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 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 |
| 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
References
- "Gültepe ve Korutepe Tünelleri yenileniyor". Çağdaş Kocaeli (in Turkish). 2013-12-25. Retrieved 2014-09-07.
- "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 Archived 2012-12-22 at archive.today at General Directorate of Highways (Turkey) (KGM)
| Road tunnels |
|  |
|---|---|---|
| Railway tunnels | ||
| Road-rail tunnels | ||
| Water tunnels |
| |
| Historical tunnels | ||
Tunnels in italic are under construction | ||
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