İstanbul- Şile - Ağva Road is building 558,25 km road construction consisting of 33x2 lanes in total in the section between 16.500 - 26.950 and 37.000 - 84.800 kilometers. The project involves building of 66.870 m viaduct, 55.970 m NNATM tunnel, 15 crossover roads, soil works, engineering structures and bituminous surface treatment works.
