Mississippi is complete. Finding the route the Vicksburg was a several-hour maze.
Version 3 is now official. Mississippi gets an A+ from me. All the MRT signs have been replaced as of a few months ago, and the route was altered slightly, namely a little jog before Greenville, and an extra block in Vicksburg. I've added those corrections here and tried to fix the weird issue I have with disappearing via points I have with a couple of my GPS units.