Thanks---I found the site to calculate the fees. From what I've seen, this might be an alternative for travel south.
We don't have toll roads here in the frozen North Idaho area, so I'm not familiar with how they work. Our roads are "paved - unpaved."
Also, from what I've gathered, the toll roads around the U.S. don't have a real agreement for a pass that can be used freely across the states. Maybe Congress could address issues like this, but I'm sure they have more "important" things to do.
Thanks again........