An Attack-Fault Tree Analysis of a Movable Railroad Bridge

Abstract

Mechanical and electrical components of movable bridges are engineered to move heavy concrete and steel structures in order to allow water traffic and rail and/or vehicular traffic to pass many times a day despite harsh weather conditions, storm surges and earthquakes. The bridge spans must also support varying rail and/or vehicular traffic loads.This chapter considers known and theoretical risks posed by movable bridge system attacks and faults in a single stochastic model based on attack-fault trees. Risks associated with railroad swing bridges are presented, along with the attack-fault tree model and the analysis results.