Interstate 88

Interstate 88 Primary route of the Interstate Highway System in Illinois
Length:	140 mi (225 km)
Formed:	1988
West end:	Interstate 80 near Moline, IL
Major junctions:	Interstate 39 in Rochelle, IL Interstate 294 in Hinsdale, IL
East end:	Interstate 290 near Chicago, IL
Illinois state highway system < IL 84 IL 89 >

Interstate 88 (abbreviated I-88) is an interstate highway entirely within the state of Illinois. It runs from an intersection with Interstate 80 near Silvis, Illinois, near Moline to an intersection with Interstates 290 and 294 in Hillside, Illinois, near Chicago.

History

Prior to its designation as an Interstate Highway, the route was known as Illinois Route 5, and before that, Illinois 190.

The reason for I-88's original designation and continued existence as an Interstate has to do with a technicality in the old National Maximum Speed Law (NMSL). Originally passed in 1973, NMSL was amended in 1987 to permit 65-mph (105 km/h) speed limits on rural stretches of Interstate highways only. In spite of the fact that IL 5 was fully up to Interstate standards, it still had to carry a 55 mph (88 km/h) limit because of this wording in NMSL. The Illinois Department of Transportation (IDOT) and Illinois State Toll Highway Authority (ISTHA) petitioned the American Association of State Highway and Transportation Officials (AASHTO) to re-designate IL 5 as an Interstate, and in 1990, AASHTO approved the request and assigned the Interstate 88 numbering to the highway. NMSL would be completely repealed only five years later in 1995, but the I-88 shields remain up to this day.

In honor of the 40th U.S. president, Ronald Reagan, IDOT renamed the freeway portion "Ronald Reagan Memorial Freeway" upon his death in 2004. Reagan was a native of nearby Dixon. Similarly, ISTHA renamed the toll portion "Ronald Reagan Memorial Tollway." The tollway portion of I-88 was previously known as the "East West Tollway".

There is no direct off-ramp access to U.S. Route 52, Illinois Route 23, and Illinois Route 25. In addition, I-88 merges with Illinois Route 56 for a short distance. During the merge, Illinois 56 is the only tolled state route in Illinois.

As of 2007, I-88 has no spur routes. None are planned for the near future.

Exit list

The Illinois State Toll Highway Authority does not use exit numbers.

County	Location	Mile	#	Destinations	Notes
Rock Island	Silvis			IL 5 west / IL 92 west – Moline, Rock Island	Continuation beyond I-80
			1	I-80 to I-74 – Peoria, Des Moines	Signed as exits 1A (east) and 1B (west)
			2	Former IL 2
	Joslin		6	IL 92 east – Joslin	East end of IL 92 overlap
	Hillsdale		10	Hillsdale, Port Byron	Former IL 2
Whiteside	Erie		18	Erie, Albany
	Lyndon		26	IL 78 – Morrison, Prophetstown
	Rock Falls		36	US 30 west – Clinton, Rock Falls, Sterling
			40	IL 40 – Rock Falls, Sterling
		44	44	US 30 – Joliet, Rock Falls
		West end of tollway
Lee	Dixon	54.5		IL 26 – Dixon
		54.5	Dixon Toll Plaza
Ogle	Rochelle	76		IL 251 – Rochelle, Mendota
		78.5		I-39 / US 51 – Rockford, Bloomington, Normal
DeKalb	DeKalb	91.5		To IL 38 / IL 23 / Annie Glidden Road – DeKalb
		91.5	DeKalb Toll Plaza
		93	DeKalb Oasis
		94		To IL 38 / Peace Road
Kane	Sugar Grove	109.5		IL 47	Eastbound exit and westbound entrance
		113.5		IL 56 west to IL 47 / US 30 – Sugar Grove	West end of IL 56 overlap; westbound exit and eastbound entrance
	North Aurora	115		Orchard Road
		117		IL 31 / IL 56 east – Aurora, Batavia	East end of IL 56 overlap
			Bridge over the Fox River
		117.5	Aurora Toll Plaza
	Aurora	119		Farnsworth Avenue
DuPage	Naperville	123.5		IL 59
	Warrenville	125		Winfield Road
	Naperville	128		Naperville Road
	Lisle	130		IL 53	Westbound exit and eastbound entrance
	Downers Grove	131		I-355 south – Joliet
		131.5		I-355 north - Northwest Suburbs
		134.5		Highland Avenue
	Oak Brook	135	Meyers Road Toll Plaza (eastbound only)
		136.5		Midwest Road	Eastbound exit and entrance
		137		IL 83 / Cermak Road, 22nd Street	No eastbound exit
		138	York Road Toll Plaza (westbound only)
	Hillside	139		I-294 south (Tri-State Tollway) - Indiana	Eastbound exit and westbound entrance
Cook		140.5		I-294 north (Tri-State Tollway) / I-290 west - Milwaukee, Rockford	Eastbound exit and westbound entrance
		140.5		I-294 south / IL 38 west (Roosevelt Road) - Indiana	Westbound exit and eastbound entrance
				US 12 / US 20 / US 45 (Mannheim Road)	Eastbound exit and westbound entrance
				I-290 east – Chicago	Eastbound exit and westbound entrance

References

External links

• Illinois Highway Ends: Interstate 88

Main Interstate Highways (multiples of 5 in pink)
4	5	8	10	12	15	16	17	19	20	22	24	25	26	27	29	30
35	37	39	40	43	44	45	49	55	57	59	64	65	66	68	69
70	71	72	73	74	75	76 (W)		76 (E)		77	78	79	80	81	82
83	84 (W)		84 (E)		85	86 (W)		86 (E)		87	88 (W)		88 (E)		89	90
91	93	94	95	96	97	99	(238)		H-1		H-2		H-3
Unsigned			A-1		A-2		A-3		A-4		PRI-1		PRI-2		PRI-3
Lists		Primary			Main - Intrastate - Suffixed - Future - Gaps
		Auxiliary			Main - Future - Unsigned
		Other			Standards - Business - Bypassed

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