 Illinois Route 100 | ||||
|---|---|---|---|---|
 IL 100 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT | ||||
| Length | 159.09 mi[1] (256.03 km) | |||
| Existed | 1924[2]–present | |||
| Major junctions | ||||
| South end |  US 67 in Alton | |||
  I-72 / US 36 in Bluffs US 67 / IL 104 in Meredosia US 67 / IL 103 in Frederick  US 24 / US 136 in Lewistown | ||||
| North end |  IL 78 in Dunfermline | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Madison, Jersey, Greene, Calhoun, Pike, Scott, Morgan, Cass, Schuyler, Fulton | |||
| Highway system | ||||
| ||||
Illinois Route 100 (IL-100) is a 159.09-mile-long (256.03 km) state highway in the southwest Illinois. It generally parallels the Illinois River. Starting in downtown Alton, it trends northward to Buckheart Township near Canton. It makes up much of the Illinois River Road, a U.S. National Scenic Byway.[1]
- ^ a b Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08.
- ^ Carlson, Rich. Illinois Highways Page: Routes 81 thru 100. Last updated March 15, 2005. Retrieved April 20, 2006.