Illinois Route 138

Illinois Route 138 is a state highway in southwestern Illinois. It runs from Illinois Route 159 north of Bunker Hill to the city of Mount Olive at Illinois Street, a former alignment of U.S. Route 66. This is a distance of 14.95 miles (24.06 km).[1]

Illinois Route 138
Route information
Maintained by IDOT
Length14.95 mi[1] (24.06 km)
Major junctions
West end IL 159 in Bunker Hill
  I-55 in White City
East endIllinois Street in Mount Olive
Highway system
IL 137IL 140

Route description

Illinois 138 runs eastwest, with a bend north through the city of Benld. It is a two-lane surface road for its entire length. South of Benld, it also overlaps Illinois Route 4 for a few miles.


SBI Route 138 ran from Mount Carmel to Grayville; in 1937, this became Illinois Route 1. It was put on its current alignment in 1942, replacing parts of Illinois Route 38.[2]

Major intersections

The entire route is in Macoupin County.

0.00.0 IL 159
Benld9.114.6 IL 4 northWest end of IL 4 overlap
9.615.4 IL 4 southSouth end of IL 4 overlap
White City13.822.2 I-55 East St. Louis, SpringfieldI-55 exit 44
14.122.7 Historic US 66
Mount Olive14.9524.06 Historic US 66 (Illinois Street)1930-1940 Historic US 66
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08.
  2. Carlson, Rich. Illinois Highways Page: Routes 121-140. Last updated April 15, 2005. Retrieved May 30, 2006.
  3. Google (March 3, 2017). "Overview Map of IL 138" (Map). Google Maps. Google. Retrieved March 3, 2017.
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