consultancy services for preparation of detailed project report for construction of sluice / grill / drop gate for culverts (106 nos.) and bridges (6 nos. i/c. 1 bridge of 4 spans) from gin-105 to gin-255 having bp no. 243/9-s to 790/7-s in the west bengal along indo bangladesh border (ibb). sh: package-iii-consultanancy services for preparation of detailed project report for construction of sluice / grill / drop gate or culverts (24 nos.) from gin-214 to gin-255 having bp no. 417/8-s to 794/3-s in the district of uttar dinajpur , darjeeling and jalpaiguri in state of west bengal along indo bangladesh border border (ibb)