ABSTRACT
S.R. Duwadi Federal Highway Administration, McLean, Virginia, USA
ABSTRACT
Incorporating robustness and resiliency into highway infrastructure design has evolved over time through lessons learned from each hazard event. As a result of hurricanes, earthquakes, flooding and scour there have been a greater understanding of the impact of these on the infrastructure and its vulnerability. Solutions have been developed over years through research and development effort, although there are still challenges that remain. The understanding & designing for security however is relatively new, and therefore multitude of challenges lay ahead. Unlike natural hazards where effort has been spent over decades to understand behavior, effort to understand behavior of structures to explosive loadings or other security risks is relatively new and still evolving. The importance of recognizing and defining vulnerabilities to each hazard event is critical for developing solutions to keep these structures functional after any event. This paper will discuss the importance of recognizing vulnerabilities of highway bridges to natural and manmade hazards and present a summary of solutions that have been developed to mitigate these hazards.
