History and details of these unusual service areas.

Supports a four-lane highway running from Peoria to Macomb.

A guide to the roads and highways around Cape Girardeau, Missouri including roads in southern Illinois.

Website of Citizens Against the Privatized Illiana Tollroad, regarding the proposed east-west facility running through the southeast outskirts of metropolitan Chicago.

Contains relevant news articles from the late 1920s and early 1930s.

Covers the history of the system in Cook County, including Chicago.

Offers news, real time traffic information and weekly bulletins, projects and programs, and information on bureaus of highways, streets, traffic, signs and markings, bridges and transit, inspections, and administration and planning.