S. Berliner, III's sbiii.com Pennsylvania Railroad Track Charts Continuation Page 1 keywords = Pennsylvania Pennsy PRR railroad Horseshoe Muleshoe Curve Altoona Juniata Gallitzin Allegheny Alleghany Allegrippus Tunnelhill Cresson Sang Hollow Lilly Hollidaysburg Duncansville Glenwhite Kittaning Burgoon Sugar Run Blair Gap Bennington New Portage Main Line Public Works Utilities track chart

Updated:   25 May 2012, 22:45  ET
[Page created 08 Nov 2003; converted 02 Sep 2011
    original AT&T Worldnet Website begun 30 May 1996.]

URL:  http://sbiii.com/prrtrch1.html
[was at "home.att.net/~Berliner-Ultrasonics/prrtrch1.html"]

S. Berliner, III
Consultant in Ultrasonic Processing
"changing materials with high-intensity sound"

[consultation is on a fee basis]

Technical and Historical Writer, Oral Historian
Popularizer of Science and Technology
Rail, Auto, Air, Ordnance, and Model Enthusiast
Light-weight Linguist, Lay Minister, and Putative Philosopher

note - The vast bulk of my massive Web presence (over 485 pages) had been hosted by AT&T's WorldNet service since 30 May 1996; they dropped WorldNet effective 31 Mar 2010 and I have been scrambling to transfer everything.  Everything's saved but all the links have to be changed, mostly by hand.  See my sbiii.com Transfer Page for any updates on this tedious process.

S. Berliner, III's


Pennsylvania Railroad
Track Charts




"The Standard Railroad of the World"

PRR Keystone

Because of page size limitations, the main PRR Page is now continued on Continuation Page 1, et seq., and this page is continued from the main PRR Track Charts page.

NOTE:  HTML limited my pages to 30kB!  Thus, I was forced to add separate pages to fit the various topics.


(see main PRR index on the PRR Main Page page:

On the main PRR Track Charts Page:

The page is presented in west-to-east mileage order from the Pittsburgh Division (MP 291) near New Florence/Johnstown (MP 290) to Huntingdon (MP 202), plus special coverage of:

the Horseshoe Curve,
the Altoona Area, and

MP Links:  289 (291/285), 281 (285/277+), 274 (277+/270), 266 (269+/262), 257 (262/253+), 249 (253+/245+), 242 ( 245+/238), 234 (237+/229+), 226 (229+/222), 218 (222/214), 211 (214/206+), and 202 (206/198+).

On this PRR Track Charts Continuation Page 1:

The Allegheny Division chart continues from Huntingdon (MP 202) on west to Duncannon (near Harrisburg) and the Harrisburg Division (MP 113), plus special coverage of:

the Johnstown Branch.

MP Links:  202 (206/198+), 194 (198+/190+), 179 (182+/174+), 171 (174+/166+), 163 (186+/159), 155 (158+/151+), 147 (151+/143), 139 (143/135), 131 (135/127+), 123 (127+/119+), and 116 (119+/113).

- - - * - - -

Zoo Interlocking Diagrams

The MAINTENANCE PROGRAM AND TRACK CHART posted here appears to be dated 12-31-70; it covers the ALLEHENY DIVISION of the CENTRAL REGION of the (PRR purists - excuse me!) PENN CENTRAL railroad.  However, it still shows full four-track Main Line [from "Gray" Tower at Tyrone (MP 223) through the Horseshoe Curve to where the north track diverges as the Sang Hollow Extension at Johnstown (MP 277)] and the latest date in the maintenance examples noted on the printed copy is 1967.

The ALLEGHENY DIVISION runs between the Pittsburgh Divison at Milepost 290+1100 [meaning Milepost (MP) 290 (290 miles plus 1,100' from Philadelphia)] just west of JD tower near New Florence and Johnstown, and the Harrisburg Divison at MP 113+1825 just east (south along the Susquehanna River at that point) of Duncannon, just west (north) from the Rockville Bridge between Enola and Harrisburg.

The document is in the form of an "endless" chart folded to 4" x 11" (10.2mm x 28mm), with cardboard pasted behind the cover and on the back of the last fold.  It consists of two separate sections, the MAINTENANCE PROGRAM, printed at the top and the TRACK CHART, printed at the bottom; the two align horizontally in terms of track location.  As with all Pensylvania Railroad (PRR, Pennsy) track charts, the mileposts are based on the reference point of Philadelphia and, in this case, are shown in diamonds at the top of the chart; the figures in between are the actual distances between mileposts, in feet, which differ slightly from a true mile of 5,280' because of the locations of the posts.  Sub-divisions are shown, as are the names of the Supervisors and Assistant Supervisors.

At the very end of the document, the Johnstown branch is shown.

I have posted this with scads of verbal detail so that it is easy to search for place names using your eyes or a search function:

Mileposts 290 though 278 on the Sang Hollow Extension are annotated 13 through 1 and the track distances between mileposts are also annotated with an "SH" after them.

note-rt.gif - [I think right-to-left, or east-to-west in railroad terms, but this information is given in reverse sequence so that it reads logically from left-to-right (west-to-east), as arranged in the document.  Note also that the document is in three pieces, pasted, quite obviously, at the very beginning of the charts themselves, where it doesn't interfere with visualization, and, more obviously, at MP 238; unfortunately, the less informative right part there is pasted over the more useful left part, so I will verbally describe what's covered over at that point, which is the eastern approach to the Horseshoe Curve out of Altoona.]

The upper portion of the document is of little interest to me and I will not use up valuable memory to reproduce it in its entirety.  It is (was) color coded by hand and is so faded that it won't reproduce well, anyway, but represents the condition of the rails and ties at an unspecified given moment in time; the hand-written annotation on the cover is in green felt-tip marker and reads:

1972 -


In addition, it actually shows the number of ties between mileposts!  [Just what you always needed to know!]  Rather than cheat you out of any idea of what's missing, I have reproduced the full first and second-to-last folds in full, as well as including the lower portions (the track charts) in their normal sequence.  So, without too much more ado, let's see the cover and then venture inside {TN = Thumbnail image - click on the picture for much larger image}:

front cover

No one signed off the cover but that date at the bottom is still barely legible; I think it reads 12-31-70:

12-31-70 date

Opening the first fold, we find it is only 2/3rds of the RAIL PROGRAM, DRAINAGE, and RECONDITIONING TRACK legends (at the top) and of the DIVISION MAP (at the bottom).  These are continued on the first part of the next fold, so I combined them (verrrry carefully) {TN}:

3-fold Program and Map
(Thumbnail image - click on the picture for a very-large image)

To make your life simpler and give even more-detailed coverage, I also split the image into the Maintenance Program (top) {TN}:


and the Division Map {TN}:

Div Map

The Division Map shows all the Branch Lines in the Division.

The next two folds contain a "PROGRAM HISTORY LEGEND" (top) and an "INDEX" (bottom) {TN}:

Prog Hist Legend and Index

Again, so as not to cheat you, I blew up the Legend {TN}:

Prog Hist Legend

and the Index (although it does no good unless you also have the branch line charts - only Johnstown is included) {TN}:

Prog Hist Legend

There is then a reprise of the Maintenance legend headers and the CHART LEGEND {TN}:

Prog and Chart Legends

Being consistent, here is the enlarged Chart Legend {TN}:

Prog Legend and Index

[Note that, the legend notwithstanding, the document is printed on off-white paper and there is no color whatsoever except for the green felt tip; I assume that it is a so-called "white print" (from an Ozalid machine).  Further, it would appear that this is made from a second (or greater) generation master transparency, with many of the annotations, such as those for the Sang Hollow Extension, the tie count, and the track maintenance details, pencilled in on an intermediate master; I assume that the original ink tracing was kept at Philadelphia or, once it became Penn Central or Conrail, at Enola].

NOW, at last, we come to the continuation of the actual track charts, picking up with (and repeating) MP 202:

Abbreviations noted: "MP" = Milepost, "Br." = Branch, "Sec." = Secondary, "Twp." = Township, "Co." = County, "Boro." = Borough, "SH" = Sang Hollow (Extension), "EWD" = Eastward ("EB" = eastbound), "WWD" = Westward ("WB" = westbound), "Frt." = freight, "Crk" = Creek, "R." = River (a "Run" is a stream), "Sdg." = Siding, "RoW" = Right-of-Way, "L." = Little, "Sta." = Station, "SB" = Signal Bridge, "{TN}" = ThumbNail image - click on the picture for a much larger image.

The Sang Hollow Extension does not appear on these folds, ending at "SG" Tower (Johnstown); a dedcription of it is on the preceding page.

Steam locomotive pans (water troughs) are no longer shown.

The chart seems to use a single word, "MAINLINE", but I will use the more standard convention, "MAIN LINE".

Here we go, then; to save me lots of work, and you peering at a bunch of illegible thumbnails, I am giving verbal descriptions of each fold and linking them to the full images; the descriptions consist of the end mileposts, the features between them, and the image filenames are based on the approximate middle milepost.  Note also that speed restrictions are posted at the bottom of some folds, as are spaces (mostly blank) for gross tonnage restrictions (which is determined by track conditions) and named curves and other features (all of which can be searched):

{pasted overlap}


Repeating MP 202 for continuity:

MP 202 {TN} (MP 206/198+) - undesignated SB {204.9?}, "DEER" Tower, SB 2044/2043, Compound curve, MP 204 curve, Oneida Twp./Huntingdon Boro., MP 203 curve, Huntingdon, "HUNT" Tower, Muddy Run, Huntingdon curve, MP 202 curve, Huntingdon Boro./Henderson Twp., Rock Cut curve, MP 201 curve, Nuner's Run, Ardenheim, SB 2003/2002, Tool House curve (see also 134.6), Wilson's Run, Wrights curve:


And then continuing with MP 194:

MP 194 {TN} (MP 198+/190+) - Red Wash Culvert, Mill Creek, SB 1982/1981, Sugar Grove Crk., Henderson Twp./Brady Twp., Mill Creek, Mill Creek curve, Bridgeport curve, Paper Wood Siding, Bridgeport, Bridgeport Siding, Vandevenders curve, Juniata River, Brady Twp./Union Twp., Cabin Crk., Campbell Crk., SB 1939/1938, Mapleton, Weston Crk., Mapleton curve, Feed Mill, Jackstown curve, MP 192 curve, "JACKS" Tower, MP 191 curve, Mt. Union:



MP 186 {TN} (MP 190+/182+) - Old Wood Preserving Plant, Juniata R., Hunt. Co./Wayne Twp. - Mifflin Co., MP 189 curve, SB 1889/1888, Newton Hamilton, Newton Hamilton curve, SB 1867/1866, MP 185-186 curve, Kelly Run, Vineyard curve, Vineyard, Figure 8 curve:


MP 179 {TN} (MP 182+/174+) - SB 1823/1822, Wayne Twp./Oliver Twp., Ryde River, Oliver Twp./Bratton Twp., Ryde, Red Rock curve, MP 180 curve, Zooks curve, Bratton Run, Feed Mill, McVeytown, McVeytown curve, Paper Wood Siding, Miller's Sand Co., Millers curve (see also 139.9 and 240.2):

MP 171 {TN} (MP 174+/166+) - SB 174.6/174.5, MP 174 curve, Mountain Run, Texas Eastern {gas pipeline}, Longfellow curve, Fosters {pipeline?}, MP 172 curve, Bratton Twp./Granville Twp., Anderson curve, Glasgow Run, SB 1706/1705, Mineheart Run, Granville curve, Granvillle, Granville Twp., "PX" curve, Casner's (see also 153.6), Juniata River (Mays Bridge), Industrial Siding - Mobile Homes, Eyre curve:

MP 163 {TN} (MP 186+/159) - Juniata River, "LEWIS" Tower, Round House curve, Lewistown Sec., Lewistown, "J" curve, Watch Box curve, Peters curve, Bixlers curve, SB 1627/1626, Shawnee, Shawnee curve, MP 162 curve, MP 161 curve, SB 1607/1606, Hawstone, Mifflin Co. - Granville Twp./Juniata Co. - Milford Twp., Narrows curve, "G" curve:


MP 155 {TN} (MP 158+/151+) - MP 159 curve, SB 1586/1585, MP 158 curve, Black Log curve, Black Log Run, Denholm, Muddy Run, New Sdg., MP 156 curve (1 mile long, including Lauvers and W. Mifflin curves), "MIFFLIN" Tower, Mifflin Reverse curve, Mifflin, Stone House curve, Casners curve, Casners Run (see also 168.5), SB 1526/1525, Port Royal:


MP 147 {TN} (MP 151+/143) - Milford Twp./Market St. Boro., {Market St.} Boro./Turbett Twp., Port Royal curve, SB 1507/1506, MP 150 curve, Mexico curve, SB 1488/1487, Bohners Run, Tuscarora curve, Tuscarora, Turbett Twp./Walker Twp., Thirty Minute curve, SB 1468/1467, MP 145 curve, SB 1446/1445, Walker Twp./Delaware Twp., Adams curve:

MP 139 {TN} (MP 143/135) - "PN" curve, SB 1426/1425, Thompsontown, Overhead Bridge curve, West End curve, East End curve, Signal 1417 curve, Potash Run, Durward curve, SB 1408/1407, Millers curve (see also 240.2 and 175.7), Spring curve, SB 1389/1388, "RK" curve, Juniata Co. - Delaware Twp./Perry Co. - Tuscarora Twp., Millerstown curve, Millerstown, Raccoon Creek, SB 1368/1367, Sugar Run curve and Sugar Run (see also 230.7), Cranes Mt. curve, Tuscarora Twp./Oliver Twp., Riders Run:

MP 131 {TN} (MP 135/127+) - Tool House curve (see also 199.7), SB 1348/1347, "PORT" Tower, Buffalo Creek curve, Big Buffalo Creek, Newport curve, Oliver Twp./{?} Boro., Newport, {?} Boro./Oliver Twp., L. Buffalo Crk., MP 131 curve, SB 1305/1304, Oliver Twp./Miller Twp., MP 129 curve, SB 1287/1286, Fergusons curve, Bailey, Bailey curve:

MP 123 {TN} (MP 127+/119+) - SB 1270/1269, Iroquois curve, Iroquois, Buckwalters curve, Loshs Run, Miller Twp./Wheatland Twp., Alter's Run, SB 1233/1232, Wheatland Twp./Penn Twp., Aqueduct curve, Pipe Line curve, SB 1215/1214, Juniata Bridge curve, Penn Twp./{?} Boro., Duncannon curve:

MP 116 {TN} (MP 119+/113) - Duncannon, Boro./Penn Twp., Juniata Crk., undesignated SB {119.2?}, "VIEW" Tower, Shermans Crk., undesignated SB {118.7?}, "JO" and Mountain curves, Cove Crk., SB 117.8, Kinkora and Dairy Farm curves, SB 1161/1160, MP 116 curve, Cove, Elkton curve, Perdix, SB 1142/1141, Bobs curve, Allegheny Div: 113+1825/Harrisburg Division:

As I did for the first track chart fold of the document, here is the entire last-but-one fold in full {TN}:

full 116

Again, as promised, here is the upper part, the Maintenance Program, enlarged; as you can still see, the annotations are barely visible and the darker portion of the trackage is the green coloring {TN}:

program 116


Finally, here, on the last fold, facing the inside back cover, is the Johnstown Branch, with Woodvale Yard, the terminal and the B&O interchange, connecting with Main Line No. 1 Track just over the City of Johnstown/E. Taylor Twp. boundary {TN}:

Johnstown Branch

The back cover is merely blank, off-white, semi-gloss cardboard, pasted to the back of the last fold.

Th-th-that's all, folks!  For the insane memory {and my time} this took up (18.5Mb of images and 27Kb of text and a full day-and-a-half), you'd better enjoy this!


Doug Nash of the NMRA/NER/STD (LIRR) and the PRRT&HS has copies of drawings of the old Pennsy "Zoo" interlockings at Philadelphia, where the four-track main (NY-to-Harrisburg and beyond diverges from the four-track Corridor (NY-to-Washington) [among many, many other things, as well!].  They were drawn by Ed Spodobalski {sp?}, who drew up interlocking diagrams for various Pennsy plants for a magazine called PC Railroader (Rails Northeast as it later became known) "eons ago" and Doug kindly offered to scan them for a PRRT&HS inquiry.  As long as he was taking that kind of trouble, I, in turn, offered to post them for all to see; here they are, with Zoo in more or less it's original form.

First, there is a "shrunken" over-view, done by David V. Nogar*, then Manager - Field Operations, NJ Transit, July 1989, the others are an undated larger scale interlocking diagram of the Junction on three pages.  For the latter three, I have pieced them together for a quick look; there is a slight gap between the left (west) end and the center while the center and the right (east end) overlap slightly:   rev (25 May 2012)

[* - This attribution originally read "apparently by D. V. Rogar"; I heard from Mr. Nogar himself on 25 May 2012 and he corrected the spelling of his name; he is now the Acting General Superintendent, NEC {North East Corridor} Service Operations, National Railroad Passenger Corporation {Amtrak}, at Pennsylvania Station in New York (City).]   added (25 May 2012)

Zoo Interlocking Diagram - overview
(drawing by D. V. Nogar, courtesy of D. Nash - all rights reserved
75Kb thumbnailed image - click on picture for larger image)

Zoo Interlocking Diagram - detail
(drawing by E. Spodobalski, courtesy of D. Nash - all rights reserved
176Kb thumbnailed image - click on picture for larger image)
{the black registry marks delineate the mating edges of the scanned images}

In addition, here are the three sections separately:

Zoo Interlocking Diagram - west detail Zoo Interlocking Diagram - center detail Zoo Interlocking Diagram - east detail
(drawings by E. Spodobalski, courtesy of D. Nash - all rights reserved
62, 67, & 48Kb thumbnailed images - click on pictures for larger images)

Thanks, Doug!

Because of page size limitations, the main PRR Page is now continued on Continuation Page 1, et seq.

For tall tales of the Berlinerwerke and its equipment and such (much of which is PRR or PRR-ish,
visit the Berlinerwerke Apocrypha page, et seq.

BW Key

You will specially appreciate (or hate)
  the PRR Class Z6s Arctic 4-2-2,
  the PRR Class V Rocky 4-14-2,
  the PRR Genesis Engine (unlikely!), and
  the PRR Centipede Engine 4-D-D-4 (even more unlikely, but oh, 'tis true, 'tis true!).

Because of page size limitations, this page was continued from the PRR Track Chart page.

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S. Berliner, III

You may wish to visit the Railroad Page, et seq.

of this series of Pennsylvania Railroad pages.


  What happens to all this when I DIE or (heaven forfend!) lose interest?  See LEGACY.


See Copyright Notice on primary home page.

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