7,212 m-long double tube tunnel project, connecting Dolmabahçe to Kağıthane. Project consists of 1,506 mt long and 1,517 mt long double tube Kağıthane - Piyalepaşa Tunnel and 2,340 mt long and 2,350 mt long double tube Bomonti - Dolmabahçe Tunnel. Tunnel section area is 108 m2.
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