Kayaş – Kırıkkale & Polatlı Afyonkarahisar Safety Tunnels
The General Directorate of Turkish State Railways’ Department of Railroad Construction issued a tender for the construction of Kayaş-Kırıkkale and Polatlı-Afyonkarahisar Safety Tunnels . The contract covers two 30 meter-long vertical exits and 9.2 kilometer-long tunnel work including T2 Safety Tunnel (155 m), T8 Safety Tunnel (282 m), T11 Safety Tunnel (425 m), T15 Safety Tunnel-1 (1.655 m), T15 Safety Tunnel-2 (816 m), T15 Safety Tunnel-3 (488 m), and T16 Safety Tunnel (280 m) at the Kayaş-Kırıkkale section and T5-6-7-8 Safety Tunnels (5,051 m) at the Polatlı-Afyonkarahisar section.
