O.5 (Turkey)

Otoyol 5
Otoyol 5
Gebze-Orhangazi-İzmir Otoyolu
Route information
	Part of E 881
Length	407 km (253 mi)
Existed	2016–present
Major junctions
North end	O.4 in Gebze
	O.22 in Bursa
South end	O.30 in İzmir
Location
Country	Turkey
Regions	Marmara, Aegean
Provinces	Kocaeli Province, Yalova Province, Bursa Province, Balıkesir Province, Manisa Province, İzmir Province
Major cities	Gebze, Bursa, Balıkesir, Akhisar, Turgutlu, İzmir
Highway system
	Highways in Turkey; Motorways List; ; State Highways List; ;

Otoyol 5 near Altınova exit

Otoyol 5 (English: Motorway 5), named the Gebze-Orhangazi-İzmir Motorway (Turkish: Gebze-Orhangazi-İzmir Otoyolu) and abbreviated as O-5, is a toll motorway in Turkey. Since being completed in 2019, it connects the Istanbul metropolitan area with İzmir, via Bursa and Balıkesir. The O-5 runs parallel to the D575 and the D565 for most of its length and is a major motorway in Turkey as it provides a direct connection between Istanbul and its surrounding metropolis to the country's 3rd largest (İzmir) and 4th largest (Bursa) cities, bypassing the Gulf of İzmit via the Osman Gazi Bridge. The O-5 also makes up part of the International E-road network E881.

The western part of the Bursa Beltway, which is part of the O-5, was completed during the 2000s. The rest of the O-5 has been under construction since the early 2010s, with the first portion opened from Altinova to Gemlik in April 2016. As of April 2017, the O-5 is open in two separate sections: the 105.5 km (65.6 mi) section from its northern terminus in Gebze to Bursa, across the Osman Gazi Bridge along with a 18.2 km (11.3 mi) section from Kemalpaşa to its southern terminus in İzmir. The final section, Karacabey to Akhisar, opened on August 5, 2019.

The O-5 is the most expensive toll motorway in Turkey as the price for a personal vehicle from Gebze to Izmir 147 km (91 mi), ₺ 984 (US$ 29.76), including the Osman Gazi Bridge toll of ₺ 399.00 (US$ 12.07).

Gebze-Orhangazi-İzmir Motorway Project details

The project includes the Osman Gazi Bridge, the Gebze-Bursa section and the Bursa-İzmir section of Otoyol 5. It is a build-operate-transfer project which was awarded to a consortium consisting of 5 companies (Nurol, Özaltın, Makyol, Göçay and Astaldi).

Key dates^[1]

Tender: 9 April 2009
Signing of contract: 27 September 2010
Date of effect: 15 March 2013
End of contract: 15 July 2035
Construction time: 7 years

Guaranteed traffic volumes^[1]

Gebze-Orhangazi (including bridge): 40000 PCU/day
Orhangazi-Bursa: 35000 PCU/day
Bursa-Balıkesir: 17000 PCU/day
Balıkesir-İzmir: 23000 PCU/day

Technical details^[1]

377 kilometres of motorway, 44 kilometres of connection roads
1 suspension bridge with a main span of 1,550 metres Osman Gazi Bridge
30 viaducts (18,212 metres)
3 tunnels (6,200 metres)
209 small bridges
18 toll plazas
7 service areas and 7 parking areas

Tunnels

Orhangazi Tunnel - 3,586 m (11,211 ft)
Selçukgazi Tunnel - 1,234 m (4,049 ft)
Belkahve Tunnel - ~1,700 m

Exit list

Province	District	km	mi	Exit	Destinations	Notes
Kocaeli	Gebze	0.0	0.0	K1	O.4 — Istanbul, Ankara
Gulf of İzmit		5	3.1	Osman Gazi Bridge (₺ 399.00 toll)
Yalova	Altınova	12.7	7.9	K2	D.575 — Yalova, İzmit
Yalova	Çiftlikköy	24.2	15.0	K3	Taşköprü Kılıç Rd. — Kılıç [tr]
Yalova–Bursa line	Çiftlikköy–Orhangazi line	30.9	19.2	Orhangazi Tunnel
Bursa	Orhangazi	39.5	24.5	K4	D.150 — Orhangazi, İznik
	Orhangazi	58.2	36.2	K5	D.575 — Gemlik / P.16-09 — Dırazali	Connects to D.595
	Gemlik	66.6	41.4	K6	D.575 — Gemlik
	Osmangazi	77.9	48.4	Selçukgazi Tunnel
		79.5	49.4	Ovaakça Toll Plaza
		83.8	52.1	K7	O.22 — Turanköy	East end of the Bursa Beltway
	Nilüfer\|Nilüfer, Bursa\|Nilüfer	91.7	57.0	K8	D.575 — Mudanya
		100.1	62.2	K9	Görükle connector — Görükle	Connects to D.200
		105.5	65.6	K10	D.200 — Çanakkale	West end of the Bursa Beltway
	Karacabey	107.1	66.5	Karacabey Toll Plaza
	Karacabey	142.5	88.5	K11	D.200 — Karacabey
Balıkesir	Susurluk	173.2	107.6	K12	D.565 — Susurluk
	Balıkesir	201.4	125.1	K13	D.565 — Balıkesir
	Balıkesir	230.5	143.2	K14	D.230 — Balıkesir, Edremit
	Savaştepe	262.4	163.0	K15	P.10-51 — Savaştepe
Manisa	Soma\|Soma, Manisa\|Soma	277.4	172.4	K16	P.45-04 — Soma	Connects to D.240
	Kırkağaç	299.5	186.1	K17	D.240 — Soma
	Akhisar	315.1	195.8	K18	Akhisar connector — Akhisar	Connects to D.565
	Saruhanlı	339.6	211.0	K19	D.565 — Saruhanlı
	Turgutlu	373	232	K20	D.250 — Turgutlu, Manisa
İzmir	Kemalpaşa	385	239	Sancaklı Toll Plaza
		385.6	239.6	K21	İstiklal St. — Akalan
		389.6	242.1	K22	Kemalpaşa connector — Kemalpaşa	Connects to P.35-25 and P.35-26
		393.4	244.4	K23	40th St. — Kuyucak
		396.8	246.6	K24	Necdet Bukey Ave. — İstiklal, Ulucak
	Kemalpaşa–Bornova line	399.3	248.1	Belkahve Tunnel
	Bornova	407.8	253.4	K25	Karasuluk connector — Bornova	Connects to D.300
		408.6	253.9	K9	O.30 — Menemen, Balçova	İzmir Beltway
		409.4	254.4		Kamil Tunca Blvd. — İZOTAŞ	İzmir Coach Terminal
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Tolled