The reinforced concrete and prestressed concrete highway bridges are found to deteriorate due to a number of reasons. This is mainly due to expansion of concrete and sagging of deck girders. This problem becomes even worse in case of relatively large span bridges due to increasing dimensions of concrete girders. Composite bridge grids composed of steel skeletal, interconnected members in two or three layers of members and top deck slab as integrated part of the bridge may be employed as an alternative to conventional bridge construction. These bridges are being used in Mexico quite efficiently and conveniently for span of approximately 50 m for last 20 years in remote and hilly areas. The steel skeleton frames may be prefabricated in a workshop, transported to the site in convenient segments, interconnected at site and launched on the already prepared substructure. Then slab formwork is supported on the same steel skeleton frame and in situ slab is cast after providing reinforcement. These bridges need considerably less quantity of concrete as the superstructure does not have heavy and deep girders. As a result of this, the chances of expansion and deterioration at joints are significantly less. The composite bridge grids can be conveniently analyzed for preliminary design by hand calculations using an analytical method developed by the principal author. The method is referred to as “girder analogy”. The final checks may be carried out by computer-based analysis based on finite element method. It is concluded that the proposed composite bridge grids will prove economical in terms of time and cost in comparison with reinforced or prestressed concrete deck girder bridges. Further, it will be relatively more durable due to less deterioration of expansion joints as amount of concrete involved in this case is significantly small.