High Quality Content by WIKIPEDIA articles! An Illinois Tollway oasis is a type of commercialized rest area sited along interstate highways that are toll roads in Illinois, United States. The seven oases offer food and gasoline vendors and are found in the Chicago Metropolitan Area, DeKalb, and Belvidere. Although the oases date back to the original tollway construction in 1958, they were redeveloped in 2003–05 by Wilton Partners, a private developer. The redevelopment of the oases has been the focal point of alleged political corruption. The seven oases are administered by a court-appointed manager following default of their developer, Wilton Partners.