For what ever reason, the Illinois Tollway does not have a map showing the locations of their Tollway Oases.

A Tollway Oasis is a rest stop on the Tollway, but all of the restaurants and facilities are on a bridge over the road. All of the highway traffic runs right underneath them. The advantage of this is they only have to build one structure at a location rather than one on each side of the highway.

I made another Google map showing all seven of the Illinois Tollway Oases.