The percentage of air voids in this study was shown to be 4.020 percent and 4.507 percent by VG-30 and VG-40 respectively, which was noticeable in the change between the two binders grades. Stability values of Marshall of VG-40 were always higher than VG-30 despite the fact that both grades showed a similar value of optimum binder content (OBC) of 4.25%. It is interesting to note that VG-40 has reached its optimum stability at a 4.50% bitumen threshold and is better at that mark than VG-30. It was found that stability increased alongside binder content and then started to decrease. When investigating the ideal proportions of binders, the Marshall Mix Design Method of dense bituminous macadam (DBM-I) was used. The paving bitumen of two grades, VG-30 and VG-40, was assessed with respect to its performance functionalities and mix behavior under a heavily loaded media. This was intended to determine the grade that was more resistant and durable. In India, significant highways are commonly built with Dense Bituminous Macadam (DBM) or Bitumen Concrete (BC) with mix of bitumen generally prepared on Marshall method- which is a compromise method which on one hand balances aggregate size gradation and on the other hand the quantity of bitumen. Considering that road infrastructure is the back-bone of transportation and it has a direct impact on the economic might of a nation, the VG upgrading of road infrastructure with higher-performance bitumen grades such as VG-40, would have the potential to ensure road sustainability and endurance of the weight it carries. The Pavement performance was analysed using IIT Pave Software, it was observed that the fatigue and rutting life for VG-30

30.92 msa& 1719.62 msa and VG-40 38.42 msa &2596.96 msa, respectively. Further, a detailed comparative cost analysis was carried out with both bitumen gradeVG-30 and VG-40.It was observed that total construction/cost for VG- 30 2,08,001 Rupees whereas the total cost for VG-40 2,09,876 Rupees respectively. It indicated that there was a very lesser difference in cost with both type of bitumen grades. As per (IRC: 37-2002) It was focused that grade bitumen has more stability for Indian climate and traffic conditions. Therefore, the VG-40 grade can be used instead of VG-30 under homogeneous traffic flow conditions.