Interstate 172 (I-172) is a spur route from
I-72 entirely within the
US state of
Illinois
Illinois ( ) is a state in the Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolitan areas include, Peoria and Roc ...
. The highway runs north from its start outside of
Hannibal, Missouri, to about 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
Carthage was the capital city of Ancient Carthage, on the eastern side of the Lake of Tunis in what is now Tunisia. Carthage was one of the most important trading hubs of the Ancient Mediterranean and one of the most affluent cities of the clas ...
. 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.
I-172 is long.
Route description
I-172 begins at a
trumpet interchange
In the field of road transport, an interchange (American English) or a grade-separated junction (British English) is a road junction that uses grade separations to allow for the movement of traffic between two or more roadways or highways, usin ...
with
I-72/
US 36, about east of
Hannibal
Hannibal (; xpu, 𐤇𐤍𐤁𐤏𐤋, ''Ḥannibaʿl''; 247 – between 183 and 181 BC) was a Carthaginian general and statesman who commanded the forces of Carthage in their battle against the Roman Republic during the Second Pu ...
before immediately entering
Adams County. I-172 enters the
Quincy area at exit 10 (
IL 96), passing to the far east of the city. I-172 ends just northeast of Quincy, ending at
US 24, continuing north as
IL 110/
IL 336 (
Chicago–Kansas City Expressway).
History
I-172 originally was what
I-72 is now from
Springfield to the current interchange with I-172. This was approved by the
(AASHTO) on June 9, 1991.
On April 23, 1995, after a reexamination by the
Federal Highway Administration
The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two programs, the Federal-aid Highway Program ...
(FHWA), the highway to Hannibal was redesignated I-72, with the highway north to
Quincy redesignated as I-172. The highway is non-chargeable, meaning that, even though it is an Interstate (designed and constructed to
Interstate Highway standards and specifications), it was not built with federal funds.
Exit list
See also
*
*
References
External links
*{{ccat-inline
72-1
72-1
1
Transportation in Pike County, Illinois
Transportation in Adams County, Illinois