Just found this site and am excited about it. I downloaded "Southwest USA". I live in Moab, UT (eastern Utah) and found the following quads where I live have no roads or railroads. I think they contain all the rest of the data except these items.
1. USA_30381091
2. USA_30381092
3. USA_30391093
4. USA_30391094
Is this just an oversight of incomplete merging of the data?
Dave
The Utah topo map by IndyJrp, available through the gpsfiledepot or his misjunk site, contains roads and trails from Utah DOT. These are much better than what is available in the Census files and has most/all of the 4wheel-drive trails in the Moab area.