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Interstate 64
Interstate 64
	I-64 highlighted in red
Route information
	Maintained by IDOT
Length	130.4 mi (209.9 km)
Existed	1956–present
NHS	Entire route
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; IL 1 in Grayville;
East end	I-64 at Indiana state line
Location
Country	United States
State	Illinois
Counties	St. Clair, Clinton, Washington, Jefferson, Wayne, White
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; Illinois State Highway System; Interstate; US; State; Tollways; Scenic;

Interstate 64 (I-64) in the US state of Illinois is a major east–west Interstate Highway that runs through southern Illinois from the St. Louis metropolitan area east to the Indiana state line near Grayville, Illinois. It travels a distance of 130.4 miles (209.9 km).^[1]

Route description

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 proceeds through St. Clair County towards the Belleville area traveling through the eastern/southeastern St. Louis suburbs of Caseyville, Fairview Heights, O'Fallon, and Shiloh. In Shiloh, the Interstate skirts the northern edge of Scott Air Force Base and MidAmerica St. Louis Airport and provides access to Mascoutah and Lebanon via Illinois Route 4 (IL 4). A new interchange at Rieder Road was completed in September 2017 to create better access to Scott Air Force Base.^[2] As part of the new interchange, a third lane in each direction, a wide left shoulder to accommodate a future fourth lane in each direction, and a center Jersey barrier was added from one mile (1.6 km) west of Air Mobility Drive/IL 158 to Rieder Road.

At the St. Clair–Clinton county line, the Interstate passes the exurb of New Baden, after which it crosses the southern boundary of Clinton County and leaves the St. Louis metropolitan area. It then traverses a rural part of Illinois through Washington and Jefferson counties, which has no adjacent cities or major intersections passing; it reaches the city of Mount Vernon in Jefferson County, where it has a short concurrency with I-57. Mount Vernon is the only major city and intersection served by I-64 in Illinois outside of the St. Louis metropolitan area.^[3]^[1] Past Mount Vernon, the Interstate enters another rural stretch through parts of Jefferson, Wayne, and White counties before crossing the Wabash River into Indiana.^[3]

History

Starting in 1970, a small portion of I-64 opened just west of the Indiana state line.^[4] In 1973, another small portion opened just south of Mount Vernon.^[5] By 1975, two portions of I-64 (from IL 4 to I-57 and IL 111 to IL 159) opened.^[6] By 1977, the rest of the route opened. As a result of the completion, US 460 was completely removed from Illinois.^[7]

Exit list

County	Location^[8]	mi^[1]	km	Exit	Destinations	Notes
Mississippi River		0.0	0.0		I-55 south / I-64 west / US 40 west – St. Louis	Continuation into Missouri
Mississippi River		0.0	0.0	Poplar Street Bridge Illinois–Missouri line
St. Clair	East St. Louis	0.6	0.97	1	IL 3 south / Great River Road – Cahokia	Western end of IL 3/GRR concurrency; exit includes direct exit ramp onto 13th Street / Tudor Avenue
		0.9	1.4	2A	Third Street – Eads Bridge, Casino Queen	Westbound exit and eastbound entrance
		1.3	2.1	2B-C	Martin Luther King Bridge – Downtown St. Louis	Signed as exits 2B (left exit) and 2C (right exit); no eastbound exits
		2.5	4.0	3A	I-55 / Great River Road north / US 40 east to I-70 east – Chicago, Indianapolis	Eastern end of I-55/US 40/GRR concurrency; exit unnumbered eastbound; I-55 north exit 3, south exit 3A
		2.6	4.2	3B	I-70 west (Dwight D. Eisenhower Highway) to IL 3 north – Kansas City	Westbound exit and eastbound entrance; I-70 exit 3
		2.7	4.3	3	IL 3 north (St. Clair Avenue)	Eastern end of IL 3 concurrency; no westbound exit
		3.3	5.3	4A	Baugh Avenue / 18th Street	Westbound exit and entrance
		4.2	6.8	4B	25th Street
	Washington Park	5.8	9.3	6	IL 111 (Kingshighway)
	Caseyville	7.1	11.4	7	I-255 / US 50 west – Memphis, Chicago	Western end of US 50 concurrency; I-255 exit 20
	Caseyville	8.4	13.5	9	IL 157 (Bluff Road) – Caseyville, Centreville
	Fairview Heights	12.0	19.3	12	IL 159 (Illinois Street) – Belleville, Collinsville
	O'Fallon	14.2	22.9	14	Old US Highway 50 – O'Fallon
		15.7	25.3	16	Green Mount Road – O'Fallon, Shiloh
		18.6	29.9	19	US 50 east / IL 158 west (Air Mobility Drive) – Carlyle, Scott Air Force Base	Eastern end of US 50 concurrency; northern terminus of IL 158; signed as exits 19A (west) and 19B (east)
				21	Rieder Road	Completed in 2017
	Mascoutah	22.6	36.4	23	IL 4 – Mascoutah, Lebanon	Serves MidAmerica St. Louis Airport
	New Baden	27.1	43.6	27	IL 161 – New Baden
Clinton	Looking Glass Township	34.2	55.0	34	Albers
Washington	Okawville Township	40.4	65.0	41	IL 177 – Okawville
	Nashville	49.8	80.1	50	IL 127 – Carlyle, Nashville
	Richview Township	60.7	97.7	61	US 51 – Centralia, Ashley
Jefferson	Casner–Shiloh township line	68.6	110.4	69	Woodlawn
	Mount Vernon	73.3	118.0	73	I-57 north – Chicago	Western end of I-57 concurrency, exit 96 on I-57
		74.8	120.4	95	IL 15 – Mount Vernon, Ashley	Exit numbers follow I-57; serves Mount Vernon Outland Airport
		75.8	122.0	94	Veterans Memorial Drive
	McClellan Township	78.0	125.5	78	I-57 south to I-24 – Memphis, Nashville	Eastern end of I-57 concurrency; exit 92 on I-57. Access to Rend Lake
	Dodds Township	79.7	128.3	80	IL 37 – Mount Vernon
	Pendleton Township	88.5	142.4	89	Belle Rive, Bluford
Wayne	Orel Township	99.3	159.8	100	IL 242 – Wayne City
Wayne	Barnhill Township	110.1	177.2	110	US 45 – Mill Shoals
White	Burnt Prairie Township	116.7	187.8	117	CR 20 – Burnt Prairie
White	Grayville	129.4	208.2	130	IL 1 – Grayville, Carmi
Wabash River		130.4	209.9		I-64 east – Evansville, Louisville	Continuation into Indiana
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access

References

^ ^a ^b ^c ^d "Overview Map of Interstate 64 in Illinois" (Map). Google Maps. Retrieved August 2, 2014.
^ Landis, Kelsey (September 8, 2017). "After Nearly Three Years of Construction, New Exit off Interstate 64 Will Open Soon". Belleville News-Democrat. Retrieved November 25, 2018.
^ ^a ^b Illinois Department of Transportation (November 2008). Interstate Exit Numbers of Illinois (PDF) (Map). Scale not given. Springfield: Illinois Department of Transportation. Archived from the original (PDF) on May 29, 2010. Retrieved August 2, 2014.
^ Illinois Division of Highways; Rand McNally (1970). Illinois Official Highway Map (Map). [1:772,500]. Springfield: Illinois Division of Highways. Retrieved November 16, 2020 – via Illinois Digital Archives.
^ Illinois Department of Transportation (1973). Illinois Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation. Retrieved November 16, 2020 – via Illinois Digital Archives.
^ Illinois Department of Transportation (1975). Illinois Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation. Retrieved November 16, 2020 – via Illinois Digital Archives.
^ Illinois Department of Transportation (1977). Illinois Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation. Retrieved November 16, 2020 – via Illinois Digital Archives.
^ Google (August 2, 2014). Town/City Boundary Map (Map). Google. Retrieved August 2, 2014 – via John Coryat.