design, supply and fixing of precast rcc box culvert size 2.00 mx 2.00 m (nhsl spcn 7.45 mtr width) incl earth wrk excvn, pcc bed and protection wrks on gomaguda-metagudem rd btwn km 0.00 to km 16.54 under 83 rcc/47 brtf project hirak in chhattisgarh
