here may be half or more than half are gravel. but those are with low load to it. like, roads for forest maintenance/upkeep, or in countryside. we have like one big city, next one is around 75k in size. basically sparsely populated.  in spring and autumn, when there are a lot of rain, heavy equipment gets restrictions to use those. to not to fuck it way to much. if not mistaken, for equipment heavier than 10 tons.
Latvia