EV drivers use Plugshare.com, or their car's navigation tools, to find charging stations, especially the Level 3 fast chargers. Her is a snapshot of the charging stations available from Atlanta to Moline. Please bear in mind that because charging stations do not have the huge presence that gas stations have (due to storage of toxic, flammable fuel) that you can pass right next to a charging station and not even know it was there.
The orange bullets are Level 3 fast charging facilities. The green bullets are the slower Level 2 which is generally free for use. Anything is a wrench symbol are chargers under construction. PlugShare includes a popup window for every bullet point that gives directions to the site, number and type of charge plugs, any costs to use, and user "check-in" comments regarding the charging facilities. Many were built out long before the federal interstate got on board with starting to include EV facilities. So, by default, many on this map are just off the interstate. Not what our time-centric driving public is used to having, but still available if one wants to use an off ramp. The federal highway commission is very reluctant to have any private business intrude on their turf, so the build out of EV charging had to have the backing of big enough enterprises (EVgo, Electrify America, Tesla) to cover vast miles of interstate with chargers. Plus they were constrained to be sited where there were already fueling facilities that, on whole, are usually spaced at 50 miles apart.
I could snapshot other maps of the charging available for each of your trips, but I'm guessing you get the idea from the above. Incidentally, I did not include Tesla charging stations in this map. Otherwise it would have been nothing but a solid pic of bullet points.
And yes, you are right - the infrastructure needed for tomorrow's electric based transportation still has a long way to go. The government works at a snail's pace, but with the recent Green Infrastructure bill just enacted, hopefully that snail will move just a bit quicker in the much needed build out on the nation's interstates. Least we forget it took Eisenhower to enact legislation in 1956 to actually have an interstate highway system built (through 1969 at the cost of $25 billion in 1950 currency), long long after cars had already become popular (1920s) and had been traversing the country for years. And he had to do it under the banner of national defense. Fuel companies, if they wanted to be the ones to have a golden opportunity to sell fuel to travelers, had to procure a federal contract to build gas stations on the route, were highly regulated via price and standard of facilities, and had to include restroom facilites as well. Only the big dogs had enough capital to play.
Just 2 years ago this snapshot of Plugshare (online app debuted in 2011) would have had only 1/3 of these charging stations. The electrification is following the exact same footsteps of the gas stations in the 1940s and 50s of being in towns and cities enroute. We've already come a long way, as the snail crawls, with an interstate presense, with a long road still to go.