu ka bilaabmey 14 March March 2002, iyo hindisaha hordhaca ah ee dhismaha waxaa lagu sameeyey 25 July 2002.