Illinois Route 99
IL 99 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT | ||||
| Length | 32.08 mi (51.63 km) | |||
| Existed | 1936–present | |||
| Major junctions | ||||
| South end | IL 104 in Chambersburg | |||
| US 24 in Mt. Sterling | ||||
| North end | IL 101 in Huntsville | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Pike, Brown, Schuyler | |||
| Highway system | ||||
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Illinois Route 99 is a north–south state route in western Illinois. It runs from Illinois Route 104 across the Illinois River and Meredosia, north to Illinois Route 101 in Brooklyn (Schuyler County). This is a distance of 32.08 miles (51.63 km).