Consultancy Services For Preparation Of Detailed Project Report (Dpr) Including Design Of Pavement Structure In Connection With The Work Of - Widening And Strengthening Work (Existing 2 Lane Carriageway To 2 Lane With Paved Shoulder Configuration) From Km. 54.000 To Km. 111.710 Of Nh-12 (Old Nh-117) Under National Highway Division-I In The District Of South 24 Parganas, West Bengal Under Annual Plan 2026-2027.