The Indiana Department of Transportation continued defending its construction of the Borman Expressway on Friday, pointing to problems with flap gates and levees as the causes of recent heavy flooding on the road.
INDOT released preliminary information from its ongoing investigation into why much of the expressway flooded near Kennedy Avenue after heavy rains Aug. 24.
It took nearly a week to completely clear the lanes and ramps of water.
The agency confirmed earlier reports that flap gates on drainage pipes did not close properly, leading to the flooding near Kennedy.
The gates are meant to prevent water from flowing through the pipes back toward the highway.
But INDOT also asserted flap gates are supposed to be maintained by the local municipalities in which they are located.