The objective of this paper is to describe the responses from academic and engineering communities of Taiwan in relating to the revision on seismic design guidelines of bridge structure after the Chi-Chi earthquake. Because a lot of variable near-fault ground motion data was collected from the rupture of Chelungpu fault, seismic response of bridge structure subjected to these near-fault ground motions were examined carefully. To reflect the near-fault ground motion effect on bridge seismic design guideline with the consideration of near-fault ground motion effect was developed and implemented and two-level seismic design of bridge structure was studied and proposed. Finally, a risk assessment methodology, based on vulnerability, is also developed to assist in decisions for reducing seismic risk due to failure of bridges.
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