The majority of highway bridges are girder type structures, either single spans or continuous spans. Determining the
principal effects of the various loading combinations can often be achieved with a 2-dimensional analytical model but for overall
absolute analysis which is actually more complicated a 3-dimensional model is needed. This paper elaborates the correct analysis
and modelling techniques for typical prestressed concrete bridge deck girder by using grillage analysis. The structural model is
developed as per FE discretization in Staad Pro software. For the purpose of analysis, dead load (self- weight, wearing coat,
super imposed dead load, footpath live load) and vehicular live loads are considered as per IRC: 6-2016. A series of applications
are executed in order to verify the efficiency and the accuracy. Linear static analysis is carried and the design values of bending
moment and shear force for the class A 70 R tracked vehicle are computed.
