m Antalya, Manavgat-Akseki, Karpuzçay-1 Tunnel (projected) – 2 x 3,565 m Antalya, Alanya-Gazipaşa, Kargıcak-Yeşilöz Tunnels, T1 (Kargıcak) Tunnel (projected) – 2 x 3,540 m Giresun Ring Road, Gülyalı-Keşap T13 Tunnel (projected) – 2 x 3,456 m Ardahan(Posof), Gümüşkavak Tunnel (projected) – 2 x 3,395 m İstanbul, Levazım-Akatlar Tunnel (projected) – 2 x 3,360 m Antalya, Kaş-Kalkan, Pınarbaşı Tunnel (projected) – 2 x 3,330 m Antalya(Akseki)-Konya(Seydişehir), Tınaztepe Tunnel (projected) – 2 x 3,300 m Fatsa Beltway, T3 Tunnel (projected) – 2 x 3,090 m Giresun Ring Road, Gülyalı-Keşap T20 Tunnel (projected) – 2 x 3,085 m İstanbul, Levazım-Zincirlidere Tunnel (projected) – 2 x 2,940 m Gaziantep Beltway, Dülük Tunnel (projected) – 2 x 2,900 m Balıkesir(Bigadiç)-Kütahya(Simav), Demirci-Düvertepe Tunnels, T2 Tunnel (projected) – 2 x 2,874 m Trabzon(Çaykara)-Bayburt(Aydıntepe), Karaçam Tunnel (projected) 2 x 2,870 m Bolu(Mudurnu)-Sakarya(Akyazı), Dokurcun (T7) Tunnel (projected) – 2 x 2,860 m Antalya, Manavgat-Akseki, Beydiğin (T1) Tunnel (projected) – 2 x 2,820 m Konya Beltway, Seydişehir-Beyşehir, T2 Tunnel (projected) – 2 x 2,500 m Giresun Ring Road, Gülyalı-Keşap T15 Tunnel (projected) – 2 x 2,426 m Giresun Ring Road, Gülyalı-Keşap T8 Tunnel (projected) – 2 x 2,405 m Hatay, Dörtyol-Hassa, Amanos T2 Tunnel (projected) – 2 x 2,238 m Giresun Ring Road, Gülyalı-Keşap T3 Tunnel (projected) – 2 x 2,164 m Trabzon(Çaykara)-Bayburt(Aydıntepe), Köknar Tunnel (projected) 2 x 1,990 m Balıkesir(Bigadiç)-Kütahya(Simav), Demirci-Düvertepe Tunnels, T4 Tunnel (projected) – 2 x 1,932 m Antalya, Kaş-Kalkan, Çağlarca Tunnel (projected) – 2 x 1,920 m Konya Beltway, Hospital-Kırankaya, T5 Tunnel (projected) – 2 x 1,910 m Giresun Ring Road, Gülyalı-Keşap T2 Tunnel (projected) – 2 x 1,865 m Ankara, Ulus Cut-Cover Tunnel (projected) – 2 x 1,860 m Giresun Ring Road, Gülyalı-Keşap T4 Tunnel (projected) – 2 x 1,749 m Antalya, Alanya-Gazipaşa, Kargıcak-Yeşilöz Tunnels, T2 (İsbatlı) Tunnel (projected) – 2 x 1,700 m Giresun Ring Road, Gülyalı-Keşap T7 Tunnel (projected) – 2 x 1,672 m Antalya, Alanya-Gazipaşa, Kargıcak-Yeşilöz Tunnels, T3 (Demirtaş) Tunnel (projected) – 2 x 1,640 m Balıkesir(Bigadiç)-Kütahya(Simav), Demirci-Düvertepe Tunnels, T1 Tunnel (projected) – 2 x 1,592 m Antalya, Demre-Kaş, T2 Tunnel (projected) – 2 x 1,590 m Giresun Ring Road, Gülyalı-Keşap T17 Tunnel (projected) – 2 x 1,575 m Hakkari-Ördekli Tunnels, T1 (projected) – 1 x 1,525 m Gümüşhane-Köse, Mount Köse Tunnel (projected) – 1 x 1,500 m Mersin(Tarsus)-Adana(Pozantı), Şehitler Tunnel (projected) – 1 x 1,500 m Balıkesir(Bigadiç)-Kütahya(Simav), Demirci-Düvertepe Tunnels, T3 Tunnel (projected) – 2 x 1,458 m Muğla, Fethiye-Dalaman, Gökçeovacık (North