ZiZigana Tunnel is a road tunnel project constructed over the North Anatolian Mountains along the East–Anatolia and Middle East route connected by Trabzon–Gümüşhane. It is Türkiye’s and Europe’s longest and the world’s third longest double-tube road tunnel, constructed using advanced engineering methods. Construction began in 2017 and was completed in 2023, making significant contributions to Türkiye’s economic development and regional transportation security.Innovative construction techniques and
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OiThe Yağdonduran Pass, a key transit point between Sivas and Malatya provinces, posed a major problem for drivers, especially during winter months, due to severe adverse weather conditions including heavy snow precipitation, icing, and snowstorms that caused significant disruptions to transportation. To address this issue, construction of the Yağdonduran Tunnel began in 2016 and it was opened to service in 2024. The 1567-meter-long twin-tube tunnel has been designed to provide drivers with a safe
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HaHasankeyf Tunnel was constructed to facilitate transportation between the districts of Hasankeyf and Gercüş in Batman. Opened on 8 November 2022, tunnel aims to improve transportation quality in the region by saving time and fuel savings. The tunnel addresses a critical need arising from the change in route caused by the commencement of water storage at the Ilısu Dam water road. Its opening was marked by a ceremony attended by President Recep Tayyip Erdoğan via video conference method.Project Sc
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PiIn the east of Türkiye, the Pirinkayalar Tunnel connects Erzurum with Artvin, constructed to overcome geographical challenges and enhance driving safety. Opened on 29 December 2021, tunnel lies within the boundaries of Uzundere district in Erzurum and is situated along the Erzurum–Artvin black route extending to Georgia. The tunnel aims to eliminate traffic problems caused by sharp curves and harsh winter conditions by bypassing the difficult Pirinkayalar Pass.Technical Specifications and Struct
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PhAntalya’s west section, constructed to facilitate transportation and enable more efficient operation of the Mediterranean Coast Route, was opened to service on 16 April 2022. tunnel, which strengthens the connection between Antalya—one of Türkiye’s key tourism and agricultural centers—and its Aegean and Inner Anatolia regions, is a twin-tube tunnel with a total length of 1305 meters. The opening ceremony was conducted by President Recep Tayyip Erdoğan video conference, with Transportation and In
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BoThe Bolu Mountain Pass, implemented as part of the important project, is a critical component of Türkiye’s road transport network along the Edirne – İstanbul – Ankara axis and serves national and international transportation. The Bolu Mountain Pass, with a total length of 27.1 kilometers, provides connectivity through 2x3 lane highway and 2x2 lane link roads. Tunnel has significantly alleviated transportation challenges posed by difficult geographical conditions, enhancing traffic safety and red
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CaCankurtaran Tunnel is one of Turkey’s transportation projects connecting Black Sea Region to East and the Middle East. Constructed along the Hopa-Borçka route in place and designed to enhance driver safety during particularly harsh winter conditions, this tunnel was planned by the General Directorate of Highways. With a length of 5,228 metres, Cankurtaran Tunnel is Türkiye’s second-longest twin-tube tunnel and was opened to traffic on 1 March 2018. Upon completion of the project, travel distance
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KaKarahisar Tunnel is located on a transportation axis connecting Afyonkarahisar to İzmir, Antalya and Istanbul. Constructed along the Afyonkarahisar–İzmir highway, particularly in the area known as the Özdilek ramp, the tunnel is designed as a twin-tube, two-lane structure. Construction of the project began after 2016 and was completed within a short period, opening to traffic in 2017.Technical SpecificationsLength: Each tube is 400 metres long; the total length including approach roads is 2.5 ki
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ErErkenek Tunnel is one of the transportation projects aimed at strengthening north-south connectivity in Türkiye. Constructed along the D-850 Highway between Doğanşehir district of Malatya and Gölbaşı district of Adıyaman, tunnel has created a vital transportation corridor due to heavy truck traffic and challenging winter conditions. Construction of the tunnel began in 2011 but could not be completed within the planned timeline due to ground problems and deformations; however, it was opened to se
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KıThe Kızılcahamam-Çerkeş Tunnel is a infrastructure project connecting Kızılcahamam district of Ankara with Çerkeş district of Çankırı. Tunnel is located on the Güvem-Çerkeş route between Ankara and Istanbul and aims to make the previously difficult route, due to its high altitude and challenging winter conditions, safer, more comfortable and fast. With the implementation of the project, the existing 6-kilometer route has been reduced from 6 kilometers to 3.6 kilometers thanks to the 2,071-meter-
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