Improvement of girders surface by systematic painting from span no. 20 to 31 (1 shore span + 11 main span) of bridge no. 17 (Ganga Bridge Munger span 2 x 34 + 29 x 125 m) at Km. - 9/8 -13/02 between stations MGR-SBDP under SSE/Br./MGR in Sonpur Div