As to earlier discussion in this thread regarding US 41 across Indiana, it is a great example of how not to build or maintain an expressway. A pity IDOT didn't and will not upgrade IL 1 to provide a rival facility.
Are you kidding me? IL 1 from Crete to Danville and from I-70 south is very desolate, and an upgrade never made sense. Also, there is the fact that Illinois is nearly bankrupt, and an IL 1 upgrade would be far from the top of the list of needs there. The US 41/SR 63 corridor in Indiana is adequate and is really only bad in Terre Haute. When SR 641 is done, it will be the four miles from I-70 north to SR 63 that are awful.
In Evansville, I-164 is four miles east and is the primary north-south highway built to bypass US 41. There is no need to upgrade this part of US 41, IMO.
So taking US 41/SR 63 from I-64 to the proposed Illiana Expressway, except for Terre Haute is far from the worst expressway. It is generally a pretty enjoyable drive that has approximately 18 interchanges.