This report details information about what bridge inspectors should be looking for when conducting bridge security assessments and what needs to be included in a bridge security checklist to assist inspectors in their assessments. A review of the literature found a lack of information in three areas: on developing methods for identifying critical bridges for security hazards; on engineering standards and guidelines for bridge security design in order to reduce their vulnerability to attacks; and on understanding the structural response of key components of a bridge in order to mitigate bridge collapse, loss of life, and disruption of traffic. Following this review, a comprehensive security checklist was developed to provide inspectors with the ability to conduct on-site assessments of bridge security. The checklist is tablet pc-based and is in an easy to use drop-down format. The checklist was not included in this report. The report details the main objectives of this project: establish security hazard levels and performance objectives for NJ bridges; identify critical components in a typical ridge that are vulnerable to blast and impact loads; develop a simple bridge security checklist to perform on-site assessment of bridge components based on the results of the first two tasks; and develop a tablet pc-based program to utilize the security checklist. Tables, figures, and references