Background; the tender for Motorway Project for Gebze - Orhangazi - Izmir (including İzmit Bay Crossing and Connection Roads) was conducted on 9 April 2009 and the proposal submitted by Nurol - Özaltın -Makyol - Astaldi - Yüksel - Göçay Group was selected as to be the best proposal with 22 years and 4 months construction and operating period.

OTOYOL YATIRIM VE İŞLETME A.Ş. was founded on 20 September 2010 to perform the works of construction, operation and transfer of Gebze - Orhangazi – Izmir (including İzmit Bay Crossing and Connection Roads) Motorway Project through Build - Operate - Transfer model.

The project implementation agreement was signed between the General Directorate of Highways and OTOYOL YATIRIM VE İŞLETME A.Ş. on 27 September 2010.

The ceremony for start of construction works in Gebze for Gebze - Orhangazi - Izmir Motorway Project took place on 28 October 2010 in Dilovasi district of Kocaeli Province and Ceremony for start of construction works in İzmir was held in Alsancak Cumhuriyet Square on 27 February 2011.

İstanbul - Bursa - İzmir   Motorway Phase I, Intersections between Gebze and Gemlik (including Osmangazi Suspension Bridge) have been opened to traffic on July 1, 2016.  

The construction and acceptance of Phase II A (Gemlik - Bursa) were completed and opened to traffic on 12 March 2017 with the opening ceremony.

As the part of Phase II B, acceptance and the start of the commissioning between Saruhanlı-Kemalpaşa Intersections were on December 1, 2018, Balıkesir North-Balıkesir West and Akhisar-Saruhanlı Intersections were on March 17, 2019, Bursa West – Balıkesir North and Balıkesir West-Akhisar Intersections were on August 4, 2019. 

Otoyol  Yatırım ve İşletme A.Ş.

Procured services such as gulf soil surveys, motorway route soil surveys, signature of Motorway and Suspended Bridge construction contract and design works, legal infrastructure studies and project consultancy services for the motorway project and performed activities required for preliminary preparation activities in physical aspects and project financing.

The Project financing for Phase I (from Gebze to Gemlik Intersection including the Osmangazi Suspension Bridge) and Phase II A (from Gemlik Intersection to Bursa Intersection)  were completed in the first quarter of 2013 and in the second quarter of 2014, respectively.

The process of refinancing this debt to extend the maturity and secure required additional funding of 3 billion USD for Phase II B (from Bursa Intersection to İzmir) was completed by signing the finance documents on June 05,2015. Thus, the funding required for the entire project in the form of refinanced loan of 2 billion USD for Phase I and Phase II A as well as funding required for Phase II B have been secured with a new loan package amounting to 4,956 billion USD. The total investment amount for the entire project is estimated to be 7,2 billion USD, funded from 4,956 billion USD debt, 1,4 billion USD equity and 800 million USD net early operational revenue. As of the end of December 2019, approximately 7,13 billion USD has been spent towards project costs, divided as follows: Phase I 2,80 billion USD, Phase II A 770 million USD and Phase II B 3,56 billion USD.

Turkish Lenders;

Akbank, Finansbank, Ziraat Bankası, Garanti Bankası, Halk Bankası, İş Bankası, Vakıflar Bankası, Yapı ve Kredi Bankası.

Foreign Lenders;

Deutsche Bank, Saudi National Commercial Bank, Bank of China, Siemens Bank.

Project and Route

The advantage to be provided by shortening of distance 140 km  in comparison to  current state highway have been estimated and as  a result it has been foreseen that the travel time between İstanbul-İzmir which is 8-10 hours now, will decrease to 3,5 – 4 hours

The starting point of the project is Gebze and the Motorway crosses İzmit bay located between Dilovası and Hersek through a Suspension Bridge of approx 3.000 meters length, then will extend to Orhangazi and Gemlik and be connected to Bursa Ring Road at Ovaakça intersection.

 Following the Bursa Ring Road which is already operational, the Motorway reaches Balıkesir starting with Bursa - Karacabey intersection and continuing through the north of Susurluk. It continues south from the west of Balıkesir, ahead  via Savaştepe, Soma, Kırkağaç districts and continues towards the west near Turgutlu. It moves along  paralel to İzmir - Uşak state highway  and finally connects with Anadolu Lisesi intersection over the İzmir ring road. 

The project has a total length of 426 km including a highway length of 384 km and an access road length of 42 km. Along the route, there are 38 viaducts with a total length of 21.571 m, including The Northern / Southern Approach Viaducts, 3 tunnels with a total length of 6.446 m, 179 bridges, 20 toll collection areas, 22 intersections, 4 Highways and 2 Tunnel Maintenance-Operation Centres, as well as 17 Service Stations and Parking Areas.

Phone : +90 (312) 291 3300

Fax       :+90 (312) 266 0995

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Web Site:

Address:Üniversiteliler Mah. Bilkent Plaza A3 Blok No:21-24 Bilkent
Çankaya 06800 ANKARA - TURKEY