Gültepe Tunnel

The Gültepe Tunnel (Turkish: Gültepe Tüneli), is a motorway tunnel constructed on the Istanbul–Ankara motorway O-4 E80 in Kocaeli Province, northwestern Turkey. It was opened to traffic in 1984.

Gültepe Tunnel
Gültepe Tüneli

Gültepe Tunnel westbound O-4.
Overview
Location	Gültepe, İzmit, Kocaeli, Turkey
Coordinates	40°46′32″N 29°54′30″E Gültepe Tunnel Location of Gültepe Tunnel in Turkey
Status	Operational
Route	O-4 E80
Operation
Opened	1984; 41 years ago (1984)
Operator	General Directorate of Highways
Traffic	automotive
Vehicles per day	ca. 55,000
Technical
Length	639–584 m (2,096–1,916 ft)
No. of lanes	2 x 2
Operating speed	80 km/h (50 mph)

It is situated on the Gültepe Hill west of İzmit. The 639–584-metre (2,096–1,916 ft) long twin-tube tunnel carries two lanes of traffic in each 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 2016-08-13.
2. "Karayollarında yol yapımı ve onarım devam ediyor". Haber7.com (in Turkish). 2012-05-15. Retrieved 2016-08-13.

External links

• Map of road tunnels in Turkey Archived 2012-12-22 at archive.today at General Directorate of Highways (Turkey) (KGM)