Traffic automotive | Work begun 1993 Start Kaynaşlı | |
 | ||
Opened 2007; 10 years ago (2007) Length 3,014 m (9,888 ft) (east bound)3,125 m (10,253 ft) (west bound) Operator | ||
Mount bolu tunnel bolu da t neli at night the longest tunnel of turkey 3140 m 2013 11 08
Mount Bolu Tunnel (Turkish: Bolu Dağı Tüneli) is a 3.1 km (1.9 mi) long highway tunnel constructed through the Bolu Mountain in Turkey between Kaynaşlı, Düzce and Yumrukaya, Bolu.
Contents
- Mount bolu tunnel bolu da t neli at night the longest tunnel of turkey 3140 m 2013 11 08
- Map of Bolu DaC49FC4B1 TC3BCneli 14030 ElmalC4B1k KC3B6yC3BC2FBolu Merkez2FBolu Turkey
- Construction
- Opening to traffic
- References
Map of Bolu Da%C4%9F%C4%B1 T%C3%BCneli, 14030 Elmal%C4%B1k K%C3%B6y%C3%BC%2FBolu Merkez%2FBolu, Turkey
Construction
The tunnel is part of the Gümüşova-Gerede Highway within the Trans-European Motorway project, which was carried out by the Turkish Bayındır and Italian Astaldi joint venture since April 16, 1993. The total cost of the tunnel is about US$300 million. It has twin 17 m (56 ft) wide bores carrying three lanes of traffic in each direction.
The tunnel crosses the North Anatolian Fault. The November 12, 1999 Düzce earthquake (MW=7.2) caused substantial damage to the tunnel and viaducts, which were under construction at the time of the earthquake.
On September 4, 2005 the excavation of the tunnel in the Istanbul-Ankara direction was finished. The excavation for the tunnel in the Ankara-Istanbul direction was completed by the beginning of August 2005.
Opening to traffic
The Istanbul-Ankara direction (3,014 m (9,888 ft)) was opened to traffic on January 23, 2007 by the Turkish Prime Minister Recep Tayyip Erdoğan and Italian Prime Minister Romano Prodi. Four months following the initial opening, on May 7, the Ankara-Istanbul direction (3,125 m (10,253 ft)) became operational.
Speed in the tunnel is limited to 70 km/h (43 mph). Dangerous goods carriers are not permitted to use the tunnel.