U.S. Route 51 in Illinois
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U.S. Route 51 in Illinois

U.S. Route 51 marker

U.S. Route 51
Route information
Maintained by IDOT
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 / / near Wickliffe, KY
 

near Cairo
near Richview
at Vandalia
at Decatur
/ / at Bloomington/Normal
at La Salle
at Rochelle
at Rockford

/ at South Beloit
North end at the Wisconsin state line in South Beloit
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

CountyLocationmi[4]kmExitDestinationsNotes
AlexanderCairo0.00.0 south / east / east - WickliffeUS 51/US 60/US 62 continue into Kentucky
0.20.32 west / west - CharlestonNorthern end of US 60/US 62 concurrency
4.57.2 north - Mound CitySouthern terminus of IL 37
5.38.51 south / north - Olive Branch, MemphisSouthern end of I-57 concurrency; southern terminus of IL 3
Pulaski11.418.38Mounds Road
21.434.418Ullin Road
UnionDongola28.245.424Dongola Road
28.846.325 north - ChicagoNorthern end of I-57 concurrency; northbound exit and southbound entrance
Anna36.057.9 - Jonesboro, Vienna
JacksonCarbondale55.088.5 - Murphysboro, Marion
De Soto61.398.7 - Murphysboro, Hurst
PerryDu Quoin72.4116.5 east - ChristopherWestern terminus of IL 14
75.5121.5 west - PyattsEastern terminus of IL 152
Sunfield80.4129.4 - Red Bud, Sesser
WashingtonAshley98.0157.7 west - East St. LouisWestern end of IL 15 concurrency
100.9162.4 east - Mount VernonEastern end of IL 15 concurrency
Richview105.7170.1 - St. Louis, LouisvilleExit 61 on I-64
Irvington109.6176.4 west - BellevilleWestern terminus of IL 177
MarionCentralia116.2187.0 - New Baden, Kell
Sandoval122.7197.5 west - CarlyleWestern end of US 50 concurrency
123.0197.9 east - SalemEastern end of US 50 concurrency
FayetteVandalia146.9236.4 east / east - Bluff CityEastern end of US 40/IL 185 concurrency
148.5239.0 west / west - Taylor Springs, Mulberry GroveWestern end of US 40/IL 185 concurrency
148.7239.3 - St. Louis, IndianapolisExit 63 on I-70
ChristianPana178.1286.6 westWestern end of IL 16 concurrency
178.6287.4 northSouthern terminus of IL 29
180.2290.0 eastEastern end of IL 16 concurrency
Macon207.3333.6
north
211.2339.9
Harristown214.7345.5133 west /  - Springfield, TuscolaSouthern end of I-72 concurrency; signed as exits 133A (east) and 133B (south)
Decatur219.2352.8138 - Decatur, Lincoln
222.2357.6141
east / south - Champaign, Urbana, Decatur
Northern end of I-72 concurrency
DeWittClinton237.9382.9
north - Clinton
239.5385.4
240.0386.2
242.0389.5
south - Clinton
McLeanHeyworth251.9405.4 - McLean, Rantoul
260.5419.2135
east / north (Main Street) - Indianapolis, Bloomington
Southern end of I-74 concurrency
262.2422.0157A south - St. LouisSouthern end of I-55 concurrency
Bloomington262.4422.3157B north (Veterans Parkway)Signed as exit 134B (north) southbound
265.5427.3160 / (Market Street) - Pekin
269.1433.1163 west - PeoriaNorthern end of I-74 concurrency
270.3435.0164 north / north - ChicagoNorthern end of I-55 concurrency; southern end of I-39 concurrency; southern terminus of I-39
272.1437.92
south - Bloomington, Normal
Hudson275.2442.95Hudson
278.3447.98 (Lake Bloomington Road)
WoodfordEl Paso284.9458.514 - El Paso, Peoria
Woodford292.9471.422 - Peoria, Pontiac
Minonk297.5478.827Minonk
MarshallWenona305.6491.835 - Lacon, Wenona
LaSalleLostant312.2502.441 - Henry, Streator
Tonica319.2513.748Tonica
322.3518.751 - Hennepin, Oglesby
323.0519.852 - Peru, LaSalle
Oglesby324.4522.154Oglesby
Illinois River326.5525.5Abraham Lincoln Memorial Bridge
La Salle327.3526.757 - LaSalle, Peru, Ottawa
329.6530.459 - LaSalle, Peru, Chicago, Des MoinesSigned as exits 59A (east) and 59B (west)
Troy Grove336.8542.066 - Troy Grove
Mendota342.7551.572 - Mendota, Earlville
LeePaw Paw353.1568.382Paw Paw
357.9576.087 - Sterling, Rock Falls, Aurora
Steward363.9585.693Steward
OgleRochelle368.0592.297 / (Ronald Reagan Memorial Tollway) - Moline, Rock Island, ChicagoSigned as exits 97A (east) and 97B (west)
370.1595.699 - DeKalb, Rochelle
375.1603.7104 - Sycamore, Oregon
Monroe Center381.6614.1111 - Genoa, Byron
Winnebago386.1621.4115Baxter Road
Rockford390.2628.0 west - Freeport, RockfordSouthern end of US 20 concurrency, I-39/US 51 southbound exits US 20 via exit 97
Cherry Valley392.7632.0122A east - BelvidereNorthern end of US 20 concurrency
392.7632.0122BHarrison Avenue
393.4633.117 east (Jane Addams Memorial Tollway) - ChicagoSouthern end of I-90 concurrency; I-39/US 51 uses I-90's exit numbers from here north
Rockford395.1635.915
(State Street)
Last free exit northbound
398.4641.212Riverside BoulevardToll on northbound exit and southbound entrance
Machesney Park401.9646.89 (West Lane Road)Toll on northbound exit and southbound entrance
Rockton407.3655.5South Beloit Toll Plaza
South Beloit408.1656.83Rockton Road (CR 9)Last free exit southbound
414.0666.31 north / west / east - South Beloit, MadisonNorthern end of I-39/I-90 concurrency; eastern end of IL 75 concurrency
415.6668.8 west / south - Freeport, RockfordWestern end of IL 75 concurrency; northern terminus of IL 251
415.95669.41 north - BeloitContinuation into Wisconsin
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ^ a b Illinois Technology Transfer Center (2007). "T2 GIS Data". Illinois Department of Transportation. Retrieved 2007. 
  2. ^ "Illinois Supplemental Freeway system proposal" (PDF). Retrieved 2015. 
  3. ^ "US 51 Environmental Impact Statement". Illinois Department of Transportation. Retrieved 2015. 
  4. ^ Google (March 19, 2017). "Overview Map of US 51" (Map). Google Maps. Google. Retrieved 2017. 

External links


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

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

U.S._Route_51_in_Illinois
 



 

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