Extensive research has been conducted on the structural behaviour of bridges under the loading conditions imposed by highways and railways. However, little attention has been given to the impact of aircraft loading on bridge structures. This study aims to address this gap by investigating the forces generated during taxiing on taxiway bridge by performing static moving load analysis with aircraft loading and compare the results with analysis of IRC highway loading on same deck to investigate the difference in behaviour of taxiway bridge with two different loading conditions. Custom aircraft model is taken for aircraft live load, and highway loading is adopted from IRC 6. The paper also compares general specifications of highway bridges with that of taxiway bridges. The analysis is performed for spans ranging from 5 to 35 m. To facilitate the analysis, a traditional 2D grillage model is employed. A single span simply supported composite steel I-girder bridge is modelled as per IRC 22 code requirements and incorporates steel I-girders, along with intermediate cross-bracings, dummy beams, and bearings. The analysis is performed using Midas civil software. Results of the analysis illustrate that aircraft loading shows sudden increment and decrement of forces whereas highway loading shows gradual increment and decrement of forces with increment of span length. The forces produced by aircraft loading show a downward trend after 25 m span length, whereas highway loading shows a continuous increment with increasing span. For highway bridges, forces are mainly influenced by gross weight unlike concentrated loads in case of taxiway bridges. These findings not only enhance our understanding of the structural response to these unique loading conditions but also pave the way for the design of taxiway bridge capable of accommodating the demands of modern airport operations.