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
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
Under Construction
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
Planning Phase
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
External links
References