CONSTRUCTION OF SINGLE LINE BG TUNNEL T-3 (2108m) , T-5 (2170m) INCLUDING DESIGN /LAYING OF TRACK INCLUDING YARD BY EARTH WORK IN CUTTING & FILLING, MINOR BRIDGES AND OTHER ANCILLARY WORKS IN BETWEEN CH: 61+6160M TO 79+710M BETWEEN RISHIKESH AND KARANPRAYAG (125KM) IN THE STATE OF UTTARAKHAND, INDIA.”.