Construction of tunnel work between Km. 153.0 to 180.0 (Adenigarh ¨C Purunakatak) consisting of Tunnel©\T4, T5, T6 & T7 (Apx. Length of 7.492 Km) & allied works of Khurda ¨C Bolangir new rail line project in east coast railway. The estimated project cost is Rs 587.59 crore.