2 votes

NS Overpass


Norfolk Southern RR Truss Bridge (1907)

Photo taken by Panoramio user G Day

License: Creative Commons Attribution-NoDerivs (CC BY-ND)

View this photo at panoramio.com

BH Photo #266867


Pratt through truss bridge over NSRR (ex-N&W) on NSRR (ex-VGN)
Roanoke County, Virginia
Open to traffic
Built 1907
- Virginia Bridge & Iron Co. of Roanoke, Virginia [also known as Virginia Bridge Co.]
- Norfolk & Western Railway (NW)
- Norfolk Southern Railway (NS)
- Virginian Railway (VGN)
Pratt through truss
Also called
VNG/N&W Overpass
Approximate latitude, longitude
+37.24253, -80.14658   (decimal degrees)
37°14'33" N, 80°08'48" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/575692/4122118 (zone/easting/northing)
Quadrangle map:
Inventory number
BH 58074 (Bridgehunter.com ID)

Update Log 

  • February 21, 2017: New photos from Royce and Bobette Haley
  • February 17, 2017: Updated by Royce and Bobette Haley: refined design
  • April 14, 2014: Updated by Luke Harden: Added alt name based on forum comment
  • October 2, 2013: Photo imported by Dave King
  • September 18, 2013: Added by Dave King


  • Dave King - DKinghawkfan [at] hotmail [dot] com
  • Luke
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com


NS Overpass
Posted February 18, 2017, by Clark Vance (cvance [at] dogmail [dot] com)

My father was a CE with the KS highway Dept ca 1950 and the term he used was "catiwhompus". I haven't run across the exact definition in any of his old books yet.

NS Overpass
Posted February 17, 2017, by Tony Dillon (spansaver [at] hotmail [dot] com)

A non-technical term I like to use for this type of structure is "Womper-Jawed".

NS Overpass
Posted February 17, 2017, by Nick Schmiedeler

Neither have I....crazy/cool engineering

NS Overpass
Posted February 17, 2017, by Royce and Bobette Haley (roycehaley111 [at] yahoo [dot] com)

Thanks Nathan. I have just not encountered many Pratts that looked like this.


NS Overpass
Posted February 17, 2017, by Nathan Holth (nathan [at] historicbridges [dot] org)

Unless I am missing something, no there is not, aside from describing its unusual design features of vertical end posts and a heavy skew, but these don't play into the type of truss configuration here. Its basically a Pratt truss with a skew and vertical endposts.

NS Overpass
Posted February 17, 2017, by Royce and Bobette Haley (roycehaley111 [at] yahoo [dot] com)

Is there a sub category of Pratt for this bridge?


NS Overpass
Posted April 14, 2014, by Chris Ness (cness [at] earthlink [dot] net)

This bridge was the old Virginian (electrified) route crossing the Norfolk and Western mainline west of Salem.