143 km double line 250 km/hr high-speed railway between Yerköy - Sivas section of Ankara - Sivas Railway. Supervision includes 9 tunnels with total length 14,5 km, 9 viaducts with total length 4,6 km, 30 overpasses, 52 underpasses, 209 culverts. Soil Improvements, Engineering Structures, Material Approvals and Progress Payment Control,

13,3 km long double track "3rd rail" underground metro between 4. Levent - Ayazağa with a design speed of 80 km/hr. Supervision includes 3 cut and cover metro stations, excavation of a single-tube mainline tunnel in total length 9832 meters, a single-tube station platform tunnel in total length 1295 meters,