If interested in heading the other direction. Fishlipsatwork has done a DEM based map from Jefferson City heading East along the river to St Louis. Another one from St Louis North to Hannibal. And a third East from Hannibal to Springfield Illinois. I had requested a map to link Jeff City to Kansas City, or Kanas City due East to Central Missouri, but he retired from Trainz before he could get to it. He really did a great service to the Trainz Community when he generated all of those maps for us to work with.
There is another Missouri map, from the early Trainz days, called "MixedFreight30" by Woodbrdge available on the download station. It is based on a DEM map from Centralia to Columbia, MO and covers the old Wabash line.
I have downloaded "Kansas City" by John Keenan from Trainz Pro Routes as described earlier in this thread, but I think that it was available in the "goodies" section of their forum and I have not been able to successfully download anything from there in months. The Download Depot at TPR works just fine though. The map covers the industrial area in KC and has a few assets that no one has been able to find. It looks like the download has been deleted from the thread, but he did publish them there as public domain.