Otoyol 5


Otoyol 5, named the Gebze-Orhangazi-İzmir Motorway and abbreviated as O-5, is a toll motorway in Turkey. Since being completed in 2019, it connects the Istanbul metropolitan area with İzmir, via Bursa and Balıkesir. The O-5 runs parallel to the D575 and the D565 for most of its length and is a major motorway in Turkey as it provides a direct connection between Istanbul and its surrounding metropolis to the country's 3rd largest and 4th largest cities, bypassing the Gulf of İzmit via the Osman Gazi Bridge. The O-5 also makes up part of the International E-road network E881.
The western part of the Bursa Beltway, which is part of the O-5, was completed during the 2000s. The rest of the O-5 has been under construction since the early 2010s, with the first portion opened from Altinova to Gemlik in April 2016. As of April 2017, the O-5 is open in two separate sections: the section from its northern terminus in Gebze to Bursa, across the Osman Gazi Bridge along with a section from Kemalpaşa to its southern terminus in İzmir. The final section, Karacabey to Akhisar, opened on August 5th, 2019.
The O-5 is the most expensive toll motorway in Turkey as the price for a personal vehicle from Gebze to Bursa, via the Osman Gazi Bridge costs 91.65.

Gebze-Orhangazi-İzmir Motorway Project details

The project includes the Osman Gazi Bridge, the Gebze-Bursa section and the Bursa-İzmir section of Otoyol 5. It is a build-operate-transfer project which was awarded to a consortium consisting of 5 companies.

Key dates