Kentucky State Police said a semi overturned on I-75 in Whitley County following a rockslide Sunday night.
It happened just before 10 p.m. near mile marker 24 in Corbin.
Police said a semi was driving north when a rockslide sent a boulder sliding across the road.
Witnesses told police the driver of the truck tried to swerve to miss it, but lost control and flipped into the median.
According to police the driver was taken to the hospital with only minor injuries.
I-75 was closed to one lane for hours, but all lanes have since re-opened.