Improvement and Widening to two lane with Paved Shoulder of NH-13 & 15 (Old NH-52) from Existing Km 745.60 (Design Km 0.000) to Existing km 770.600 (Design Km 24.819) (Brahmakund T-junction to Kamlang T-Junction, Existing Length: 25.00 Km, Design Length: 24.819 Km, Pkg-01) in the state of Arunachal Pradesh on EPC mode