Gültepe Tunnel

40°46′32″N 29°54′30″E / 40.77556°N 29.90833°E / 40.77556; 29.90833

Gültepe Tunnel

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Location of Gültepe Tunnel in Turkey

StatusOperationalRoute

O-4

E80OperationOpened1984; 40 years ago (1984)OperatorGeneral Directorate of HighwaysTrafficautomotiveVehicles per dayca. 55,000TechnicalLength639–584 m (2,096–1,916 ft)No. of lanes2 x 2Operating speed80 km/h (50 mph)

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.

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]

References

^ ^a ^b "Gültepe ve Korutepe Tünelleri yenileniyor". Çağdaş Kocaeli (in Turkish). 2013-12-25. Retrieved 2016-08-13.
^ "Karayollarında yol yapımı ve onarım devam ediyor". Haber7.com (in Turkish). 2012-05-15. Retrieved 2016-08-13.