Bridges and culverts form important parts of a rail or road or any other type of communication network and the major part of the project of the cost of the project goes into the construction of these structures. In order to cater to high speeds and more safety requirements of the traffic, modern highways are to be straight as far as possible and this has required the provision of increasing number of skew bridges. In brief the study includes the behavior of skew slab bridges with respect to support reaction and deflection of the slab under standard IRC 70R wheeled loading. The modeling of the slab is done by using both Finite element method (FEM) and Grillage method and results are compared.