Construction of sub-structure of 2 nos Major Bridges i.e of Major Br. No. 460 (Span 4x45.7m) over river , at Km.283/0-2 in between station Patiladaha - Sarbhog & Major Br. No. 467 (Span 7x45.7m) over river Beki, at Km.291/0-4 in between station Sar