Illinois 122 is a short east-west route. If you draw a triangle from Bloomington, to Peoria, to Springfield, and back to Bloomington again, IL122 would run completely within that triangle (more or less).
Intersections from west to east:
IL122 joins I-155 north
Then it breaks off I-155 and heads east...
To eventually terminate at IL9.
It passes through these towns: Delavan, Hopedale, Minier.