Illinois/Resources/Main Discussion View history

• Functional Classification Maps by County (PDF)
• Functional Classification for entire State (Interactive)

• General Highway Maps for cities and counties from IDOT

• Illinois Virtual Tollway

• USGS National Map Viewer (sometimes quite out of date)
• 2011 Boundary and Annexation Survey Maps from US Census Bureau

City of Chicago

• Interactive map showing speed and red light camera placement
• List of red light cameras