| Illinois Route 140 | ||||
|---|---|---|---|---|
| Route information | ||||
| Maintained by IDOT | ||||
| Length: | 52.05 mi[2] (83.77 km) | |||
| Existed: | 1935[1] – present | |||
| Major junctions | ||||
| West end: | ILL 143/Great River Road in Alton | |||
| East end: | US 40 in Mulberry Grove | |||
| Location | ||||
| Counties: | Madison, Bond | |||
| Highway system | ||||
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Illinois state highway system
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Illinois Route 140 is an east–west highway with its western terminus at Alton and its eastern terminus at Illinois Route 185 and U.S. Route 40 in Vandalia. It also overlaps Illinois Route 111 in Alton and Illinois Route 127 in Greenville. This is a distance of 52.05 miles (83.77 km).[2]
Although this route may appear to be a derivative of US 40, it does not follow any of the old US 40 alignment except for a portion of the Historic National Road in Fayette County from US 40 to Vandalia. IDOT has since truncated the eastern end of IL 140 to the town of Mulberry Grove with the intersection of US 40.
In 2007 IDOT decommissioned the portion of Route 140 from near the Bond and Fayette County line at Mulberry Grove, east to Vandalia. While that section of highway is no longer marked for Route 140, the state still maintains it's Historic National Road signage.