Illinois Route 140 (IL 140) is a east–west highway with its western terminus at Illinois Route 143 in Alton and its eastern terminus at U.S. Route 40 (US 40) near Mulberry Grove. It also overlaps IL 111 in Alton and IL 127 in Greenville. The highway terminates east of Mulberry Grove at a junction with US 40.
Major intersections
See also
- List of state routes in Illinois