Illinois State Route 104 is a east-west highway in Adams County. It runs from the southeastern portion of the county to the west-central. IL St Rt 104 passes through the following towns in Adams County. Liberty Quincy
A BGS on NB I-172. A BGS on NB I-172/IL St Rt 110. WB IL St Rt 104 at I-172/IL St Rt 110. WB IL St Rt 104 west of I-172. WB IL St Rt 104 west of IL St Rt 96. EB IL St Rt 104 east of Downtown Quincy. A junction marker on NB IL St Rt 57. The western end in Quincy. The western end marker.