Illinois State Route 37 is a norht-south highway along Interstate 57 in Jefferson County. This is a good surface alternative to the interstate. It provides access to the Jefferson County portions of Rend Lake. IL St Rt 37 passes through the following towns in Jefferson County. Dix
Mt Vernon
Bonnie Ina IL St Rt 37 is not multi-plexed in Jefferson County. IL St Rt 37 intersectst the followin highways in Jefferson County. Illinois State Route 15, at Mt. Vernon.
