Otoyol 1

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O-1 shield}}

O-1
Otoyol 1
Istanbul Inner Beltway
İstanbul 1. Çevreyolu
Major junctions
From: Osmaniye, Bakırköy, Istanbul
To: Söğütlüçeşme, Kadıköy, Istanbul
Location
Regions: Marmara
Provinces: Istanbul Province
Major cities: Istanbul
Highway system

Highways in Turkey
Motorways • State roads

Otoyol 1 (English: Motorway 1), abbreviated as O-1, aka İstanbul 1. Çevreyolu (English: Istanbul Inner Beltway), is a motorway in Istanbul, Turkey that forms the inner half ring road of the city connecting European and Asian parts via the Bosphorus Bridge.

It starts Osmaniye neighborhood in Bakırköy district on the European part, runs through the city over the Golden Horn and the Bosporus, and terminates in Söğütlüçeşme neighborhood of Kadıköy district on the Asian part. Otoyol 1 is toll-free, however the Bosporus Bridge is a toll bridge in the eastward direction only, having its toll plaza at the Asian side. O-1 is connected via three feeder highways to İstanbul 2. Çevreyolu (Istanbul Outer Beltway) O-2.

District km Exit No. Destinations Notes
Bakırköy 0 0 AB-AS-blau.svg K1
Zeichen 331.svg
Osmaniye
Fatih 0.9 0.9 AB-AS-blau.svg K2 Topkapı (Also serves to Aksaray, Fatih, Taksim)
Fatih 1.7 2.6 AB-Kreuz-blau.svg K3 Vatan Cad. (Also serves to Aksaray, Bayrampaşa, Gaziosmanpaşa, Esenler and Bağcılar) Feeder to O-2
Eyüp 1.6 4.2 AB-AS-blau.svg K4 Edirnekapı (Also serves to Fatih and Bayrampaşa)
Fatih 1.2 5.4 AB-AS-blau.svg K5 Ayvansaray (Also serves to Eyüp)
Fatih, Beyoğlu AB-Brücke.svg Golden Horn Bridge
Beyoğlu 0.6 6.0 AB-AS-blau.svg K6 Halıcıoğlu (Also serves to Kasımpaşa and Sütlüce)
Kagithane 1.8 7.8 AB-Kreuz-blau.svg K7 Okmeydanı (Also serves to Dolapdere and Kasımpaşa) Feeder to O-2 (Also serves to Kağıthane and Kemerburgaz)
Şişli 2.1 9.9 AB-Kreuz-blau.svg K8 Çağlayan (Also serves to Şişli and Kağıthane) Piyalepaşa Ave.
Beşiktaş 2.9 12.8 AB-AS-blau.svg K9
Zeichen 336.svg AB-grün.svg
Barbaros Barbaros Ave.
Last exit before the toll bridge
Beşiktaş 1.0 13.8 AB-AS-grün.svg K10 Balmumcu (Also serves to Beşiktaş and Sarıyer) Westbound only
Beşiktaş AB-Brücke.svg V408 / V409 Ortaköy Viaduct[1]
411 m (1,348 ft) / 362 m (1,188 ft)
Üsküdar AB-Brücke.svg
Bosphorus Bridge 1,074 m (3,524 ft)
Uskudar Péage - paiement.png Toll plaza of the Bosphorus Bridge
Toll payment for east-bound only
Üsküdar 3.2 17.0 AB-AS-grün.svg K11 Beylerbeyi (Also serves to Üsküdar and Beykoz)
Üsküdar Zeichen 314.svg Parking Area
Westbound only
Üsküdar 1.6 18.6 AB-ende-grün.svg Zeichen 331.svg
AB-Kreuz-blau.svg K12
Altunizade (Also serves to Üsküdar) Last exit before the toll bridge
D.020 Feeder to O-2 (Also serves to Çamlıca, Ümraniye and Şile)
Kadıköy AB-AS-blau.svg Acıbadem
Eastbound exit only (no entrance)
Kadıköy 2.0 20.6 AB-Kreuz-blau.svg K13 Çamlıca Feeder to O-2
Kadıköy 3.2 23.8 AB-Kreuz-blau.svg K14 Uzunçayır D.100
Kadikoy 2.0 25.8 Zeichen 336.svg
AB-AS-blau.svg K15
Söğütlüçeşme (Also serves to Kadıköy and Üsküdar and bounded to costroad from Üsküdar to Alt Kaynarca)

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