Orhangazi Tunnel

The Orhangazi Tunnel (Turkish: Orhangazi Tüneli), is a motorway tunnel located at Samanlı Mountains in Marmara Region as part of the Istanbul-Bursa Motorway O-5 in Turkey.[1]

Orhangazi Tunnel
Orhangazi Tüneli
Overview
LocationOrhangazi, Bursa Province – Yalova Province
Coordinates40°33′57″N 29°21′19″E
StatusOpen
Route O-5
Operation
Work begun15 February 2012
ConstructedOtoyol A.Ş.
Opened21 April 2016 (2016-04-21)
OwnerGeneral Directorate of Highways
Trafficautomotive
CharacterTwin-tube motorway tunnel
Technical
Length3,586 and 3,591 m (11,765 and 11,781 ft)
No. of lanes2 x 3
Orhangazi Tunnel
Location of Orhangazi Tunnel in Turkey

Situated northeast of Orhangazi town between Laladere and Yeniköy villages on the province border of Yalova and Bursa,[2] it is a twin-tube tunnel of length 3,586 and 3,591 m (11,765 and 11,781 ft) carrying three lanes of traffic in each direction. The construction works began on 15 February 2012,[2] and are being carried out by Otoyol A.Ş., a consortium of Turkish Nurol, Özaltın, Makyol, Yüksel, Göçay and Italian Astaldi companies.[3] The New Austrian Tunnelling method (NATM) was applied for the boring of the tunnel.[4][5]

Breakthrough in one of the tubes was achieved on 19 February 2014 after two years and four days of work. A related ceremony was held at site in presence of Deputy Prime Minister Bülent Arınç and Minister of Transport, Maritime and Communication Lütfi Elvan on 3 March 2014.[5] It is the longest motorway tunnel of Turkey.[1][3][6] The tunnel's opening to traffic was in April 2016.

Other tunnels on the route are the 1,192 and 1,303 m (3,911 and 4,275 ft)-long Selçukgazi Tunnel and the 1,556 and 1,653 m (5,105 and 5,423 ft)-long Belkahve Tunnel.

See also

References
  1. "Türkiye'nin en uzun tüneli yarın açılacak". Sabah (in Turkish). 2014-03-02. Retrieved 2014-04-17.
  2. Alatürk, Ensar Tuna (2013-07-03). "Bu tünel İstanbul-İzmir arasını 3 saate düşürecek". Zaman (in Turkish). Archived from the original on 2014-04-19. Retrieved 2014-04-17.
  3. "Türkiye'nin en uzun tünelinde son durum". Ajans Orhangazi (in Turkish). Retrieved 2014-04-17.
  4. "Samanlı Tüneli / Samanlı Tunnel Km: 30+700 – 34+350". Otoyol A.Ş. Retrieved 2014-04-17.
  5. "Samanlı Tüneli Sağ Tüp Kazısı Tamamlandı" (in Turkish). Otoyol A.Ş. 2014-03-03. Retrieved 2014-04-17.
  6. "Türkiye'nin en uzun tüneli açılıyor". Habertürk (in Turkish). 2014-03-02. Retrieved 2014-04-17.


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