What It Means
Scour is the removal of sediment from around bridge piers and abutments by flowing water. It is the primary cause of bridge failures in the United States, responsible for approximately 60% of all bridge collapses. Scour is most dangerous during floods when water velocity increases dramatically. FHWA requires all bridges over water to have a scour assessment and a Plan of Action for scour-critical bridges.
Frequently Asked Questions
What does "Scour" mean?
Erosion of soil and rock around bridge foundations caused by water flow, a leading cause of bridge failure.
Why does Scour matter for bridge safety?
Scour is the removal of sediment from around bridge piers and abutments by flowing water. It is the primary cause of bridge failures in the United States, responsible for approximately 60% of all bridge collapses. Scour is most dangerous during floods when water velocity increases dramatically. FHWA...