Roads of the Mid-South & West > Highways of the State of Illinois > Illinois State Route 51-100 > Illinois State Route 99
 | Illinois State Route 99 |  |
Illinois State Route 99 is a north-south highway in Western Illinois. It runs from the Illinois River, near Meredosia, to near Brooklyn. Info on IL St Rt 99 is broken down by county below.
29 December 2010