Illinois Route 251
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| Route information | ||||
| Maintained by IDOT | ||||
| Length: | 135.32 mi[2] (217.78 km) | |||
| Existed: | Early 1970s[1] – present | |||
| Major junctions | ||||
| South end: |    I-39/US 51/McLean CR 8 south of Kappa |
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 US 20 in Rockford IL 173 in Machesney Park |
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| To: |  US 51/IL 75 in South Beloit |
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Illinois state highway system
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→Illinois Route 251 is a north–south state road that runs on the former alignment of U.S. Route 51 before Interstate 39 was built in central Illinois. It runs from U.S. 51 at the border with Wisconsin to I-39 and U.S. 51 south of Kappa. Illinois 251 is 135.32 miles (217.78 km) long.[2]
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[edit] Route description
Illinois 251 runs parallel to Interstate 39 and U.S. 51 for most of the length of I-39 in Illinois. Like Illinois Route 351, it can be considered a spur or loop of its parent route, U.S. 51. Illinois 251 terminates about 10 mi (16 km) north of the southern terminus of I-39.
The road parallels the east bank of the Rock River through Rockford, where the highway is a limited access urban expressway (honorary Martin Luther King Jr. Drive)for a couple of miles.
[edit] History
Illinois 251 was established in 1984 when first segment of I-39 opened between Rockford and Bloomington. In 1992, the final segment of I-39 opened north of Bloomington. The remaining stretch of Former U.S. 51 became Illinois 251.[3] The initial designation of I-39 was U.S. Route 51 until 1992.
[edit] External links
[edit] References
- ^ Carlson, Rich. Illinois Highways Page: Routes 200 thru end. Last updated April 15, 2005. Retrieved May 12, 2006.
- ^ a b Illinois Technology Transfer Center (2006). "T2 GIS Data". http://www.dot.state.il.us/gist2/select.html. Retrieved 2007-11-08.
- ^ AARoads. Interstate 39 @ Interstate-Guide.com.
