Digital Topographical Survey Work At Ch:0+000 To 21+000 Km Of Palashbari-Gaibnadha Road (R-555) & At Proposed Sadullapur Bazar Bypass Road (Ch: 0+000 To 3+500Km ) Of Gaibandha-Sadullapur Road (Z-5553) Under Road Division Gaibandha During The Year 2025-2026.