Abstract

This paper presents a comprehensive review of the modeling, analysis, and structural performance of steel I-girderbridges using CSI-Bridge software. By applying both Indian Roads Congress (IRC) and American Association of StateHighwayand Transportation Officials (AASHTO) standards, the study investigates bending moments, shear forces, and axial loadsacrossvarious girders and span configurations. The review illustrates that IRC loading results in higher stress values, implyingconservative design norms compared to AASHTO. The use of CSI-Bridge software proved effective for reducingmanualcalculations and increasing model accuracy. This review aims to serve as a reference for bridge design professionals andstudentsfor understanding advanced modeling tools and code-based design variations. Keywords: Steel I-Girder Bridge, CSI-Bridge Software, Composite Construction, IRC Loading, AASHTO Design