The cab and the first trailer flipped over the concrete median around 5:30 a.m. into the southbound lane and landed on the driver's side. The other trailer remained upright in a ditch.
No cargo was spilled. But there was a massive diesel fuel spill.
The semi-tractor was owned by Federal Express. The first trailer was loaded with general freight, and the second trailer was empty, an Indiana State Police press release said. The 37-year-old driver from Justice, Ill., was headed to Chicago from Louisville, Ky.
The driver was taken to Saint Anthony's Hospital in Crown Point for abrasions and complaints of pain. He was able to free himself from the semi before a trooper arrived, Indiana State Police said.
Northbound traffic experienced a one- to two-mile backup by 6:30 a.m. Traffic was reduced only two lanes in each direction, with one lane closed in each direction. All lanes of traffic were later reopened during the morning rush hour.