Üsküdar: Rough construction is over. Fine construction work has begun. The station is 80 percent complete. The union of the tube tunnels with the black tunnels was completed and the ventilation system was dismantled. Ventilation is done naturally in the tunnel. Evacuation tunnels, which are located every 250 meters under the Bosphorus, are about to be completed.
Ayrılıkçeşme: 4 tunnels with a total length of 200 meters, extending to Kızkulesi, were completed. Rail laying works that will continue until Kazlıçeşme have started.
Yedikule: Two tunnels with a total length of 4 meters connecting Yenikapı were completed.
Yenikapı: Rough construction is largely finished.
Kazlıçeşme: The station, where 50 percent of its rough construction is completed, will be completed this year.
Sirkeci: Construction continues in the underground station. Archaeological excavations continue at three points. Some of the archaeological excavations will end at the end of the month and construction of the passenger entrance and exit sections will begin. The archaeological excavations at the other two points are expected to be completed during the year.