If Bachman Road was once intended to be called Pullman Street than the Bachman Road that leads to Old Silent Hill (which becomes Riverside Dr. in Origins) should be correct. However, I think they decided to change names and simlpy forgot to rename Bachman into Riverside in part 1.
I'm confused here. Riverside doesn't lead to Old Silent hill in any of the games, nor does Guy's map claim it does.
To Rob Matter: I appreciate you addressing that issue, believe me I've been knocking that one around for a long time, it's half the reason i put it off for so long.
There really hasn't been any substantial source material to verify it one way or the other, although the winding river makes more sense than assuming it was a mistake, it just seemed to tie up alot of the loose ends like roads leading to nowhere.
Just to be clear, I think your map is great and how you handled the Bachman problem was reasonable. It's somewhat anti-Occam for the otherwise straight river to curve sharply over the relatively short distance (although the distance itself could be longer, for all we know), and given all the other mistakes about SH1, it's likely that the creators simply screwed up the map. But they would have had to make the same mistake twice, since Lisa tells Harry to take Bachman to the lake, even though Bachman is clearly not the most efficient route from the Hospital, according to your map and the Origins map. I think the winding river is the best way to reconcile everything, but I agree that it's an unsubstantiated assumption.
Perhaps Crichton was originally supposed to be Bachman (if Bachman was originally Pullman). And perhaps this is what Makie is arguing. I might be able to confirm it by ripping the disc with PSMplay. That would make alot of sense, especially in regard to Lisa's instructions. Your map would be correct, then.
It seems Origins attempted to fix the problem, but they were probably unaware that Bachman in Old Silent Hill was misplaced/changed, so they merely edited over the problem by creating Riverside.