- hurricane storm surge and riverine flood modeling
- cohesive and non-cohesive sediment scour near bridges and roadways
- soil erosion properties testing
- nearshore coastal processes assessments
- coastal roadway protection design and permitting
INTERA, a recognized leader in evaluating sediment transport and wave forces on coastal transportation infrastructure, provides expertise in modeling of hurricane storm surge propagation, sediment transport patterns near flow obstructions (e.g., piers), and wave and current forces on coastal bridges, roadways, and other structures. Notably, INTERA developed the parametric wave/surge force formulas in the American Association of State Highway and Transportation Officials (AASHTO) Guide Specifications for Bridges Vulnerable to Coastal Storms. These specifications enable the calculation of wave and surge forces on bridge superstructures and a variety of other pile-supported structures.
In support of infrastructure design projects, we have completed bridge hydraulics reports, bridge hydraulics analyses, and/or scour assessments for hundreds of individual riverine and tidal bridges across the United States. These applications have included prediction of design conditions during both hurricane storm surge events and upland riverine flooding events. INTERA has also made numerous contributions in the area of scour analysis and prediction including the development of improved equations for erosion around simple and complex structures, scour in cohesive sediments (e.g., rock, clays, and muds), and time rate of scour. Additional areas of active research include developing methods, equations, and screening criteria for determining the vulnerability of existing bridges to storm surge and wave loading, determining the input design parameters needed to compute surge and wave loading on bridges (i.e., water elevations and wave heights and periods), computing vertical and horizontal wave loads on bridge spans, and evaluating the response of bridge superstructures to this type of loading.