Where can I find highway incline and decline percentages for motorhome travel planning?

Question

Interested in US highways

Answer 1

Each State has a dept. of transportation, call them and ask if they have maps of the percentages and/or a web site with virtual terrain features, kind of like google earth! Don't worry about traveling in the mountains of Wyoming,Colorado & Montana, it's simple,---you'll use a ton of gas and a ton of cash! Have fun!