Construction Of Single Vent 1*2.00M (Clear) Length, 2.50M (Clear) Height & 10.3M Width Rcc Box-Culvert For Drainage Of Storage Water At Ch: 2+350M Of Wapda More (Magura)-Langalbandh-Shailkupa-Saikpara (Jhenaidah) Road (R-716) Under Road Divisi...