De Witt County Highway 22 is a short north-south highway in Northern De Witt County. It runs from the De Witt/Mc Lean County Line to Farmer City. DWCH 22 passes through the following town in De Witt County. Farmer City DWCH 22 crosses the following highways in De Witt County. Interstate 74, at Farmer City. (NO INTERCHANGE) U.S. Rt. 150, at Farmer City.