Hence, one of the reasons why I'm going to visit one of the offices to obtain the "up to date" map and regulations.
I think the point is... there isn't any "up to date map". As others have posted, that was a proposal that wasn't adopted. The USGS 24k topo map was a benchmark that was suggested during those discussions.
If the road is on topo it's legitimate,of course half of those are gone and there are some new roads that are totally viable
Those 24k topos were discontinued twenty years ago but many of them haven't been revised for 50 years or more. The USGS has now disavowed them and considers them as "historical documents" instead of "maps".
As for the "regulations", they are all available here: