 | ||||
|---|---|---|---|---|
| The First Beltway 1. Çevreyolu | ||||
 | ||||
| Route information | ||||
| Length | 24.8 km (15.4 mi) | |||
| Existed | 1973–present | |||
| Major junctions | ||||
| West end |  D.100, osmaniye inBakırköy,Istanbul | |||
| East end | Bağdat Ave. inKadıköy,Istanbul | |||
| Location | ||||
| Country | Turkey | |||
| Regions | Marmara | |||
| Provinces | Istanbul Province | |||
| Major cities | Istanbul | |||
| Highway system | ||||
| ||||
Otoyol 1 (English:Motorway 1), abbreviated asO-1 and locally referred to asThe First Beltway[1] (Turkish:1. Çevreyolu), is acontrolled access highway inIstanbul,Turkey. The O-1 serves as the inner beltway and is one of three intercontinentalmotorways in the city, the others being theO-2, andO-7, as well as connecting the European and Asian parts of the city via theBosphorus Bridge.
It starts Osmaniye neighborhood inBakırköy district on the European part, runs through the city over theGolden Horn and theBosphorus, and terminates in Söğütlüçeşme neighborhood ofKadıköy district on the Asian part. Otoyol 1 is toll-free, however the Bosporus Bridge is a toll bridge in both directions, having its toll plaza at the Asian side. The O-1 is connected via three feeder highways toThe Second Beltway.
| Province | District | km | mi | Exit | Destinations | Notes |
|---|---|---|---|---|---|---|
| Istanbul | Bakırköy | 0.0 | 0.0 | K1 | Osmaniye junctionD.100- | northbound Mehmetakif cd.southbound Ekremkurt Blv. |
| Zeytinburnu | 2.6 | 1.6 | K2 | Topkapı junction | northbound exit. southbound entrance | |
| 4.4 | 2.7 | K3 | Vatan caddesi junction | southeastboundFatih, nourthwestboundBayrampaşa | ||
| Eyüpsultan | 5.2 | 3.2 | K4 | Edirnekapı junction | southeastboundFatih | |
| 6.1 | 3.8 | K5 | Ayvansaray junction | southeastboundFatih | ||
| Golden Horn | 6.5 | 4.0 | Haliç Bridge | |||
| Beyoğlu | 7.2 | 4.5 | K6 | Halıcıoğlu junction | ||
| Kağıthane | 8.8 | 5.5 | K7 | Okmeydanı junction | Hasdal O-2 — Okmeydanı connector | |
| Şişli | 10.9 | 6.8 | K8 | Çağlayan junction | southbound Piyalepaşa Blv. | |
| Beşiktaş | 13.8 | 8.6 | K9 | Barbaros junction | nourthboundBüyükdere Cd.-O-2 connection path, southboundBarbaros Blv. | |
| 15.1 | 9.4 | K10 | Balmumcu junction | Barbaros Blv. | ||
| Bosphorus | 16.3 | 10.1 | Bosphorus Bridge (₺47.00 toll:13/01/2025) | |||
| Üsküdar | 18.2 | 11.3 | K11 | Beylerbeyi junction | ||
| 19.5 | 12.1 | K12 | Altunizade junction | eastbound Ümraniye-O-2 connection path | ||
| 21.4 | 13.3 | K13 | Çamlıca junction | O-2, O-4Kocaeli ProvinceAnkara | ||
| 22.8 | 14.2 | K14 | Uzunçayır junction | D.100Kocaeli ProvinceAnkara | ||
| Kadıköy | 24.8 | 15.4 | K15 | Söğütlüçeşme junction | Bağdat Cd. | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | ||||||
| Current |  | |
|---|---|---|
| Former | ||
| Planned | ||
| ||
