What is the only case when road building would be a trait$/$behaviour that would be selected for in a natural situation?

When the road benefits the builder more than other users

When the road is a significant improvement to the natural surface

When the animal already has the technology, such as using rocks to tamp down dirt, and has learned behaviours to do it$.$

When the road will benefit many, so over time it makes sense to put in the effort and work to build it