Under the sponsorship of the U.S. Federal Highway Administration, the Multidisciplinary Center for Earthquake Engineering Research is developing a set of guidelines for conducting seismic hazard evaluations and retrofitting of complete highway systems. These guidelines will provide assistance in performing seismic vulnerability screening, evaluation and retrofitting of all major highway system structural components (bridges, retaining structures, slopes, tunnels, culverts, and pavements) and in determining the impacts of scenario earthquakes on highway system performance (traffic flows, economic consequences, etc.). The guidelines will be contained in the 3-volume "Seismic Retrofitting Manuals for Highway Systems," in which Volume I will contain procedures for conducting a seismic risk assessment of highway systems and regional networks, Volume II will contain procedures for seismic screening, evaluation and retrofitting of highway bridges, and Volume III will contain similar procedures for retaining structures, slopes, tunnels, culverts and pavements.

This presentation will provide an overview of the coverage for each of the three volumes. In addition, it will present an example application of the seismic risk analysis methodology and it discusses advancements being incorporated into the procedures for seismic screening, evaluation, and retrofitting of highway bridges (Volume II).

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