There are 7 rest areas and service plazas mapped on I-80 in Illinois. 3 serve eastbound traffic, 2 serve westbound, and 2 have no direction recorded. Restrooms are confirmed at 6 of them and truck parking at 0. Going eastbound the longest gap between I-80 rest areas in Illinois is 66 miles, and going westbound the longest gap between I-80 rest areas in Illinois is 68 miles. Plan breaks around those stretches, especially at night.