Did you know that some roads in Buffalo Grove are owned and maintained by Cook County (CCDOTH), Lake County (LCDOT), or the State of Illinois (IDOT):

The following roads are outside the jurisdiction of the Village of Buffalo Grove and therefore are owned and maintained by the County they are located in, or the State, which hinders the authority of the Village regarding improvements and/or regulating access during construction, as well as signage. Any and all questions, problems, or concerns should be directed towards the appropriate agency. 
Do you have questions related to specific construction projects?

Cook County Department of Transportation and Highways Jurisdiction (CCDOTH):

  • Lake Cook Road Project
  • Arlington Heights Road (South of Lake Cook Road)
  • Buffalo Grove Road (South of Lake Cook Road)
Cook County Logo Website 20
(847) 827-1164

Lake County Department of Transportation (LCDOT) Jurisdiction:
Lake County Logo Website 20
(847) 377-7400

  • Illinois Department of Transportation (IDOT) Jurisdiction:
  • Dundee Road (Rt. 68)
  • Half Day Road (Rt. 22)
  • McHenry Road (Rt. 83)
  • Milwaukee Avenue (Rt. 45/Rt. 21)
  • Old Arlington Heights Road (maintained by Arlington Heights)
IDOT Logo - Website
(800) 452-4368

Submit an issue found on an IDOT road here.
You will be taken to the IDOT website to complete this form.
Do you have questions related to specific construction projects?
If you don't know which agency maintains a given road, visit the Jurisdictional Boundaries map in our Community Portal. You can enter your address, or a nearby location, to discover which agency owns and maintains the road. 


arlington heights rd pic
lake cook rd pic
mchenry pic
n buffalo grove rd pic