Korutepe Tunnel

The Korutepe Tunnel (Turkish: Korutepe Tüneli), is a motorway tunnel constructed on the Istanbul–Ankara motorway O-4 E80 in Kocaeli Province, northwestern Turkey.

Korutepe Tunnel
Korutepe Tüneli

Korutepe Tunnel eastbound O-4.
Overview
Location	Korutepe, İzmit, Kocaeli, Turkey
Coordinates	40°46′36″N 29°53′38″E Korutepe Tunnel Location of Korutepe Tunnel in Turkey
Status	Operational
Route	O-4 E80
Operation
Opened	1984 (1984)
Operator	General Directorate of Highways
Traffic	automotive
Vehicles per day	ca. 55,000
Technical
Length	1,028–1,088 m (3,373–3,570 ft)
No. of lanes	2 x 2
Operating speed	80 km/h (50 mph)

It is situated on the Korutepe Hill west of İzmit. The 1,028–1,088-metre (3,373–3,570 ft) long twin-tube tunnel carries two lanes of traffic in each direction. The Gültepe Tunnel follows it in the west direction.

The tunnel was constructed in the 1980s. During the 1999 İzmit earthquake, the tunnel was light damaged.[1] In 2012, the tunnel's both tubes were reinforced.[2] In the time period of 2013–2014, the tunnel was modernized for traffic safety. Around 55,000 vehicles pass through the tunnel in both directions daily.[1]

See also

• List of motorway tunnels in Turkey

References

1. "Gültepe ve Korutepe Tünelleri yenileniyor". Çağdaş Kocaeli (in Turkish). 2013-12-25. Retrieved 2014-09-07.
2. "Karayollarında yol yapımı ve onarım devam ediyor". Risale Haber (in Turkish). 2012-05-15. Retrieved 2014-09-07.

External links

• Map of road tunnels in Turkey at General Directorate of Highways (Turkey) (KGM)