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 is located in Turkey
Orhangazi Tunnel
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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