| O-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 | |
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 | K1 |
Osmaniye | |
| Fatih | 0.9 | 0.9 | K2 | Topkapı | |
| Fatih | 1.7 | 2.6 | K3 | Vatan Cad. | Feeder to O-2 |
| Eyüp | 1.6 | 4.2 | K4 | Edirnekapı | |
| Fatih | 1.2 | 5.4 | K5 | Ayvansaray | |
| Fatih, Beyoğlu | Golden Horn Bridge | ||||
| Beyoğlu | 0.6 | 6.0 | K6 | Halıcıoğlu | |
| Kagithane | 1.8 | 7.8 | K7 | Okmeydanı | Feeder to O-2 |
| Şişli | 2.1 | 9.9 | K8 | Çağlayan | Piyalepaşa Ave. |
| Beşiktaş | 2.9 | 12.8 | K9 |
Barbaros | Barbaros Ave. Last exit before the toll bridge |
| Beşiktaş | 1.0 | 13.8 | K10 | Balmumcu | Westbound only |
| Beşiktaş | V408 / V409 | Ortaköy Viaduct[1] 411 m (1,348 ft) / 362 m (1,188 ft) |
|||
| Üsküdar | Bosphorus Bridge 1,074 m (3,524 ft) |
||||
| Uskudar | Toll plaza of the Bosphorus Bridge Toll payment for east-bound only |
||||
| Üsküdar | 3.2 | 17.0 | K11 | Beylerbeyi | |
| Üsküdar | Parking Area Westbound only |
||||
| Üsküdar | 1.6 | 18.6 | K12 |
Altunizade | Last exit before the toll bridge D.020 Feeder to O-2 |
| Kadıköy | Acıbadem |
Eastbound exit only (no entrance) | |||
| Kadıköy | 2.0 | 20.6 | K13 | Çamlıca | Feeder to O-2 |
| Kadıköy | 3.2 | 23.8 | K14 | Uzunçayır | D.100 |
| Kadikoy | 2.0 | 25.8 | K15 |
Söğütlüçeşme | |
|
||||||||||||||||||||||
