Official site of the company that now leases the toll route in southeast Chicago. Site includes history and toll information.
Covers the history of the system in Cook County, including Chicago.
Entry from the Encyclopedia of Chicago. Gives historic background and includes a map.
The official site of the department. Includes information on construction projects and information about doing business with the department.
A guide to the origin and evolution of the numbered system. Includes route logs and other trivia.
History and details of these unusual service areas.
Contains resources related to this scenic drive around the lake.
Contains relevant news articles from the late 1920s and early 1930s.
Organization promoting this scenic route in Fulton County which was the setting of Edgar Lee Master's "Spoon River Anthology". Contains maps and other information.
Information on the system, including the I-Pass electronic toll collection system.
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