No votes cast

PRR - Arsenal Bridge (Old)


PRR Delaware Extension Bridge Phila

Photo uploaded by Art S.

View this photo at ebay.com

BH Photo #435963



Lost Whipple through truss bridge over the Schuylkill River on Pennsylvania Railroad
Philadelphia, Philadelphia County, Pennsylvania
No longer exists
Built 1862; replaced 1886
- Jacob H. Linville of Pittsburgh, Pennsylvania
- Keystone Bridge Co. of Pittsburgh, Pennsylvania
- Pennsylvania Railroad (PRR)
Linville varient Whipple through truss with vertcal endposts. Endposts appear to be cast iron
Approximate latitude, longitude
+39.94333, -75.19167   (decimal degrees)
39°56'36" N, 75°11'30" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/483625/4421485 (zone/easting/northing)
Inventory number
BH 83107 (Bridgehunter.com ID)

Update Log 

  • October 22, 2018: New photo from Douglas Butler
  • October 15, 2018: Updated by Luke: Noted that the main span was a Linville variants of the Whipple truss.
  • October 14, 2018: Updated by Luke: Added info
  • October 14, 2018: Added by Art S.

Related Bridges 


  • Luke
  • Douglas Butler


PRR - Arsenal Bridge (Old)
Posted October 15, 2018, by Luke

It seems like some of the spans of further variants (Such as the later (Linville-Piper Whipple) may have been reused.

Two deck spans from Steubenville were reused as a road bridge in Pittsburgh ( https://bridgehunter.com/pa/allegheny/bh83120/), and John and I have already documented several of the spans of the Illinois Central's original Dubuque bridge were relocated, though none of the Linville ones seem to exist, with most being replaced ( https://bridgehunter.com/ia/linn/coggon/; https://bridgehunter.com/ia/linn/bh60489/ ) or some being lost to flooding ( https://bridgehunter.com/wi/green/bh81901/ ).

Additionally, there was a Linville truss at Painesville, Ohio that was the basis for someone's graduating thesis at the State University of New York, but there's no reference to the line using it.

( https://books.google.com/books?id=gDgdAQAAIAAJ&pg=PA316&dq=g... )

PRR - Arsenal Bridge (Old)
Posted October 15, 2018, by Art S. (asuckewer [at] knite [dot] com)


I believe that Mead Ave ( http://bridgehunter.com/pa/crawford/mead-avenue/ )is the only bridge still in existence that fully conforms to this patent (I suspect it also has the shortest spans of the design). The Valley Road Bridge on the Stewartstown Railroad ( http://bridgehunter.com/pa/york/valley-road/ ) is close but is a Pratt pony and the lower cord and its connections may be different.


Art S.

PRR - Arsenal Bridge (Old)
Posted October 15, 2018, by Luke

Here's a ASCE scan of a plate showing the design of a Linville variant.