We despise pulling our trailer on rough roads and have always wished we could know the condition of a road before we choose a route. Sometimes we get lucky and the road we choose is smooth and sometimes we strike out.
I certainly wish there was one, we followed a recommended road through NM, TX, OK, KS. Several fellow campers said how much faster it was, lower miles and a good road. Well they must not have been on it for years, the first 15 miles were great, nice black top, after that I think our top speed was 45. The road was horribly rough. What bothered me most was, if something happened we were out in the middle of nowhere! It cut miles off the trip at the cost of slower driving and rough roads.