Consultancy Services as Authority’s Engineer for Supervision during O&M period for “(i) 1000 m length Viaduct at Rangpo between Km 51.10 to Km 53.90 on Sevoke-Gangtok Road, NH-10 (Old NH-31A) in the State of West Bengal/Sikkim (ii) 2-lane with paved shoulder road from km 0.000 to km 26.706 in Rhenock-Rorathang-Pakyong of NH 717-A in the state of Sikkim (iii) Two Lane “Chisopani Traffic Tunnel” of length 250m including approaches from Km 67.080 – Km 67+500 on NH-10 in East District of Sikkim (iv) 2-lane with paved shoulders road from km 0.00 to km 16.00 (Singtam-Tarku) of NH-510 in the State of Sikkim (Package-I) & (v) 2-lane with paved shoulders road from km 16.00 to km 32.50 (Tarku-Ravangla) of NH-510 in the State of Sikkim (Package-II)\\\" on EPC Basis