The mainline at Cresson Wye has 1 track WB, and 2 tracks EB (as does most of the NS mainline, today).
East of MO Interlocking there a 4 tracks, and that is where the upper grade separation begins.
West of MO Interlocking there is a switch that leads to the Corman line north to Fallentimber, and also there are several lead in switchs to the wye, and siding tracks, and also to the Upper Yard (which is now mostly a scrap yard).
In Google Earth (free) you can see the siding tracks to the wye, there may be 3 additional siding tracks on the north side of the mainline ... IDK.
Cresson also had the "O" track that split from the mainline just past the Cresson flyover (torn down), and went east behind MO Tower (also torn down), and the Cresson Lower Yard was attached to the "O" track.
If I am correct the "O" no longer exists, and is a gravel access road under the Rt 53 bridge.
The Upper Grade separation has 2 lower tracks diverging to UN Tower (town down) and Gallitzin, and 2 higher tracks leading to AR Tower (abandoned pending demolition) and narrows to a single track at AR tower and goes through the Portage bore.
http://railsandtrails.com/PRR/InpsectionTrip1952/index.htm See: Torrance to Altoona (You will need free Irfanview and All of it's free Plug In's, to view at @ 86% zoom.
http://broadway.pennsyrr.com/Rail/Prr/Maps/Itlk/mo.gif
http://broadway.pennsyrr.com/Rail/Prr/Maps/Itlk/ar.gif
http://broadway.pennsyrr.com/Rail/Prr/Maps/Itlk/itlk_alt_pgh_main.html
Alot of the tracks shown are torn out. Best viewing is at @ 200% zoom
At a later date you can always edit tracks out, and make changes, as can the end user.
I absolutely hate the way NS has streamlined the once complex PRR mainline ... that is why I include all the tracks that ever were on my route.
I am working on a newer updated CDP this weekend, and hope to release a follow up 2nd CPD, to replace my 1st CDP which is already on Mediafire.