U.S. Route 51 in Illinois

U.S. Route 51
	US 51 highlighted in red, IL 251 in blue
Route information
	Maintained by IDOT and ISTHA
Length	415.95 mi[1] (669.41 km) Length may include both directions of route where it is routed along one-way streets.
Existed	1926–present
Major junctions
South end	US 51 / US 60 / US 62 near Wickliffe, KY
	I-57 near Cairo; I-64 near Richview; I-70 at Vandalia; I-72 at Decatur; I-55 / I-74 at Bloomington; I-39 / I-55 at Normal; I-80 at La Salle; ; I-88 at Rochelle; ; I-90 at Rockford; I-39 / I-90 at South Beloit
North end	US 51 at the Wisconsin state line in South Beloit
Location
Counties	Alexander, Pulaski, Union, Jackson, Perry, Washington, Jefferson, Marion, Fayette, Shelby, Christian, Macon, DeWitt, McLean, Woodford, Marshall, LaSalle, Lee, Ogle, Winnebago
Highway system

U.S. Route 51 (US 51) in the U.S. state of Illinois, is a main north–south artery that runs from the Ohio River north to the Wisconsin border, a distance of 415.95 miles (669.41 km).[1]

Route description

US 51 enters Illinois from Kentucky at the city town of Cairo, Illinois. The highway heads northbound to a village near Cairo called Mounds, and begins to overlap Interstate 57 (I-57), following it for 24 miles (39 km) to Dongola, before splitting and heading north. The highway remains two lanes wide from Dongola to Assumption with the exception of a 10-mile (16 km) section between Centralia and I-64.

Past Assumption, US 51 becomes an expressway to Decatur. In Decatur, US 51 follows I-72 to bypass the city. US 51 leaves I-72 after eight miles (13 km), and it heads north to Bloomington–Normal as an expressway. At Bloomington–Normal, US 51 follows I-74 for a mile, then I-55 for seven miles (11 km), before following I-39 for 140 miles (230 km).

US 51 follows I-39, intersecting I-80 and I-88 along the way. The highway also follows US 20 south of Rockford (while still following I-39). I-39/US-51 join I-90, making US 51 one of the few toll highway in Illinois that is a U.S. Highway. US 51 exits I-39/I-90 just a mile south of the Wisconsin state line. Then US 51 follows Illinois Route 75 (IL 75) west to the intersection of IL 251, and then turns north through South Beloit, Illinois to enter Wisconsin.

History

US 51 was established in Illinois in the 1920s. Over the years, it became a heavily traveled highway, often experiencing many accidents, particularly in the northern half of the state. This highway gained the moniker of "Killer 51". As a result of these problems, Illinois pushed for a new four lane highway along the corridor. One was proposed in the 1960s and 1970s as part of a proposed supplemental freeway system, but only the area between Rockford and Decatur was given a high priority.[2]

In the 1980s and early 1990s, US 51 was rebuilt to Interstate Highway standards between Rockford and Bloomington–Normal on a new alignment. This new highway became Interstate 39, and US 51 was rerouted onto it. In addition, north of Rockford, US 51 was rerouted onto the existing I-90 tollway segment between South Beloit and Cherry Valley. Most of the old highway became IL 251.

South of Bloomington–Normal to Decatur, US 51 remained largely on the original alignment, and it was expanded to an expressway. Further continuation of the expressway occurred in the 2000s, when the highway was upgraded southward from Decatur to Assumption, Illinois.

Future

Plans are underway to continue the US 51 expressway south of Assumption to Centralia.[3] An environmental impact statement is currently being prepared. However, construction funding remains elusive.

Major intersections

County	Location	mi[4]	km	Exit	Destinations	Notes
Alexander	Cairo	0.0	0.0		US 51 south / US 60 east / US 62 east – Wickliffe	US 51/US 60/US 62 continue into Kentucky
		0.2	0.32		US 60 west / US 62 west to I-57 south – Charleston	Northern end of US 60/US 62 concurrency
		4.5	7.2		IL 37 north / IL 3 begins – Mound City	Southern terminus of IL 37; southern terminus of IL 3; southern end of IL 3 concurrency
		5.3	8.5	1	IL 3 north – Olive Branch I-57 south – Sikeston, MO	Northern end of IL 3 concurrency; southern end of I-57 concurrency
Pulaski		11.4	18.3	8	Mounds Road
Pulaski		21.4	34.4	18	Ullin Road
Union	Dongola	28.2	45.4	24	Dongola Road
	Dongola	28.8	46.3	25	I-57 north – Chicago	Northern end of I-57 concurrency; northbound exit and southbound entrance
	Anna	36.0	57.9		IL 146 – Jonesboro, Vienna
Jackson	Carbondale	55.0	88.5		IL 13 – Murphysboro, Marion
Jackson	De Soto	61.3	98.7		IL 149 – Murphysboro, Hurst
Perry	Du Quoin	72.4	116.5		IL 14 east – Christopher	Western terminus of IL 14
	Du Quoin	75.5	121.5		IL 152 west – Pyatts	Eastern terminus of IL 152
	Sunfield	80.4	129.4		IL 154 – Red Bud, Sesser
Washington	Ashley	98.0	157.7		IL 15 west – East St. Louis	Western end of IL 15 concurrency
	Ashley	100.9	162.4		IL 15 east – Mount Vernon	Eastern end of IL 15 concurrency
	Richview	105.7	170.1		I-64 – Mount Vernon, East St. Louis	I-64 exit 61
	Irvington	109.6	176.4		IL 177 west – Belleville	Western terminus of IL 177
Jefferson	No major junctions
Marion	Centralia	116.2	187.0		IL 161 – New Baden, Kell
	Sandoval	122.7	197.5		US 50 west – Carlyle	Western end of US 50 concurrency
	Sandoval	123.0	197.9		US 50 east – Salem	Eastern end of US 50 concurrency
Fayette	Vandalia	146.9	236.4		US 40 east / IL 185 east – Bluff City	Eastern end of US 40/IL 185 concurrency
		148.5	239.0		US 40 west / IL 185 west – Taylor Springs, Mulberry Grove	Western end of US 40/IL 185 concurrency
		148.7	239.3		I-70 – Effingham, St. Louis	Exit 63 on I-70
Shelby	No major junctions
Christian	Pana	178.1	286.6		IL 16 west – Hillsboro	Western end of IL 16 concurrency
	Pana	178.6	287.4		IL 29 north – Taylorville	Southern terminus of IL 29
		180.2	290.0		IL 16 east – Shelbyville	Eastern end of IL 16 concurrency
Shelby	No major junctions
Macon		207.3	333.6		US 51 Bus. north
		211.2	339.9		IL 48 – Taylorville, Decatur
	Harristown	214.7	345.5	133	I-72 west / US 36 – Springfield, Decatur	Southern end of I-72 concurrency; signed as exits 133A (east) and 133B (south)
	Decatur	219.2	352.8	138	IL 121 – Decatur, Lincoln
	Decatur	222.2	357.6	141	I-72 east / US 51 Bus. south – Champaign, Urbana, Decatur	Northern end of I-72 concurrency
DeWitt	Clinton	237.9	382.9		US 51 Bus. north – Clinton
		239.5	385.4		IL 54 – Springfield, Clinton
		240.0	386.2		IL 10 – Lincoln, Clinton
		242.0	389.5		US 51 Bus. south – Clinton
McLean	Heyworth	251.9	405.4		US 136 – McLean, Rantoul
		260.5	419.2	135	US 51 Bus. (Main Street) – Bloomington I-74 east – Champaign	Southern end of I-74 concurrency
		262.2	422.0	157A	I-55 south – St. Louis, Springfield	Southern end of I-55 concurrency
	Bloomington	262.4	422.3	157B	I-55 Bus. north (Veterans Parkway)	Signed as exit 134B (north) southbound
	Bloomington	265.5	427.3	160	US 150 / IL 9 (Market Street) – Pekin
		269.1	433.1	163	I-74 west – Peoria	Northern end of I-74 concurrency
		270.3	435.0	-	I-55 north – Chicago I-39 begins	Northern end of I-55 concurrency; southern end of I-39 concurrency; southern terminus of I-39; I-55 exit 154
		272.1	437.9	2	US 51 Bus. south – Bloomington, Normal
	Hudson	275.2	442.9	5	CR 12 (Franklin Street) – Hudson
		278.3	447.9	8	IL 251 north / CR 8 (Lake Bloomington Road) – Kappa	Southern terminus of IL 251
Woodford	El Paso	284.9	458.5	14	US 24 – El Paso, Peoria
	Woodford	292.9	471.4	22	IL 116 – Peoria, Pontiac
	Minonk	297.5	478.8	27	Minonk
Marshall	Wenona	305.6	491.8	35	IL 17 – Lacon, Wenona
LaSalle	Lostant	312.2	502.4	41	IL 18 – Henry, Streator
	Tonica	319.2	513.7	48	Tonica
		322.3	518.7	51	IL 71 – Hennepin, Oglesby
		323.0	519.8	52	IL 251 – Peru, LaSalle
	Oglesby	324.4	522.1	54	Oglesby
	Illinois River	326.5	525.5	Abraham Lincoln Memorial Bridge
	La Salle	327.3	526.7	57	US 6 – LaSalle, Peru, Ottawa
		329.6	530.4	59	I-80 – LaSalle, Peru, Chicago, Des Moines	Signed as exits 59A (east) and 59B (west); I-80 exit 79
	Troy Grove	336.8	542.0	66	US 52 – Troy Grove
	Mendota	342.7	551.5	72	US 34 – Mendota, Earlville
Lee	Paw Paw	353.1	568.3	82	Paw Paw
		357.9	576.0	87	US 30 – Sterling, Rock Falls, Aurora
	Steward	363.9	585.6	93	Steward
Ogle	Rochelle	368.0	592.2	97	I-88 / IL 110 (CKC) (Ronald Reagan Memorial Tollway) – Moline, Rock Island, Chicago	Signed as exits 97A (east) and 97B (west); I-88 exit 78
	Rochelle	370.1	595.6	99	IL 38 / Lincoln Highway – DeKalb, Rochelle
		375.1	603.7	104	IL 64 – Sycamore, Oregon
	Monroe Center	381.6	614.1	111	IL 72 – Genoa, Byron
Winnebago		386.1	621.4	115	Baxter Road
	Rockford	390.2	628.0		US 20 west – Freeport, Rockford	Southern end of US 20 concurrency
	Cherry Valley	392.7	632.0	122A	US 20 east – Belvidere	Northern end of US 20 concurrency
		392.7	632.0	122B	Harrison Avenue
		393.4	633.1		I-90 east (Jane Addams Memorial Tollway) – Chicago	Southern end of I-90 concurrency; I-39/US 51 uses I-90's exit numbers from here north; exit 17 on I-90
	Rockford	395.1	635.9	15	US 20 Bus. (State Street)	Last free exit northbound
	Rockford	398.4	641.2	12	Riverside Boulevard	Toll on northbound exit and southbound entrance
	Machesney Park	401.9	646.8	9	IL 173 (West Lane Road)	Toll on northbound exit and southbound entrance
	Rockton	407.3	655.5	South Beloit Toll Plaza
	South Beloit	408.1	656.8	3	CR 9 (Rockton Road)	Last free exit southbound
		414.0	666.3	1	I-39 north / I-90 west – Madison IL 75 east	Northern end of I-39/I-90 concurrency; southern end of IL 75 concurrency
		415.6	668.8		IL 75 west / IL 251 south – Freeport, Rockford	Northern end of IL 75 concurrency; northern terminus of IL 251
		415.95	669.41		US 51 north – Beloit	Continuation into Wisconsin
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Tolled

gollark: As I said, we live in a society.

gollark: They would never *reduce* fees probably.

gollark: We really do live in a society.

gollark: I see. Clearly I misremembered slightly.

gollark: I see.

References

Illinois Technology Transfer Center (2007). "T2 GIS Data". Illinois Department of Transportation. Retrieved November 8, 2007.
"Illinois Supplemental Freeway system proposal" (PDF). Retrieved February 17, 2015.
"US 51 Environmental Impact Statement". Illinois Department of Transportation. Retrieved February 17, 2015.
Google (March 19, 2017). "Overview Map of US 51" (Map). Google Maps. Google. Retrieved March 19, 2017.

External links

Media related to U.S. Route 51 in Illinois at Wikimedia Commons

U.S. Route 51
Previous state: Kentucky	Illinois	Next state: Wisconsin

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[t2-1] Illinois Technology Transfer Center (2007). "T2 GIS Data". Illinois Department of Transportation. Retrieved November 8, 2007.

[2] "Illinois Supplemental Freeway system proposal" (PDF). Retrieved February 17, 2015.

[3] "US 51 Environmental Impact Statement". Illinois Department of Transportation. Retrieved February 17, 2015.

[Google_Maps-4] Google (March 19, 2017). "Overview Map of US 51" (Map). Google Maps. Google. Retrieved March 19, 2017.