I’d argue that access drinking water is even more of a human right and a human necessity than access to roads, but while our society pools resources to provide access to clean drinking water* we still don’t provide individual citizens with unlimited water for free. I don’t think that makes our municipal water systems “libertarian.”
For public roads, like other public services, it’s less a question of “should we pool our resources to provide this social good?” than a question of “how do we keep this pool filled?”
(*Exceptions apply for certain residents of Michigan)