Illinois State Route 121 runs east-west across Moultrie County. This highway connects the west and east sections of the Shelbyville Wildlife Management Area. IL St Rt 121 passes through the following towns in Moultrie County. Bethany
NB IL St Rt 121 at the Coles/Moultrie County Line. NB IL St Rt 121 near Allenville. NB IL St Rt 121 north of Allenville. NB IL St Rt 121 at the Kaskaskia River. NB IL St Rt 121 east of Sullivan. NB IL St Rt 121 near Worth Street in Sullivn. NB IL St Rt 121 at south IL St Rt 32. The Moultrie County Courthouse in Sullivan. This is about one block south of IL St Rt 121. WB IL St Rt 121 at IL St Rt 32 in Sullivan. NB IL St Rt 32/WB IL St Rt 121 west of Sullivan. NB IL St Rt 32/121 at north IL St Rt 32. NB IL St Rt 121 west of IL St Rt 32. NB IL St Rt 121 north of north IL St Rt 32. NB IL St Rt 121 west of the Okaw River. NB IL St Rt 121 west of Dunn. NB IL St Rt 121 west of Bethany. NB IL St Rt 121 at Bethany. NB IL St Rt 121 west of Bethany. NB IL St Rt 121 near Dalton City. NB IL St Rt 121 at IL St Rt 128. NB IL St Rt 121 near the Macon/Moultrie County Line. SB IL St Rt 121 at the Macon/Moultrie County Line.
