A new report by the Arkansas Department of Transportation says its Heavy Bridge Maintenance Inspection Program should be placed under new management and reorganized for failing to locate a cracked tie girder that led to an emergency closure of a major I-40 bridge.
The Hernando do Soto Bridge over the Mississippi River between Memphis, Tennessee, and West Memphis, Arkansas, was shut down from May 11 to August 2 after a crack was discovered during a routine inspection. The closure of the major freight corridor cost the trucking industry an estimated $2.4 million a day and led to rerouting 55,000 drivers that use the bridge daily.
The After Action Report released November 10 outlined several management flaws in the bridge inspection program that let to the crack going undetected since at least 2016. The same day the report was released, two longtime bridge engineers retired, according to news reports.
The ArDOT report casts much of the blame on an inspector fired soon after the bridge was closed. The report says ArDOT asked the U.S. Department of Transportation’s Office of Inspector General “to determine if this negligence constitutes a criminal action.” It says the inspector general’s office has interviewed ArDOT bridge inspection employees and been provided data and reports. ArDOT is awaiting the investigation’s conclusion.
The ArDOT report says the crack in a welded splice between two plates in a tie girder “was visible at least as early as 2016,” and the fired inspector “was directly responsible for inspecting that portion of the bridge in 2016, 2017, 2019 and 2020.”
A drone inspection in 2019 had photographed the crack. The 2021 routine inspection that led to the bridge’s closure was conducted by Michael Baker International, ArDOT’s consultant bridge inspector.
