Definition and Background

Bridge vehicular and non-vehicular emergencies create significant threats to public safety and highway infrastructure. Vehicular impact events include over-height impacts, column and rail impacts, and deck punch-through incidents. Non-vehicular emergencies include, but are not limited to, flooding, fires, and slope failures. These events result in serious damage to bridges and cause traffic congestion due to travel lane restrictions. Similarly, Critical Findings from bridge inspections can result in full or partial closures that significantly affect traffic. Any impact or other emergency to a bridge resulting in traffic restrictions expected to last longer than 4 hours is considered a reportable incident and must be reported. It is imperative that the proper response and notification procedure be implemented, in order to communicate bridge emergencies in a way that is both uniform and effective. An effective response procedure will quickly inform authorities of these events, help restore traffic restrictions to normal conditions, and expedite the rehabilitation of bridge structures.