Illinois Route 104

The Illinois State Route 104 ( IL 104 short ) is a state highway in the U.S. state of Illinois, which runs in an east - west direction.

The State Route begins in Downtown Quincy and ends north of Taylorsville at Illinois State Route 29 Earlier, the IL 104 from Mount Sterling to Taylorsville. The old section belongs since 1937 to the Illinois State Route 99