Illinois State Route 68 runs east-west across the east-west across the northern portion of Cook County. This highway is Cook Counties northern most east-west highway. IL St Rt 68 passes through the following towns in Cook County. Northbrook Wheeling
Buffalo Grove Arlington Heights
Palatine Inverness Barrington Hills IL St Rt 68 is multi-plexed in Cook County. Illinois State Route 53, at Palatine.
EB IL St Rt 68 at the Cook/Kane County Line. EB IL St Rt 68 in Barrington Hills. A guide marker on EB IL St Rt 62/68. WB IL St Rt 62/68 in Barrington Hills. A set of markers on SB IL St Rt 59/WB IL St Rt 68. A junction marker on SB IL St Rt 59. WB IL St Rt 68 in Barrington. WB guide marker. A BGS on NB IL St Rt 53. EB IL St Rt 68 east of IL St Rt 43 in Northbrook. A BGS on WB I-94/NB U.S. Rt. 41. The eastern end in Northbrook. The eastern end marker.
