Consultancy Services for Preparation of Detailed Project Report and providing pre-Construction services in respect to (a) Up gradation of existing 2L+PS of Agartala-Udaipur section to 4L+PS from Km 6.800 to Km 55.00 of NH-08 and (b) Development/ upgradation of Udaipur (NH-08) to Amarpur (Approx. length = 24 Km) in the State of Tripura on EPC basis