design and construction of elevated metro viaduct for nmrp phase-2 in: i.between ch (-) 7577.056 m to ch (-) 13457.046 m of length 5.9 km in reach 2 b ii.between ch: 18218.586 m to ch: 24633.194 m of length 6.414 km in reach-3 a iii.between ch: (-) 289.668