Mc Lean County Highway 27 is a north-south highway in South-Central Mc Lean County. It runs from Downs to the Mc Lean/De Witt County Line. McLCH 27 passes through the following town in Mc Lean County. Downs
NB Mc LCH 27 at the De Witt/Mc Lean County Line. SB Mc LCH 27 south of U.S. Rt. 136. A BGS on WB I-74. NB Mc LCH 27 at Downs. A junction marker on WB Mc LCH 36. The northern end at U.S. Rt. 150 in Downs. The northern end marker.
