The study explores the impact of reclaimed asphalt pavement (RAP) and steel slag on the Marshall parameters and fatigue behavior of bituminous concrete grade-1 mix. The study aims to determine the feasibility of utilizing these materials as sustainable alternatives in road construction. The research involves laboratory testing of bituminous concrete mixtures containing 5% steel slag and 10% RAP. The Marshall parameters, which evaluate the compatibility and mechanical properties of the mix, are assessed. Additionally, the fatigue behavior of the mixtures is analyzed to understand their resistance to repetitive loading. The results reveal that incorporating 5% steel slag and 10% RAP in the bituminous concrete grade-1 mix positively affects the Marshall parameters and fatigue behavior, indicating their potential as viable materials for improving the performance and sustainability of bituminous concrete grade-1 mix.