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Illinois Route 2

From Wikipedia, the free encyclopedia

Illinois Route 2 marker

Illinois Route 2
IL 2 highlighted in red
Route information
Maintained by IDOT
Length73.91 mi[2] (118.95 km)
ExistedNovember 5, 1918[1]–present
Major junctions
South end IL 40 in Sterling
  US 52 / IL 26 in Dixon
US 20 in Rockford
North end WIS 213 at South Beloit
CountiesWhiteside, Lee, Ogle, Winnebago
Highway system
IL 1IL 3

Illinois Route 2 (IL 2) is a north–south state road in northern Illinois. It currently starts at Illinois Route 40 in Sterling and ends at the Wisconsin state line in South Beloit, very near the intersection with U.S. Route 51, Illinois Route 75 and Illinois Route 251.[3] Illinois 2 is 73.91 miles (118.95 km) long.[2]

Route description

Illinois 2 used to follow the Rock River from Rock Island to South Beloit. It was used in the 19th century as a primary trading route from Rockford to Rock Island, The Rock River was not used as a trading route for boats as it is only navigable west of Rock Falls.

Illinois 2 has since been superseded by Interstate 39 and Interstate 88 for most ground transportation, but the original route remains.

In Sterling, IL 2 begins as a one-way pair. Near the Sinnissippi Mounds, the two one-way roads merge into a two-way road. From Sterling to Dixon, IL 2 largely follows a portion of Lincoln Highway but with one exception. Lincoln Highway branches off northeast to Palmyra and then back southeast to IL 2 just northwest of Dixon. Just north of Dixon, both routes run concurrently with US 52 and IL 26. They then cross the Rock River to get to downtown. In downtown, IL 2 branches off northeast from the other three routes.

At Grand Detour, IL 2 transitions from following the south/east bank of Rock River to the north/west bank via a bridge. Further north, it passes through Castle Rock State Park, IL 64 at the Ogle County Courthouse in Oregon, and IL 72 in Byron (runs concurrently with IL 2). North of the Chicago Rockford International Airport, IL 2 turns north. At this point, it largely parallels IL 251 for the rest of the route which is east of the river. It then meets US 20 at a diamond interchange (formerly a cloverleaf interchange).

As IL 2 gets closer to downtown Rockford, another split occurs. Northbound traffic continues on Main Street, then east on Chestnut Street (US 20 Business), then north on Wyman Street, then west on Park Avenue near the site of Beattie Park Mound Group, and then back north on Main Street before merging. Southbound traffic has to turn west onto John Street, then south on Church Street, and then east on Cedar Street before merging.

In Rockton, IL 2 transitions from the west side of the river to the east side again. Further north, IL 75 runs concurrently with IL 2 from Rockton to South Beloit. Before IL 2 transitions into WIS 213, IL 75 branches out to the east. Then, IL 2 crosses a railroad crossing and then Turtle Creek. It continues further until it reaches the Wisconsin state line.[4]


Sign located in Ogle County
Sign located in Ogle County

SBI Route 2 originally ran from South Beloit to Cairo. It followed a part of current IL 2 from South Beloit to Dixon. It then followed south on (roughly) present-day US 52, IL 251, and US 51.[5] In 1935, US 51 supplanted IL 2 south of Mendota.[6] With the appearance of US 52 in 1936, IL 2 was removed south of Dixon.[7] Then, in 1938, IL 2 was briefly extended to Muscatine, Iowa, replacing IL 84 and IL 86 in the process.[8] It soon got cut back to Rock Island in 1939 after IL 92 was extended to Muscatine.[9][10] By the late 1970s, IL 2 was removed west of Sterling as Illinois Route 5 (now I-88 east of I-80) was extended to Rock Island.[11]

IL 2 was designated a Blue Star Memorial Highway on November 4, 1970. The sign can be found in a wayside just west of the Winnebago County line in Ogle County along the Rock River.

Major intersections

WhitesideSterling0.00.0 IL 40 south (Locust Street) to I-88 / US 30
IL 40 north / Lincoln Highway west (1st Avenue)South end of Lincoln Highway overlap
Freeport Road - PoloState maintained (outside Sterling)
Lincoln Highway east (Prairieville-Palmyra Road) – Prairieville, Gap GroveNorth end of Lincoln Highway overlap; state maintained
Lee Lincoln Highway west (Palmyra Road) – Gap Grove, PrairievilleSouth end of Lincoln Highway overlap; state maintained
Dixon12.319.8 US 52 west / IL 26 north (Galena Avenue) – Savanna, FreeportSouth end of US 52 / IL 26 overlap
12.720.4 US 52 east / IL 26 south / Lincoln Highway east (Galena Avenue) – Mendota, PrincetonNorth end of US 52 / IL 26 / Lincoln Highway overlap
OgleOregon28.646.0 IL 64 (Washington Street)
37.961.0 IL 72 west – Leaf River, ForrestonSouth end of IL 72 overlap
Byron39.263.1 IL 72 east (Union Street) – GenoaNorth end of IL 72 overlap
US 20 to I-39 / I-90 – Freeport, Belvidere
US 20 Bus. east (Chestnut Street) to I-90 – Belvidere
One-block overlap with US 20 Bus. east, northbound only

US 20 Bus. west (Jefferson Street) – Freeport
Rockton69.1111.2 IL 75 west (Blackhawk Boulevard)South end of IL 75 overlap
South Beloit71.4114.9 IL 75 east (Gardner Street) to I-39 / I-90 / US 51North end of IL 75 overlap
71.6115.2 WIS 213 north – BeloitWisconsin state line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ Carlson, Rick. Illinois State Highways Page: Routes 1 thru 20. Last updated March 15, 2006. Retrieved March 24, 2006.
  2. ^ a b c Illinois Technology Transfer Center (2007). "T2 GIS Data". Retrieved 2007-11-08.
  3. ^ Illinois Highway Ends. Illinois 2 Archived 2012-03-09 at the Wayback Machine. Retrieved May 2, 2006.
  4. ^ Google (November 8, 2020). "Overview of IL 2" (Map). Google Maps. Google. Retrieved November 8, 2020.
  5. ^ Illinois Secretary of State; H.M. Gousha (1928). Illinois Official Auto Road Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State – via Illinois Digital Archives.
  6. ^ Illinois Secretary of State; H.M. Gousha (1935). Official Road Map Illinois (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State – via Illinois Digital Archives.
  7. ^ Illinois Secretary of State; Rand McNally (1936). Road Map Illinois (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State – via Illinois Digital Archives.
  8. ^ Iowa State Highway Commission (1938). State of Iowa Transportation Map (PDF) (Map). Ames: Iowa State Highway Commission. Retrieved September 6, 2020.
  9. ^ Illinois Secretary of State; Rand McNally (1939). Illinois Road Map (Map) (1939–1940 ed.). c. 1:918,720. Springfield: Illinois Secretary of State – via Illinois Digital Archives.
  10. ^ Iowa State Highway Commission (1939). State of Iowa Transportation Map (PDF) (Map). Ames: Iowa State Highway Commission. Retrieved September 6, 2020.
  11. ^ Illinois Department of Transportation (1979). Illinois Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation – via Illinois Digital Archives.
  12. ^ Google Maps estimate

External links

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This page was last edited on 15 November 2020, at 03:41
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