The hollow composite slab bridges are investigated to confirm the struc tural characteristics, especially in applying to the skew bridge with the skew angle of 30 degree. As the results of static rupture bending tests and finite element analysis, it is clarified that (1)this skew bridge has enough ultimate strength in comparison with the estimation of AASHTO, (2)the rubber bearing contributes to average the distribution of the reactive force and the deflection on the support line. Moreover, this paper proposes the rational skew span on basis of the investigation and introduces the examples of application to real bridges.
