Otoyol 1

O-1
The First Beltway 1. Çevreyolu
Route information
Length	24.8 km (15.4 mi)
Existed	1973–present
Major junctions
West end	D.100, osmaniye in Bakırköy, Istanbul
East end	Bağdat Ave. in Kadıköy, Istanbul
Location
Country	Turkey
Regions	Marmara
Provinces	Istanbul Province
Major cities	Istanbul
Highway system
Highways in Turkey Motorways List State Highways List
→ O-2

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.

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

Province	District	km	mi	Exit	Destinations	Notes
Istanbul	Bakırköy	0.0	0.0	K1	Osmaniye intersection D.100-	northbound Mehmetakif cd.southbound Ekremkurt Blv.
	Zeytinburnu	2.6	1.6	K2	Topkapı intersection	northbound exit. southbound entrance
		4.4	2.7	K3	Vatan caddesi intersection	southeastbound Fatih, nourthwestbound Bayrampaşa
	Eyüpsultan	5.2	3.2	K4	Edirnekapı intersection	southeastbound Fatih
		6.1	3.8	K5	Ayvansaray intersection	southeastboun Fatih
	Golden Horn	6.5	4.0	Haliç Bridge
	Beyoğlu	7.2	4.5	K6	Halıcıoğlu intersection
	Kağıthane	8.8	5.5	K7	Okmeydanı intersection	Hasdal O-2 — Okmeydanı connector
	Şişli	10.9	6.8	K8	Çağlayan intersection	southbound Piyalepaşa Blv.
	Beşiktaş	13.8	8.6	K9	Barbaros intersection	nourthbound Büyükdere Cd.- O-2 connection path, southbound Barbaros Blv.
		15.1	9.4	K10	Balmumcu intersection	Barbaros Blv.
	Bosphorus	16.3	10.1	Bosphorus Bridge (₺24.00 toll)
	Üsküdar	18.2	11.3	K11	Beylerbeyi intersection
		19.5	12.1	K12	Altunizade intersection	eastbound Ümraniye- O-2 connection path
		21.4	13.3	K13	Çamlıca intersection	O-2, O-4 Kocaeli Province Ankara
		22.8	14.2	K14	Uzunçayır intersection	D.100 Kocaeli Province Ankara
	Kadıköy	24.8	15.4	K15	Söğütlüçeşme intersection	Bağdat Cd.
	1.000 mi = 1.609 km; 1.000 km = 0.621 mi        Tolled

See also

• List of highways in Turkey

External links

• Istanbul road map