Otoyol 1 (English: Motorway 1), abbreviated as O-1 and locally referred to as The First Beltway (Turkish: 1. Çevreyolu), is a controlled access highway in Istanbul, Turkey. The O-1 serves as the inner beltway and is one of three intercontinental motorways in the city, the others being the O-2, and O-7, as well as connecting the European and Asian parts of the city via the Bosphorus Bridge.

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O-1
The First Beltway
1. Çevreyolu
Route information
Length24 km (15 mi)
Existed1973–present
Major junctions
West end D.100, O-3 in Eyüp, Istanbul
East endBağdat Ave. in Kadıköy, Istanbul
Location
CountryTurkey
RegionsMarmara
ProvincesIstanbul Province
Major citiesIstanbul
Highway system
  O-2

It starts Osmaniye neighborhood in Bakırköy district on the European part, runs through the city over the Golden Horn and the Bosphorus, 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 both directions, having its toll plaza at the Asian side. The O-1 is connected via three feeder highways to The Second Beltway.

O1 Haliç Bridge Halıcıoğlu entrance
O1 Haliç Bridge Ayvansaray entrance

Exit list

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ProvinceDistrictkmmiExitDestinationsNotes
IstanbulEyüpsultan0.00.0K1  O-3Edirne /   D.100Kapıkule
1.20.75K2Rami Kışla Cd.Eastbound entrance and westbound exit
1.60.99K3Yavedut Cd. / Beylerbeyi Cd. / Halıcıoğlu Okmeydani Cd.
Golden Horn1.91.2Haliç Bridge
Beyoğlu2.81.7K4Halıcıoğlu Okmeydani Cd.Westbound exit
3.72.3K5  P.34-89Eastbound entrance
Kağıthane4.42.7K6Hasdal-Okmeydanı connector —   O-2
4.52.8K7Darülaceze Cd.Eastbound entrance
6.54.0K8Piyalepaşa Blv.
Şişli8.35.2K9Büyükdere Cd.Eastbound exit via K8
9.45.8K10Barbaros Blv.
Beşiktaş10.76.6K11Barbaros Blv.Eastbound entrance and westbound exit
Bosphorus11.87.3Bosphorus Bridge (₺24.00 toll)
Üsküdar13.88.6K12Beylerbeyi Kavşağı
15.29.4K13Şile Motorway  O-2
16.09.9K14Acıbadem Cd.Eastbound exit
16.910.5K15  O-4  O-2, Kocaeli, AnkaraEastbound exit, westbound entrance and exit
18.411.4K16  D.100Gürbulak
Kadıköy19.912.4K17F. Kerim Gökay Cd.Eastbound exit and westbound entrance
20.512.7-Bağdat Cd.Trumpet interchange
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

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References

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