The application of spheroidal graphite cast iron to a bridge deck slab is explored. The deck slab is expected to have a good seismic resistance with little possibility of fatigue crack occurrence. Through a casting process, the spheroidal graphite cast iron deck slab was produced. Various material properties were tested and satisfactory results were obtained. The slab was then loaded statically. In order to ascertain the plastic deformation capacity, a large load of 941kN was applied to the deck slab. A static load-displacement curve of the deck slab was obtained. Furthermore, magnetic particle testing was carried out. There were no micro cracks. In addition, the results of the static load test were in good agreement with the results of the FEM analysis.
