It's been on ice for awhile. Just haven't been in a FF7 mood for a long time, no legit excuse really. All of Midgar is more or less pieced together at least on paper, some of which is actually in-game but I'll be damned if I can get motivated to even crack open the field script again.
As for the PSX version, I know there was a tool I was using to peek at the field scripts for that since I was borrowing unused script from the Japanese PSX version for use in the PC version, but I can't remember what it was. FF7 was a minor project in a sea of larger ones. :/ Sorry I can't be more specific on the matter.