Illinois State Route 84 is the main surface route through eastern Rock Island County. Much of the northern portion of the route runs along the eastern banks of the Mississippi River. IL St Rt 84 passes through the following towns in Rock Island County. Cordova
Port Byron
Rapids City
Hampton
East Moline
Silvis
Carbon Cliff IL St Rt 84 is multi-plexed in Rock Island County. The Great River Road, from East Moline to the Whiteside/Rock Island County Line. Illinois State Route 92 near Sivis.
NB IL St Rt 84 at the Henry/Rock Island County Line. A BGS on WB IL St Rt 5/92. NB IL St Rt 84/WB IL St Rt 92 in Silvis. A junction marker on NB IL St Rt 84/WB IL St Rt 92. NB IL St Rt 84 north of Hampton. NB IL St Rt 84 south of I-80. A BGS on WB I-80. A BGS on WB I-80. SB IL St Rt 84 in Port Byron. A Rock Island County mile marker. SB IL St Rt 84 north of Cordova.
