I recall in my memory bank that this was a laser cut wood kit that was meant to resemble the bridge on the 1952 catalog cover. I recall a store or business by that name that was making these along with some other postwar Lionel nostalgia type items in the mid to late 2000s.
Looked very similar to what Jim posted in your thread from 11 years ago.
I ‘d suggest opening the box to verify what it is. This isn’t a sealed 773 or FM Train Master. No one will value a bridge kit in a sealed non-descript cardboard box over one that has been opened to show what it is.
Edit: funny timing (or sneaky algorithms) that the attached listing showed up in my FB feed after my post. It appears Kenny Barnes is still at it and is still selling the repro smoke pellets I remember as one of his products although the bottle has changed. Perhaps you can contact him to get more info on the bridge kit.