Illinois State Route 89 is the longest north-south highway in Putnam County. It runs along the eastern edge of the county. IL St Rt 89 passes through the following town in Putnam County. Mc Nabb
IL St Rt 89 is not multi-plexed in Putnam County. IL St Rt 89 intersects the following highways in Putnam County. Illinois State Route 71, near Granville.
SB IL St Rt 89 south of the Illinois River. SB IL St Rt 89 near Granville. Junction sign on IL St Rt 71. SB IL St Rt 89 north of Mc Nabb. SB IL St Rt 89 in Mc Nabb. SB IL St Rt 89 near IL St Rt 18. SB IL St Rt 89 near the Putnam/Marshall County Line.
