Also some maps show Sedgwick in advance of the existing old railroad line.... Once they cut in the new US Military Rail line to the Petersburg lines from City Point... some show it situated just behind that one. Id have to do some old file digging to find out which rail line the still existing railroad bed followed that appears on the modern map... So it should be just above or just below the rail bed seen in the map here....
Did you ever determine when the existing railroad line went in? I should very much like to know. I happened across this thread while trying to google info on it and I had totally forgotten we had discussed it before.