Abstract: This study summarized the comparative design and analysis of the RCC T-Beam Bridge superstructure for Different Codes i.e., Indian Road Congress (IRC) codes and American Association of State Highway Transportation Officials (AASHTO) Specification Load Combinations for varying span lengths. Several codes are used to design the bridges. IRC 21-2000 was used for designing bridges by working stress method (WSM), also IRC: 112-2011 introduced by Indian Road Congress for RCC and Pre- Stressed bridges by limit state method (LSM). Both the codes have different guidelines and procedures for the design of bridges. This study based on IRC 112-2011 (LSM) and IRC: 6- 2017 is used for load considerations. This analysis depends on the analytical modeling by Finite Element Method (FEM) in STAAD-Pro software and compares the structural parameter Bending moment, Shear Force, Deflection, and Area of Reinforcement for different girder span lengths 16M, 20M, 24M as per the IRC and AASHTO code. Class A & Class 70R consider from IRC 6-2017 and HS93 is the vehicular loading considered from AASHTO. Form the analysis understanding suitability design technique and the behavior of two-lane carriageway width of T- Beam bridge superstructure under different loading conditions and by using different code and comparing the result, conclusions will be made that up to what extent similarities between both standards.