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Otoyol

Route markers for three Turkish Motorways
Otoyol network in Turkey. Motorways in use, under construction and projected.
System information
Maintained by Karayolları Genel Müdürlüğü
Formed1968
Highway names
Otoyols:Otoyol XX (O-XX)
System links

Otoyol routes in Turkey follow a regional based two-digit numbering system. All routes have the prefix O on all signage and maps. Motorways that start in the Marmara Region are all single digit. Motorways that start in The Central Anatolia Region have a first digit of two. Motorways starting in the Aegean Region have a first digit of three. Motorways starting in the Mediterranean Region and Southeastern Anatolia Region have a first digit of five. The O-21A is the only motorway to have a letter assigned to it. Most motorways in Turkey have six lanes (3+3 lanes), however there are sections of some motorways with only four (2+2) lanes. The motorways extended to 27 of the country's 81 provincial-level administrative divisions.

As of December 2023, there are 3,726 km of toll motorways network (otoyollar) in service.[2]

List of Otoyol routes[edit]

Number Length (km) Length (mi) Northern or western terminus Southern or eastern terminus Built Notes
O-1 20.5 12.7 in Eyüpsultan, Istanbul Bağdat Avenue in Kadıköy, Istanbul 1973 Istanbul Inner Beltway
O-2 36.9 22.9 O-3 in Mahmutbey, Istanbul in Kozyatağı, Istanbul 1988 Istanbul Outer Beltway
O-3 246.9 153.4 near Edirne in Eyüpsultan, Istanbul 1987
O-4 372 231.2 O-2/O1-O2 connector in Ataşehir, Istanbul O-20 near Sincan, Ankara 1984
O-5 409.4 254.4 O-4 near Gebze, Kocaeli O-30 in Bornova, İzmir 2016 till 2019 Section from Bursa North to Gebze including Osman Gazi Bridge opened in 2016.
O-6 101 62.8 near Malkara, Tekirdağ near Lapseki, Çanakkale 2022 Section from Malkara to Lapseki including 1915 Çanakkale Bridge, the longest suspension bridge in the world, opened in 2022.
O-7 275.2 171.1 O-3 near Kınalı, Istanbul O-4 near Akyazı, Sakarya 2016 till 2020 Yavuz Sultan Selim Bridge opened in 2016.
O-20 110 68.4 Road forms complete ring around Ankara Road forms complete ring around Ankara 1987 Ankara beltway
O-21 399.5 248.3 O-20 near Gölbaşı, Ankara near Tarsus, Mersin 1984 till 2020
O-21A 32 19.9 near Çakmak Bucağı, Konya O-21 near Eminlik, Niğde 1992
O-22 34.1 21.2 O-5 near Çağlayan, Bursa near Turanköy, Bursa 2006
O-30 60.4 37.5 O-33 in Menemen, İzmir O-32 in Balçova, İzmir 1993 till 2006 Izmir Beltway
O-31 127.8 79.4 O-30 in Buca, İzmir in Aydın 1996 till 2004
O-31 93 57.8 in Kuyucak, Aydın in Denizli 2023
O-32 77.7 48.3 in Çeşme, İzmir O-30 in Balçova, İzmir 1992 till 1996
O-33 76 47 Port of Çandarlı near Çandarlı, İzmir O-30 in Menemen, İzmir 2019
O-51 99.2 61.6 in Çeşmeli, Mersin O-52 in Adana 1992
O-52 365 226.8 O-51 in Adana near Şanlıurfa 1992
O-53 150 93.2 O-52 near Ceyhan in İskenderun 1993
O-54 35 21.7 in Gaziantep O-52 in Gaziantep 2013 Gaziantep Beltway

Projects[edit]

Under Construction[edit]

Number Length (km) Length (mi) Northern or western terminus Southern or eastern terminus Opens Notes
O-6 114 70.8 near Malkara, Tekirdağ O-3 near Kınalı, Istanbul Part of Kınalı-Balıkesir Motorway.
O-7 45 28 O-7 near Nakkaş, Istanbul O-7 near Başakşehir, Istanbul 2025
O-31 72 44.7 O-31in Aydın in Kuyucak, Aydın 2024
O-51 41 25.8 in Kızkalesi, Mersin O-51 near Çeşmeli, Mersin 2025
O-51 155 96.3 in Antalya in Alanya Part of Afyon–Antalya–Alanya Motorway. Afyonkarahisar-Burdur-Antalya section still in planning phase.
O-53 78 48.5 O-53 near İskenderun, Hatay near Cilvegözü, Reyhanlı, Hatay İskenderun-Cilvegözü Motorway (border crossing)
31.3 19.5 O-53 near Dörtyol, Hatay near Hassa, Hatay Dörtyol-Hassa Motorway
119 73.9 O-20 in Mamak, Ankara in Delice, Kırıkkale Part of Ankara-Samsun Motorway. Delice-Samsun section still in planning phase.

Tender Phase[edit]

Number Length (km) Length (mi) Northern or western terminus Southern or eastern terminus Tender Date Notes
130 80.8 O-22 in Sivrihisar, Eskişehir O-20 in Tulumtaş, Ankara Part of Izmir–Ankara Motorway. İzmir-Sivrihisar section still in planning phase.
O-52 454 282.1 O-52 near Şanlıurfa near Habur, Silopi, Şırnak Şanlıurfa-Mardin-Habur Motorway (including link to Diyarbakır) (border crossing)

Planning Phase[edit]

Number Length (km) Length (mi) Northern or western terminus Southern or eastern terminus Tender Date Notes
O-51 30 18.1 in Taşucu in Kızkalesi N/A
12 7.46 O-30 near Sasalı, İzmir O-30 near İnciraltı, İzmir N/A İZKARAY [tr] - Gulf of İzmir Passage Project between Çiğli (Sasalı) and Balçova (İnciraltı); including one undersea tunnel and one bridge
41 25.5 O-33 near Menemen, İzmir O-30 near Buca, İzmir N/A İzmir 2. peripheral motorway
O-31 155 96.3 O-31 in Denizli near Bucak, Burdur N/A Denizli-Burdur section of Aydın-Denizli-Burdur Motorway
O-6 137 85.1 near Lapseki, Çanakkale O-5 near Balıkesir N/A Lapseki-Balıkesir section of Kınalı-Balıkesir Motorway
350 217.5 } near Afyonkarahisar near Antalya N/A Afyonkarahisar-Burdur-Antalya Motorway [tr]
408 253.5 O-5 near Turgutlu, Manisa O-22 near Sivrihisar N/A Sivrihisar-İzmir section of Ankara-İzmir Motorway
O-22 231 143.5 O-5 near Kestel, Bursa O-22 near Sivrihisar, Eskişehir N/A Sivrihisar-Bursa Motorway
303 188.3 near Samsun near Delice, Kırıkkale N/A Delice-Samsun section of Ankara-Samsun Motorway
144 89.5 near Bafra, Samsun near Ünye, Ordu N/A Bafra-Samsun-Ünye Motorway
137 85.2 O-4 in Gerede, Bolu in Ilgaz, Çankırı N/A Part of Gerede-Gürbulak Motorway [tr]. Ilgaz-Merzifon-Koyulhisar-Pülümür-Horasan-Gürbulak sections still in planning phase.
183 113.7 near Ilgaz, Çankırı near Merzifon, Amasya N/A Ilgaz-Merzifon Motorway [tr]
919 571 near Merzifon, Amasya near Gürbulak, Doğubayazıt, Ağrı N/A Merzifon-Gürbulak Motorway [tr] (border crossing)
91 56.6 O-5 near Yalova O-4 near İzmit, Kocaeli N/A Yalova-İzmit Motorway [tr]
440 273.4 near Afyonkarahisar near Ulukışla, Niğde N/A Afyonkarahisar-Konya-Ereğli-Niğde (Ulukışla) Motorway
105 65.3 near Bozüyük, Bilecik near Afyonkarahisar N/A Bozüyük-Afyonkarahisar Motorway
O-51 200 124.3 near Alanya, Antalya near Silifke, Mersin N/A Alanya-Silifke Motorway
105 65.3 O-4 near Düzce near Zonguldak N/A Düzce-Zonguldak Motorway
500 310.7 near Delice, Kırıkkale near Refahiye, Erzincan N/A Delice-Sivas-Refahiye Motorway
600 372.8 O-21 near Nevşehir near Diyarbakır N/A Nevşehir-Kayseri-Malatya-Diyarbakır Motorway
220 136.7 near Sivas near Malatya N/A Sivas-Malatya Motorway
50 31.1 O-52 near Şanlıurfa near Akçakale, Şanlıurfa N/A Şanlıurfa-Akçakale Motorway (border crossing)
475 295.2 near Diyarbakır near Gürbulak, Doğubayazıt, Ağrı N/A Diyarbakır-Gürbulak Motorway (border crossing)
540 335.6 near Trabzon near Kahramanmaraş N/A Trabzon-Refahiye-Malatya-Kahramanmaraş Motorway
250 155.4 near Pasinler, Erzurum near Türkgözü, Posof, Ardahan N/A Pasinler-Türkgözü Motorway (border crossing)
460 285.8 near Rize near Diyarbakır N/A Rize-Erzurum-Diyarbakır Motorway
O-33 80 49.7 O-33 near Çandarlı, Dikili, İzmir O-5 near Savaştepe, Balıkesir N/A Çandarlı-Bergama-Savaştepe Motorway
90 55.9 O-31 near Aydın near Muğla N/A Aydın-Muğla Motorway
75 46.6 near İpsala, Edirne near Malkara, Tekirdağ N/A Malkara-İpsala Motorway (border crossing)
130 80.8 O-3 near Havsa, Edirne near Kavakköy, Gelibolu, Çanakkale N/A Havsa-Gelibolu Motorway
180 111.9 near Lapseki, Çanakkale O-5 near Karacabey, Bursa N/A Lapseki-Karacabey Motorway

See also[edit]

External links[edit]

References[edit]

  1. ^ Length of Motorways
  2. ^ "YILLAR İTİBARIYLA YAPIMI TAMAMLANMIŞ OTOYOLLAR [Motorway completed by years] (2023)" (PDF). kgm.gov.tr. Karayolları Genel Müdürlüğü (KGM). Retrieved 2024-01-05.
source: https://en.wikipedia.org/wiki/List_of_motorways_in_Turkey

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