I was in the Army stationed at Fort Belvoir, VA. I drove home several times a year and I remember driving I70 out of Indy, to I79, to I68, to (I70 again), and then I270 around DC and to Alexandria, VA. It was a 10 hour trip one way and it was in the family car, not towing anything. Roads don't change, they only get pot-holes! It was a good route as I remember. We've been back to DC a few times, but by different routes going North or South on the Eastern Seaboard.
Suggestion: Throw out the computer and use a paper map. Makes better sense. Then compare with the electronic version.