Illinois State Route 176 runs east-west across Southern Mc Henry County. This runs from the Lake/Mc Henry County Line, at Island Lake, to Illinois State Route 23, at Marengo. IL St Rt 176 passes through the following towns in Mc Henry County. Island Lake Burtons Bridge Praire Grove
Crystal Lake Marengo IL St Rt 176 is multi-plexed in Mc Henry County. Illinois State Route 47, near Woodstock.
IL St Rt 176 intersects the following highways in Mc Henry County. Illinois State Route 31, at Crystal Lake.
A junction marker on NB IL St Rt 31. WB IL St Rt 176 in Crystal Lake. EB IL St Rt 176 west of IL St Rt 31. EB IL St Rt 176 east of Park in Crystal Lake. A street sign in Crystal Lake. EB IL St Rt 176 near Main Street in Crystal Lake. WB IL St Rt 176 near U.S. Rt. 14. A junction marker on WB U.S. Rt. 14. NB IL St Rt 47/WB IL St Rt 176 north of east IL St Rt 176. A guide marker on SB MCH T68. A Mc Henry County mile marker. WB IL St Rt 176 near Marengo. A junction marker on SB IL St Rt 23. A street sign on SB IL St Rt 23. The western end of IL St Rt 176 in Marengo. The western end marker.
