Providing And Laying Bm For Correction Layer And 40mm Thick Bitumen Concrete, Road Marking, Cat Eyes, Delineator In Km 173/900 To 179/600, Total Length Is 6.100 Km. Annual Repair And Maintenance Of Nh-154 I.e. Old Nh-21, Chandigarh Mandi Manali Road Between Km 173/900 To 179/600.