Marker Logo HMdb.org THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Near St. Louis in St. Louis County, Missouri — The American Midwest (Upper Plains)
 

#4700

Pennsylvania

 

1931

 
#4700 Marker image. Click for full size.
By Devry Becker Jones, April 22, 2019
1. #4700 Marker
Inscription.  This is one of two class P-5 prototypes built at the railroad's Altoona, PA, shops. They led to the construction of 90 additional, class P-5a locomotives which were built for electrified passenger service between New York City, Philadelphia, PA, Washington, DC, and Harrisburg, PA. In 1939 they began being regeared from a top speed of 90 to 70 mph for freight service and were replaced in passenger service by the famous GG1 type locomotives, one of which is on exhibit. It takes its power from an overhead wire carrying 11,000 volts, single phase AC, at 25 Hertz via pantographs on its roof. It is 62' 8" long and weighs 392,000 lbs. 225,000 lbs. of that on its 72" drive wheels. IT has a 2-C-2 classification, with only the three center axles powered. Its 625 HP traction motors (two per drive axle) produce 3,750 HP on a continuous basis, with a short term output of 6,500 HP. The center drive wheels are "blind," having no flanges to allow it to take tighter curves. Two or three could be operated together on heavy trains, controlled from the lead unit. Donated in 1968 by the Pennsylvania Railroad.
 
Erected by
#4700 Marker image. Click for full size.
By Devry Becker Jones, April 22, 2019
2. #4700 Marker
Museum of Transportation.
 
Marker series. This marker is included in the Pennsylvania Railroad marker series.
 
Location. 38° 34.223′ N, 90° 27.825′ W. Marker is near St. Louis, Missouri, in St. Louis County. Marker can be reached from Barrett Station Road east of Old Dougherty Ferry Road, on the right when traveling east. Touch for map. Marker is at or near this postal address: 3015 Barrett Station Road, Saint Louis MO 63122, United States of America. Touch for directions.
 
Other nearby markers. At least 8 other markers are within walking distance of this marker. #274 (here, next to this marker); #311 (a few steps from this marker); #4916 (a few steps from this marker); #39 "Marmora" (a few steps from this marker); The "Katy Flyer" (a few steps from this marker); West Barretts Tunnel (within shouting distance of this marker); MKT #1 (within shouting distance of this marker); #5529 (within shouting distance of this marker). Touch for a list and map of all markers in St. Louis.
 
Categories. Railroads & Streetcars
 

More. Search the internet for #4700.
 
Credits. This page was last revised on April 28, 2019. This page originally submitted on April 28, 2019, by Devry Becker Jones of Washington, District of Columbia. This page has been viewed 43 times since then. Photos:   1, 2. submitted on April 28, 2019, by Devry Becker Jones of Washington, District of Columbia.
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