I made a google map page on my website which has a fullscreen map of the AT as well as the PCT and CDT. You may find this helpful when looking for road crossings. This way, you can not only access road maps, but you can also view topo maps, satellite images, and more. While I can't guarantee you on the accuracy, I think it is a pretty good map over all. Let me know what you think and be sure to sign the guestbook.
My wife and I leave for Spring in 1 week! We are so very excited.
www.fivemillionsteps.com
Just click on the "Map of Long Trails" link. Let me know if I can add something that would make this map more useful.
-Josh