Flooding may have damaged 11 bridges especially susceptible to “scouring” — the erosion of stream banks by rapidly flowing water. Scour is the leading cause of bridge failures in the United States, according to the Federal Highway Administration.
Inspection of the bridges will be done by USI Consulting Inc., an engineering firm that has previously examined the structures, said Rick Carney, county highway superintendent. The cost will be $500 per bridge, under a contract signed Monday, May 6, by the Boone County Commissioners.
All of the bridges are classified as “scour susceptible,” Carney said, adding damage may have resulted from historic flooding on April 18 and19.
“Scour critical means they’re going to wash out ... if enough water comes through,” Carney said.
See Wednesday's Times Sentinel for the full story.