Abstract
Under the sponsorship of the U.S. Federal Highway Administration, the National Center for Earthquake Engineering Research is developing a set of guidelines for conducting seismic hazard evaluations and retrofitting of complete highway systems. These guidelines 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 are contained in the 3-volume “Seismic Retrofitting Manuals for Highway Systems,” in which volume I contains procedures for conducting a seismic risk assessment of highway systems and regional networks, volume II contains procedures for seismic screening, evaluation and retrofitting of highway bridges, and volume III contains similar procedures for retaining structures, slopes, tunnels, culverts and pavements.
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