Interstate 64 in Illinois

Interstate 64
Route information
Maintained by IDOT
Length:	130.4 mi (209.9 km)
Existed:	1956 – present
Major junctions
West end:	I-55 / I-64 / US 40 at Missouri state line
	I-55 / I-70 / US 40 / IL 3 in East St. Louis I-255 / US 50 in Washington Park US 50 / IL 158 in O'Fallon US 51 near Richview I-57 in Mt. Vernon US 45 north of Mill Shoals
East end:	I-64 at Indiana state line
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Illinois State Highway System Interstate U.S. State Tollways ← IL 62 IL 64 →

Interstate 64 (I-64) in the U.S. state of Illinois is a major east–west Interstate highway that runs from the St. Louis, Missouri, metropolitan area east to the Indiana state line near Grayville, Illinois. It travels a distance of 130.4 miles (209.9 km).

I-64 enters Illinois running concurrently with I–55 and U.S. Route 40 (US 40) over the Mississippi River on the Poplar Street Bridge. After splitting from these highways in East St. Louis, I-64 turns southeasterly and runs through St. Clair, Clinton, Washington, and Jefferson counties through a rural part of Illinois with no major cities or intersections. The only major intersection outside of St. Louis is a short concurrency with I-57 near Mount Vernon. Past this, the Interstate enters another rural stretch through parts of Jefferson, Wayne, and White counties before crossing the Wabash River into Indiana.

...
Wikipedia