In this paper, response of the three-dimensional multi-span rigid frame bridges against for the Hyogo-ken Nanbu earthquakes, a TYPE ll seismic acceleration, will be described. The bridges including seven steel piers were fully modeled by finite element model so that the interaction of the movement of each piers and elastic plastic response are able to take into account. The result shows that the relative displacement of the border of two sections is small enough compare to “Se”, overlapped length of a girder at a support and suspended joint. It was confirmed that the bridges will not be catastrophically damaged against for the TYPE ll seismic.
