driving from death valley to monument valley (or vice versa)

Google Maps shows the roads are all good. Advice - Next time you're at a truck stop pick up a copy of the Motor Carriers' Atlas. It shows all the highlighted routes in the US approved for 18 wheelers. FWIW, I've been all over the US and haven't found a road we couldn't navigate. Yes there were some we were sorry we were on but we still got through.