Given the question: Information: - Illinois Route 336 (IL336, also known as the Thomas A. Oakley Highway) is a four-lane freeway/expressway combination that serves western Illinois. It is also used by the Illinois Department of Transportation (IDOT) as a part of Federal-Aid Primary Highway 315 (FAP315) to refer to a future project connecting the cities of Quincy and Peoria via underserved Macomb. - Interstate 72 (I-72) is an Interstate Highway in the midwestern United States. Its western terminus is in Hannibal, Missouri, at an intersection with U.S. Route 61; its eastern terminus is at Country Fair Drive in Champaign, Illinois. The route runs through the major cities of Decatur, Illinois and Springfield, Illinois. In 2006, the Illinois General Assembly dedicated all of Interstate 72 as Purple Heart Memorial Highway. The stretch between Springfield and Decatur is also called Penny Severns Memorial Expressway, and the section between Mile 35 and the Mississippi River is known as the Free Frank McWorter Historic Highway. - Interstate 172 (I-172) is a spur route from Interstate 72. The highway runs north from its start outside of Hannibal, Missouri to just two miles (3km) west of Fowler, Illinois. At U.S. Highway 24, Interstate 172 becomes Illinois Route 336, which runs north and east to Macomb, Illinois via Carthage, Illinois. 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. - Illinois Route 57 is a north -- south state highway in western Illinois . It runs from Interstate 172 in Fall Creek to U.S. Route 24 and Illinois Route 104 in Quincy , a distance of 12.59 miles ( 20.26 km ) . What is the relationship between 'illinois route 57' and 'illinois department of transportation'?
The answer is:
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