Please listen to Isaac Moreno Gallo. 99% of the Roman Roads had no big stones on it. Only near big cities you have the stone pavement, basically in the cemetery that was outside town alongside the road.
People with very little idea about engineering wrote the textbooks of the past and some of the wrong ideas are transmitted even today.
[1] https://itiner-e.org/
Please listen to Isaac Moreno Gallo. 99% of the Roman Roads had no big stones on it. Only near big cities you have the stone pavement, basically in the cemetery that was outside town alongside the road.
People with very little idea about engineering wrote the textbooks of the past and some of the wrong ideas are transmitted even today.