 Interstate 172 | ||||
|---|---|---|---|---|
 I-172 highlighted in red | ||||
| Route information | ||||
| Auxiliary route of I-72 | ||||
| Maintained by IDOT | ||||
| Length | 19.69 mi[1] (31.69 km) | |||
| Existed | 1995–present | |||
| NHS | Entire route | |||
| Major junctions | ||||
| South end |     I-72 / US 36 / IL 110 (CKC) in Hull | |||
| North end |   US 24 / IL 110 (CKC) / IL 336 in Quincy | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Pike, Adams | |||
| Highway system | ||||
| ||||
Interstate 172 (I-172) is a spur route, the only auxiliary route of I-72. It is located entirely within the US state of Illinois and is completely concurrent with IL 110. The highway runs north from its start outside of Hannibal, Missouri, to about 2.5 miles (4.0 km) west of Fowler. At U.S. Route 24 (US 24), I-172 becomes Illinois Route 336 (IL 336), which runs north and east to Macomb via Carthage. The entire portion of I-172 and I-72 from I-172 east to Springfield is also known by its former name, the Central Illinois Expressway.[2] I-172 is 19.69 miles (31.69 km) long.[1]
- ^ a b Illinois Technology Transfer Center (2007). "T2 GIS Data". Retrieved November 8, 2007.
- ^ Schoenburg, Bernard (April 28, 1995). "Road to the top? Designation puts expressway in the 'big leagues'". The State Journal-Register. Springfield, Illinois.