The Otoyol 7 (O-7; English: Motorway 7), or Kuzey Marmara Otoyolu, is a toll

motorway A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway and expressway. Other similar terms ...

that bypasses

Istanbul ) , postal_code_type = Postal code , postal_code = 34000 to 34990 , area_code = +90 212 (European side) +90 216 (Asian side) , registration_plate = 34 , blank_name_sec2 = GeoTLD , blank_i ...

to the north. The motorway is 243km in length between the Kınalı junction and the Akyazı junction, and is 8 lanes wide (4+4 lanes). The completed section of highway crosses the

Bosphorus Strait The Bosporus Strait (; grc, Βόσπορος ; tr, İstanbul Boğazı 'Istanbul strait', colloquially ''Boğaz'') or Bosphorus Strait is a natural strait and an internationally significant waterway located in Istanbul in northwestern Tu ...

via the

Yavuz Sultan Selim Bridge The Yavuz Sultan Selim Bridge ( tr, Yavuz Sultan Selim Köprüsü) is a bridge for rail and motor vehicle transit over the Bosphorus strait, to the north of two existing suspension bridges in Istanbul, Turkey. It was initially named the Third Bos ...

, which was opened in August 2016. The route is intended to serve as the outermost beltway of Istanbul as well as being the third road crossing of the Bosphorus. The route stretches from ''Silivri'', on the European side, to ''Akyazı'' on the Asian side. Connections to the O-4 as well as both the

Bosphorus The Bosporus Strait (; grc, Βόσπορος ; tr, İstanbul Boğazı 'Istanbul strait', colloquially ''Boğaz'') or Bosphorus Strait is a natural strait and an internationally significant waterway located in Istanbul in northwestern Tu ...

and

Fatih Sultan Mehmet Mehmed II ( ota, محمد ثانى, translit=Meḥmed-i s̱ānī; tr, II. Mehmed, ; 30 March 14323 May 1481), commonly known as Mehmed the Conqueror ( ota, ابو الفتح, Ebū'l-fetḥ, lit=the Father of Conquest, links=no; tr, Fâtih Su ...

bridges A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually someth ...

will be built as the Northern Marmara Motorway and will bypass Istanbul to the north. Up to 2016, the only section under construction was the section from Odayeri to Paşaköy. In this section, 14 tunnels, 61 viaducts, 45 underpasses, and 63 overpasses will be constructed. The western (Silivri-Odayeri) and eastern (Kurtköy- Akyazı) sections were tendered in early May 2016. Construction was then estimated to take three years and to start in 2016.Kuzey Marmara Otoyolu ihalesi sonuçlandı
/ref> The section of motorway south of O-3 was constructed in 1987 and was listed as a connector of the O-3 until 2016. The T1 and T2 tunnels on this highway were the location for the world's longest flight through a tunnel.

Exit list

Main route

Connecting route

References

External links

3rd Bosphorus Bridge and Northern Marmara Motorway
{{Otoyols in Turkey AH1 Transport in Istanbul Province Controlled-access highways 07 Transport in Kocaeli Province Transport in Sakarya Province Akyazı District