To ensure structural safety in seismically active areas, it is essential to assess the potential for liquefaction. To assess the possibility of liquefaction potential for a bridge project site located at Koyalajan Kamla River in Rasalpur and Koyalajan Road at Block Biraul, Bihar, an analysis was done to determine the soil liquefaction. The site falls within the most vulnerable seismic zone (zone V) and has experienced a significant earthquake measuring 7.5 on the magnitude scale with peak ground acceleration (PGA) of 0.36. Groundwater was found near the surface. Two boreholes, each drilled to a depth of 50 m, were used to evaluate site-specific conditions and the likelihood of liquefaction. The Standard Penetration Test (SPT), which measures the N-value (number of blows required to achieve a specific penetration depth) and percentage of fines in conjunction with other factors was used to analyze the soil’s susceptibility to liquefaction. The analysis was carried out as per IS 1893-2016, Annexure-F, procedure for liquefaction potential. The soil investigation report indicated that the site mainly consists of poorly graded silty sand with medium to very dense characteristics (SM). Given the significant foundation load, a well foundation was deemed necessary, and based on the soil’s engineering properties, the gross allowable load-bearing pressure at the well tip for bridge abutments and piers was recommended in the range from 85 to 90 T/m2. The study’s methodology highlighted the importance of being cautious and attentive since the analysis indicated that liquefaction is likely to occur up to 11 m depth from the ground level.