Roads are a fundamentally important input in trucking businesses, gas stations, rest stops, and through these, basically every good ever sold. Just because you don't have to think about it because it seems "free" doesn't mean it's actually free or unimportant.
As others have said, "socialism" isn't an all-or-nothing thing that needs to be desperately fought. It's not a slippery slope, it's just a regular scale that you can adjust on a case-by-case basis. Socialized roads make great sense. Socialized police at better than private police for society. Socialized medicine would be a great bonus in my mind, economically and from a human welfare point of view. On the other hand, government businesses aren't going to respond as quickly to market changes private firms, so I'm not in favor of socializing computer production, for instance. On the other hand, some industries DO belong in semi-government control (really, just heavily regulated private control), in particular utility companies that have natural monopolies.
I really look forward to the day when the Cold Warriors have all died off and we can have a public conversation in this country about working together on particular things without instant resort to antiquated rhetoric from an ideological conflict that doesn't apply today.