Slope stability is the potential of soil slopes to withstand and not undergo any movement. Natural processes can cause areas to become unstable, such as weathering, forest fires, and the timberline moving lower. There are ways in geotechnical engineering to stabilize these unstable slopes or to reinforce the new or existing unstable slopes. The most economic and quick solution is to reinforce the slope with slender steel bars, known as soil nail, and the technique is known as soil nailing. Soil nails are reinforcing, passive slender elements (normally steel reinforcing bars) that are drilled sub-horizontally in the ground to support excavations in soil, or in soft and weathered rock that contribute to the stability of earth-resisting systems. These measures are brought to accommodate additional land near any soil dumps which adds an extra traffic lane to the existing highway. The stability of these reinforced slopes needs to be assessed. In this study, stability of slope reinforced with soil nails is determined with the help of numerical computation softwares altering the reinforcement in the slope. Factor of safety for all such trials are recorded, and the best is found.