 At Cumberland, it picked up the old National Road to Vandalia, Illinois, which was already marked as part of the National Old Trails Road.It continued to follow that auto trail near Fulton, Missouri, and then followed a different route across the rest of that state, passing through Jefferson City on its way to Kansas City.The highway continued west from Kansas City to Denver over the Golden Belt Highway, and then ran via Salt Lake City, across the Great Salt Lake Desert on the Wendover Cut-off and into Nevada.