Illinois State Route 84 runs north-south in the northwestern part of the county. It runs near the Quad-City Metro Area. IL St Rt 84 passes through the following town in Henry County. Colona
IL St Rt 84 is not multi-plexed in Henry County. IL St Rt 84 intersects the following highway in Henry County. U.S. Rt. 6, near Colona.
NB IL St Rt 84 in Colona. NB IL St Rt 84 north of U.S. Rt. 6. The southern end marker.
