Marmaray project

The scope, route, stops, targets, cars, ridership figures and history of Marmaray project, 1st phase of which was commissioned and 2nd is under construction and which will connect Asian and European side of Istanbul by rail via tunnel under Bosphorus:

Project details

Owner: Turkish State Railways
Project cost: TL 12.15 bn
Contractor: Taisei/Kumagei-Gama-Nurol (Bosphorus pass), OHL-Dimetronic (surface lines)

Target commission date: 2/2018
Commission date: 29 Ekim 2013 (1. etap)


1st phase is 13 km long connecting two continents by tunnel from Ayrilikcesme to Kazlicesme. 2nd phase is surface lines between Gebze and Ayrilikcesme (43 km) and Kazlicesme and Halkali (19 km).


Marmaray Projesi Güzergahı

Project details

Marmaray connects Europe and Asia by rail crossing Bosphorus via tunnel. Surface lines will be 3 lines, two of which are for suburban service and other line for high speed trains, other passenger trains and during night for freight trains. As project completed, high speed trains and passenger trains will arrive Haydarpaşa in Asian side.

Line length: 76.6 km
Travel time: 105 min


Halkalı (Halkalı-Kirazlı metro) – Mustafakemal – Küçükçekmece (Metrobus) – Florya – Yeşilköy – Yeşilyurt – Ataköy (Ataköy-İkitelli metro) – Bakırköy (Bakırköy-Kirazlı metro) – Yenimahalle – Zeytinburnu – Kazlıçeşme – Yenikapı (Yenikapı-Hacıosman and Yenikapı-Atatürk Hava Limanı/Kirazlı metros) – Sirkeci (Kabataş-Bağcılar tram) – Üsküdar (Üsküdar-Ümraniye-Çekmeköy metro) – Ayrılıkçeşmesi (Kadıköy-Kartal metro) – Söğütlüçeşme (Metrobus) – Feneryolu – Göztepe (Göztepe-Ümraniye metro) – Erenköy – Suadiye – Bostancı (Bostancı-Dudullu metro) – Küçükyalı – İdealtepe – Süreyyaplajı – Maltepe – Cevizli – Atalar – Başak – Kartal – Yunus – Pendik (Pendik-Kaynarca metro) – Kaynarca – Tersane – Güzelyalı – Aydıntepe – İçmeler – Tuzla (Kaynarca-Tuzla metrosu) – Çayırova – Fatih – Osmangazi – Gebze (Gebze-Darıca tram)


550 mn passengers annually

Rolling Stock

50 sets – 440 cars (Hyundai Eurotem)


2014: 43.7 mn – 2015: 60.9 mn – 2016: 62.6 mn


1998: Preliminary analysis completed

2000: Avrasyaconsult awarded for consultancy

May 2004: Taisei/Kumagei-Gama-Nurol awarded for construction of Bosphorus tunnel. Construction started on 9th May 2004. Target date: Jan 2009.

16 Oct 2008: Hyundai Rotem awarded for 440-cars-tender of Marmaray (€ 520 mn).

8 Mar 2011: Five offers delivered for second phase of Marmaray (surface lines). Best offer from OHL-Dimetronic (€ 1.04 bn). Contract inked on 26th Oct 2011. Target date: June 2015.

2012-2013: First Pendik-Gebze (29th April 2012), then Kazlıçeşme-Halkalı (1st March 2013) and finally Haydarpaşa-Pendik (19th June 2013) suburban services ended.

4 Aug 2013: First test run through Marmaray tunnel.

29 Oct 2013: Commercial runs started betwleen Ayrılıkçeşmesi-Kazlıçeşme including Bosphorus Pass.

Nov 2015: Agreement with OHL about new commission date. December 2017 instead of June 2015.

August 2016: Completion rate of 2nd phase was announced as 39.65%. Target commission date updated: 10 Feb 2018.

Cover Photo: Onur Uysal ©

rt consultancy


2 thoughts on “Marmaray project

  1. Very much enjoyed perusing your blog about Turkish railways — a subject about which I know little, unfortunately! But from what you’ve written and from the little I’ve read over the past year or so, Turkey is now an exciting place to be for the railway buff! The tunnel under the Straits linking Europe and Asia is a wonderful development, given that it brings rail freight transportation between China and Europe on step closer!

  2. Once again, thanks for the update on these remarkable construction projects — projects that should shorten the distance between European and Asian railway networks!

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