Police said a southern Indiana woman who drove the wrong way on the interstate also bit an Indiana State Police trooper.
Oldham County Dispatch said 10 to 12 cars ended up on the side of the highway of I-71 south with flat tires.
The crash happened just after 8:30 a.m. Monday.
Steve Sheangshang, 45, was arrested last week for allegedly shooting and killing a 35-year-old Scott County Sheriff's Deputy Caleb Conley on Interstate 75.
KYTC officials recently released updated surveillance images showing suspects damaging light poles to get to the copper wiring inside.
The northbound lanes are expected to reopen within the next hour.
The cart was recovered and returned to Walmart.
Drivers are advised to use caution if driving through "Spaghetti Junction" or take an alternate route.
From brakes to tires, alignment, weight limits and more, Kentucky State Police inspectors find thousands of violations every year on commercial vehicles.
KYTC Secretary Jim Gray says engineers are simultaneously working on repair plans while inspections take place.