| Data obtained from both damaged and undamaged bridges and hydraulic structures include:
General Information – A detailed collection of photographs of the investigated areas, information pertaining to transportation routes, and the relationship with other infrastructure.
Evidence of Type of Damage – Wind pressure, storm surge, impact damage and type of debris, and overtopping will be evaluated as possible contributors to the damage. Wind-driven wave action undoubtedly caused significant loading to these bridge structures. Debris transport and debris field mapping will be examined to distinguish whether materials that could float were transported over long distances, and tossed up against the side of the structures included in this study.
Hydraulic information – Detailed hydraulic information will include channel width and depth, evidence of high water mark, changes to hydraulics due to flood/scour, and waterborne debris fields.
Structural information – Structural assessment will include a structure description, type of superstructure - concrete or steel, whether the bridge consists of continuous or simple spans, connections to abutments and piers, response to impact damage, and present state of serviceability.
Substructure information (above waterline) – The substructure investigation will include analysis of the abutments and piers, connections to superstructure elements, and response to impact damage.
Substructure information (below waterline) – Zero visibility sonar scans will be used to conduct this portion of the investigation. Additional information that will be collected includes: loss of scour protection and the presence of debris below the waterline will be imaged and geographically located.
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