CONSTRUCTION OF RCC CULVERT 2 MTR SPAN WITH WATER CHUTE ABUTMENTS FOR BAILEY BRIDGES CARRYING OUT SURFACING WORKS FIXING OF ROAD FURNITURE BETWEEN KM 27 TO 58 ON ROAD SAMRANG-JOMOTSANGKHA UNDER 64 RCC UNDER 19 BRTF OF PROJECT DANTAK INSIDE BHUTAN (投標 №84709973cn)