Illinois Route 115
|Maintained by IDOT|
|Length:||63.37 mi (101.98 km)|
|Existed:||1924 – present|
|South end:||IL 9 in Elliott|
|US 24 in Piper City|
|North end:||US 45 / US 52 in Kankakee|
Illinois Route 115 is a minor north–south road in northeastern Illinois. It runs from Illinois Route 9 near Perdueville to the concurrent U.S. Routes 45/52 in Kankakee. This is a distance of 63.37 miles (101.98 km).
Illinois 115 is a north–south highway from Perdueville to Buckingham; at Buckingham, it turns east but is still marked north–south. South of Kankakee, Illinois 115 turns north again on its way into Kankakee.
Illinois 115 is an undivided two-lane surface road for its entire length.
SBI Route 115 ran from near Kankakee to Perdueville along what is Illinois 115 now. In 1954, when U.S. 45 was moved onto a new road, Illinois 115 was extended north into Kankakee onto old U.S. 45.