State highway in southern Illinois, US
Illinois Route 146 (IL 146) is an east–west state highway in the U.S. state of Illinois. It serves the extreme southern region of the state, commonly called Little Egypt or the Illinois Ozarks. IL 146 is 92.93 miles (149.56 km) long.[1] An east–west highway, it serves Hardin County, Pope County, Johnson County, Union County, and Alexander County. These are some of the least-populated counties in Illinois. IL 146 serves two sections of the Shawnee National Forest.