WILLIAMSON COUNTY, IL (KFVS) - A crash involving a semi on I-57 in Williamson County, Illinois is causing some traffic delays.
According to the ISP, a semi jackknifed on I-57 near mile marker 45. Troopers say the semi then ran off of the road into the median.
The crash happened near a major road construction project on I-57. Troopers are urging motorists to use caution if traveling in this are.