Illinois Route 121

Route map:
Source: Wikipedia, the free encyclopedia.

Illinois Route 121 marker

Illinois Route 121

Map
IL 121 highlighted in red
Route information
Maintained by IDOT
Length109.48 mi[1] (176.19 km)
Existed1924[2]–present
Major junctions
South end IL 130 in Greenup
Major intersections
North end I-55 / IL 10 in Lincoln
Location
CountryUnited States
StateIllinois
CountiesCumberland, Coles, Moultrie, Macon, Logan
Highway system
← IL 120→ IL 122

Illinois Route 121 (IL 121) is a 109.48-mile-long (176.19 km) major

state highway in the central part of the U.S. state of Illinois. Although it travels from northwest to southeast, it is marked as a north–south highway.[3] It travels from IL 130 in Greenup (very near U.S. Route 40) to Interstate 55 (I-55) in Lincoln at the interchange of I-55 and IL 10
.

Route description

IL 121 travels north from Greenup near

I-57 in Mattoon
.

From there, it travels northwest into the

I-72 and US 51
.

IL 121 continues further northwest into Lincoln, where it has a concurrency with IL 10 through Lincoln as Keokuk Street and Woodlawn Road before terminating at I-55 just south of I-155. IL 10 continues west on the same road.

History

Truss bridge at former IL 121, west of I-155

State Bond Issue (SBI) Route 121 formerly traveled from Peoria to the Indiana state line east of Chrisman. When US 36 was established in the late 1920s, IL 121 was dropped east of Decatur. In March 1937, IL 121 replaced then IL 131 and IL 132 south of Decatur to Greenup.[4]

In 1993, I-155 north of Lincoln was completed. IL 121 was then dropped from this stretch of freeway.

IL 121 had a business route through Decatur until about 1980 along Main Street and Water Street. This was replaced by US 51 Business.[2]

Major intersections

CountyLocationmi[5]kmDestinationsNotes
CumberlandGreenup0.00.0 IL 130
​19.030.6
 US 45 south		South end of US 45 concurrency
I-57 – Effingham, Champaign
I-57 exit 184
27.444.1
 IL 16 east – Charleston		South end of IL 16 concurrency
27.444.1
 IL 16 west – Shelbyville		North end of IL 16 concurrency
28.045.1
 US 45 north – Arcola		North end of US 45 concurrency
MoultrieSullivan44.471.5
 IL 32 south – Effingham		South end of IL 32 concurrency
​45.873.7
 IL 32 north – Lovington		North end of IL 32 concurrency
Dalton City58.894.6
 IL 128 south – Shelbyville
MaconDecatur67.3108.3
 US 36 east – Tuscola		South end of US 36 concurrency
70.4113.3

 US 36 west / IL 105 west – Springfield		North end of US 36 concurrency; south end of IL 105 concurrency
70.6113.6
 IL 105 east – Monticello		North end of IL 105 concurrency
72.7117.0
 IL 48 north – Argenta		South end of IL 48 concurrency
74.3119.6
US 51 Bus. north (Water Street) – Bloomington, Clinton
One-way pair
74.4119.7
US 51 Bus. south (Main Street) – Macon, Pana
One-way pair
75.3121.2
 IL 48 south – Taylorville		North end of IL 48 concurrency
77.5124.7 I-72 / US 51 – Springfield, Pana, Champaign, BloomingtonI-72 exit 138
Mt. Pulaski
94.3151.8
 To IL 54 – Clinton, Springfield
Lincoln105.5169.8
 IL 10 east – Clinton		South end of IL 10 concurrency
105.9170.4
I-55 BL north (Kickapoo Street) / Historic US 66
east		1930-1940 Historic US 66
106.1170.8
I-55 BL south (Logan Street) / Historic US 66
west		1930-1940 Historic US 66
107.6173.2 Historic US 66 (Lincoln Parkway)
109.48176.19

 I-55 to I-155 north – Bloomington, Springfield, Peoria

 IL 10 west – Mason City		Northern terminus; north end of IL 10 concurrency; I-55 exit 126
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. ^ Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08.
  2. ^ a b Carlson, Rich. Illinois Highways Page: Routes 121 thru 140. Last updated March 15, 2005. Retrieved May 9, 2006.
  3. ^ Sarjeant, Charles. Illinois 121 Archived 2011-09-06 at the Wayback Machine. Retrieved May 9, 2006.
  4. Newspapers.com. Open access icon
  5. ^ Google (March 2, 2017). "Overview Map of IL 121" (Map). Google Maps. Google. Retrieved March 2, 2017.

External links

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Template:Attached KML/Illinois Route 121
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