I've actually got a Live Maps collection of the A&A route...
View it
Here.
My apologies, Live is being buggy and not letting me add paths right now (I added the Arcade area to NJ a while back...), so you'll have to follow the pushpins for now until I get it updated.
Pins 6 through 42 show the mainline from NJ to the interchange at Attica. There's two places where roads actually replaced the ROW - Thomas Rd in Varysburg (pins 19 & 20), and Lower Cotton Hill Rd between Varysburg and Attica along Rt 98 (pins 26 to 31). I believe both are considered Seasonal use and for that matter I'm pretty sure the northern part of Lower Cotton Hill shown on the map is actually completely abandoned now... If I had to hazard a guess, I'd say it was probably either in this area where the washout occurred that caused them to abandon the line, either that or where it crosses the Tonawanda just west of 98 (pin 39)
It is very easy to find the old crossing of Rt 20A in Varysburg (b/t pins 20 & 21) - on the western hill, there's a spot where it levels off greatly, and you can actually see the lay of the land in the person's driveway to the south and an old path to the north...
Pin 41 is the location mentioned earlier, about the Rodeo's driveway, and the garage.
Pin 42 is the prison switch, Pins 43 and 44 are the ridge behind the park that lead to the interchange with the NS mainline.
Pins 45 through 49 is the line leading to prison yard, while pins 50 through 53 are the other line coming off the mainline, my guess is its the turn at 52 that was what required the A&A to do the switching in the area, as opposed to the mainline owner doing themselves. The doors even still exist where they brought the cars into the prison yard...
When you do venture through, be VERY careful about wandering in the areas with pins above 45, the prison property extends pretty far past the walls, so you don't want to get caught there, for sure. I'm not even sure the ethics of focusing on pins in that area, but if Picometry was able to photograph it and Microsoft allowed to put it up, then it should be fine, right?
I'll try to label these pins a little better on the collection in the future, and try to get a path put in instead of all the pins... When I shouldn't be sleeping...