This study focuses on making bridges more aerodynamically efficient by optimizing their designs. When engineers design bridges, they need to make sure they can withstand the wind. Nowadays, instead of relying solely on physical wind tunnel tests, engineers use computer simulations called Computational Fluid Dynamics (CFD) to analyze how wind flows around bridge shapes. We built upon previous research by [2] who developed a systematic way to use CFD for studying bridge aerodynamics. In our study, we used a software ANSYS Fluent to simulate wind flow around different bridge cross-section shapes like trapezoidal and T-sections, in addition to the traditional G1 geometry. Another work which we co-related was from [10]. By analyzing the forces generated by the wind on these shapes, we aimed to improve their aerodynamic performance. Some bridge shapes, especially those with more bulk, experience separated flows and instability when wind hits them. This leads to higher drag forces. Our goal was to design a model that reduces these issues. We set specific dimensions for our computer simulations and used a method called K-w SST model to accurately capture the airflow close to the bridge surfaces. To ensure the accuracy of our simulations, we tested different levels of mesh refinement. By comparing the results, we could be confident in the reliability of our CFD simulations. Based on these results and considering the shortcomings of existing models, we proposed optimizations for various bridge designs. Our study offers a dependable and effective method for improving the aerodynamic performance of bridge cross-sections, potentially leading to safer and more efficient bridge designs.