Otoyol 1

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.

Bosporus Bridge on the O-1, seen from the Asian side

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 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

See also

• List of highways in Turkey

References

1. ^ Yüzügüllü, Özal. "İstanbul Otoyol Köprü ve Viyadüklerinin Deprem Performanslarının Değerlendirilmesi" (in Turkish). IMO Istanbul (TMMOB IMO) (53). http://www.imoistanbul.org.tr/ist-bulten/sayi55/oyuzugullu.htm. Retrieved March 28, 2009. 

External links

• Istanbul road map