Mc Lean County Highway 14 is a east-west highway in Central Mc Lean County. This runs from Towanda to a junction with Illinois State Route 165, near Merna. Mc LCH 14 passes through the following town in Mc Lean County. Towanda Mc LCH 14 intersects the following highways in Mc Lean County. Mc Lean County Highway 29, at Towanda. Illinois State Route 165, near Merna.