Otoyol 4

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O-4
Otoyol 4
Anadolu Otoyolu
Route information
Part of
Length: 372 km (231 mi)
Existed: 1984 – present
Major junctions
West end: , 34-12 in Istanbul
 
East end: in Ankara
Location
Regions: Marmara, Black Sea, Central Anatolia
Provinces: Istanbul, Kocaeli, Sakarya, Düzce, Bolu, Ankara
Major cities: Istanbul, Izmit, Bolu, Ankara
Highway system
Motorways in Turkey
List
Çamlıca Toll plaza on the east end of Otoyol 4 in Istanbul.

Otoyol 4 (English: Motorway 4), named Anatolian Motorway (Turkish: Anadolu Otoyolu) and abbreviated as O-4, is a toll motorway connecting the northeastern Marmara Region to the Central Anatolia Region in Turkey. It runs parallel to the D.100 for more than half of its length and then parallels the D750 for most of the eastern half. The O-4 is a major expressway in Turkey as it connects eastern Istanbul and the heavily urbanized northeastern shore of the Sea of Marmara to the nation's capital, Ankara. The O-4 also makes up part of the International E-road network E80 and E89 as well as the AH-1 of the Asian Highway Network.

The O-4 is the longest completed motorway in Turkey spanning 379 km (235 mi), just 14 km (8.7 mi) longer than the O-52. The partially-opened O-5 is expected to surpass the length of the O-4, when it is completed in 2019, with a total length of 407 km (253 mi). Construction of the O-4 began in 1984 and was widely completed in 1992 except for a short gap through the mountains west of Bolu. This gap was connected in 2006, with the opening of the Mount Bolu Tunnel.

Route description

Istanbul

The O-4 begins at the intersection with the O-2 and the O1-O2 connector in northern Ataşehir in Istanbul.[1] After the motorway crosses Necip Fazıl Boulevard, the last toll-free exit in Istanbul (K1), the O-4 becomes a toll-motorway at the Çamlıca toll booths. The first tolled exit is exit K2, which is the Samandıra-Kartal connector, that is the first of several connections to the D-100.[2] Exit K3 connects to Fatih Boulevard in Sultanbeyi.[3] The future interchange with the O-6, currently under-construction, is located just as the O-4 enters the district of Pendik. Exit K4 is located right on the eastern border of the Pendik district and connects to the Sabiha Gökçen Airport.[4] After exit K4, the O-4 enters the last district in Istanbul, Tuzla. Exit K5 (Orhanlı junction) also offers a connection to the Sabiha Gökçen airport as well as the Kurtköy-Pendik connector.[5] The O-4 continues through northern Tuzla, passing through mostly industrial parks until leaving the Istanbul Province and entering the Kocaeli Province.

Kocaeli

After crossing into Kocaeli, exit K6 is the Şekerpınar-Çayırova connector in Şekerpınar.[6] The O-4 traverses through northern Gebze until exit K7, which is a direct connection to the D-100.[7] After crossing over the D-100, the O-4 interchanges with the northern end of the O-5 at the unnumbered Mualimköy junction.[8] Following the junction, the motorway runs along the heavily industrialized northern shore of the Izmit Bay with exits at Diliskelisi (K8)[9] and Hereke (K9, K10).[10][11] Between Hereke and Körfez the motorway runs directly next to the D-100 and the Istanbul-Ankara railway along the shoreline until the motorway enters Körfez. Once in the city, Exit K11 connects to the D.100.[12] Shortly after K11, an unmarked exit to a KGM employee housing facility.[13] The exit is not open to public traffic although cars may use the overpass to make a U-turn. After passing a service area, the O-4 enters the city of İzmit. Exit K12 connects to the D.100 but only for traffic from/to Istanbul. The route then heads north and travels around the hilly northern perimeter of the city, passing through two tunnels and a viaduct. The O-4 crosses over the D.605, which can be accessed via Exit K12.[14] After bypassing Izmit, the motorway heads southeast, crossing over the D.100 (Exit K13[15]) in Bahçelievler. After the exit, the route enters Sakarya Province.

Sakarya

Otoyol 4 parallels the Istanbul-Ankara railway along the southern shore of Lake Sapanca except for its short bypass around the town of Sapanca. Exit K14 connects to the town, via İzmit Avenue.[16]

Route list

Province km Exit No. Destinations Notes
Istanbul 0 0 K9 Anadolu Otoyolu Feeders to and D-100
3.3 3.3 K1 IMES (Also serves to Küçükbakkalköy and Dudullu)
Çamlıca Toll Plaza
Parking area
4.6 7.9 K2 Samandıra (Also serves to Sarıgazi, Sultanbeyli, Yakacık, Soğanlık and Kartal) Feeder to D-100
5.5 12.6 K3 Sultanbeyli
12.1 20.0 K4 Kurtköy 1 (Also serves to Sultanbeyli, Pendik and Orhanlı) Sabiha Gökçen Int'l Airport
Feeder to D-100
Service area
Viaport Shopping Center
1.6 21.6 K5 Otoyol Havaalanı (Also serves to Orhanlı and Kurtköy) Sabiha Gökçen Int'l Airport
Kocaeli 8.0 29.6 K6 Şekerpınar 1 (Also serves to Orhanlı, Çayırova and Tuzla) Feeder to D-100
Parking area
10.2 39.8 K7 Gebze East Feeder to D-100
6.2 46.0 K8 Diliskelesi Feeder to D-100
Diliskelesi Tunnel
Parking area (westbound only)
6.1 52.1 K9 Hereke West 1 Feeder to D-100
Hereke Tunnel
2.4 54.5 K10 Hereke East 1 Feeder to D-100
Viaduct Çenedere
13.4 67.9 K11 Körfez 1 (Also serves to Derince) Feeder to D-100
Service area
7.2 75.1 K12 İzmit West 1 (Also serves to Yalova and Bursa) Feeder to D-100
Viaduct Çamlıdere
Viaduct Kopantepe
Parking area (eastbound only)
Viaduct Danış Koper
Korutepe Tunnel
Viaduct Mustafa İnan
Gültepe Tunnel
Viaduct Yenidoğan
Parking area
11.7 86.8 K13 Kandıra 1 (Also serves to Gölcük) Feeder to D-100
7.4 94.2 K14 İzmit East 1 (Also serves to Kartepe) Feeder to D-100
Service area
Sakarya 7.3 101.5 K14 Sapanca 1 (Also serves to Arifiye)
Parking area
12.6 114.1 K15 Adapazarı 1 (Also serves to Bilecik) D-650 D-100
Parking area
16.7 130.8 K16 Akyazı 1 (Also serves to Mudurnu) D-140
Service area
Parkshop Outlet Center
13.6 137.4 K17 Hendek 1
Parking area
Düzce Viaduct Gümüşova
31.6 169.0 K18 Düzce (Also serves to Gölyaka and Akçakoca) Feeder to D-100

Bridge Küçük Melen Creek
Service area
20.8 189.8 K19 Kaynaşlı D-100
Viaduct No.1
Bolu Viaduct No.2
Viaduct No.3
Viaduct No.4
2.9 km (1.8 mi) Mount Bolu Tunnel
11.1 200.9 K20 Abant (Also serves to Mudurnu and Göynük) D-100
Viaduct Abant-1
Viaduct Abant-2
7.0 207.9 K21 Bolu West D-100
Parking area
19.2 227.1 K22 Çaydurt (Also serves to Mengen, Devrek and Zonguldak) D-100
Parking area
22.5 249.6 K23 Yeniçağa D-100
Service area
Metro
9.9 259.5 K24 Dörtdivan D-100
6.7 266.2 K25 Gerede (Also serves to Karabük and Amasya) D-100 D-750
Viaduct Asım Çavuşoğlu
Service area
Dorukkaya
Ankara Parking area
45.1 311.1 K26 Çamlıdere
Parking area
15.8 326.9 K27 Kızılcahamam
Service area
Moil
Toll plaza Akıncılar
44.8 371.7 K1 Ankara

References

  1. ↑ Google (25 July 2017). "Ataşehir interchange" (Map). Google Maps. Google. Retrieved 25 July 2017.
  2. ↑ Google (25 July 2017). "Exit K2" (Map). Google Maps. Google. Retrieved 25 July 2017.
  3. ↑ Google (25 July 2017). "Exit K3" (Map). Google Maps. Google. Retrieved 25 July 2017.
  4. ↑ Google (25 July 2017). "Exit K4" (Map). Google Maps. Google. Retrieved 25 July 2017.
  5. ↑ Google (25 July 2017). "Exit K5" (Map). Google Maps. Google. Retrieved 25 July 2017.
  6. ↑ Google (25 July 2017). "Exit K6" (Map). Google Maps. Google. Retrieved 25 July 2017.
  7. ↑ Google (25 July 2017). "Exit K7" (Map). Google Maps. Google. Retrieved 25 July 2017.
  8. ↑ Google (25 July 2017). "Mualimköy interchange" (Map). Google Maps. Google. Retrieved 25 July 2017.
  9. ↑ Google (25 July 2017). "Exit K8" (Map). Google Maps. Google. Retrieved 25 July 2017.
  10. ↑ Google (25 July 2017). "Exit K9" (Map). Google Maps. Google. Retrieved 25 July 2017.
  11. ↑ Google (25 July 2017). "Exit K10" (Map). Google Maps. Google. Retrieved 25 July 2017.
  12. ↑ Google (25 July 2017). "Exit K11" (Map). Google Maps. Google. Retrieved 25 July 2017.
  13. ↑ Google (25 July 2017). "KGM unmarked exit" (Map). Google Maps. Google. Retrieved 25 July 2017.
  14. ↑ Google (25 July 2017). "Exit K12" (Map). Google Maps. Google. Retrieved 25 July 2017.
  15. ↑ Google (25 July 2017). "Exit K13" (Map). Google Maps. Google. Retrieved 25 July 2017.
  16. ↑ Google (25 July 2017). "Exit K14" (Map). Google Maps. Google. Retrieved 25 July 2017.


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