Rating:
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NS - Susquehanna River Bridge (Sidney)

Photos 

Two spans - one is clearly abandoned; the other looks viable but may in fact no longer be in service.

Photo taken by Bruce Roberts in March 2022

License: Creative Commons Attribution-Share-Alike (CC BY-SA)

Enlarge

BH Photo #526654

Facts 

Overview
Subdivided Lattice through truss bridge over Susquehanna River on NS RR
Location
Sidney, Otsego County, New York
Status
Open to traffic
History
2 spans have been abandoned
Railroads
- Canadian Pacific Railway (CP)
- Delaware & Hudson Railway (DH)
- Norfolk Southern Railway (NS)
Design
Subdivided Double-intersection Warren through truss
Approximate latitude, longitude
+42.31609, -75.37202   (decimal degrees)
42°18'58" N, 75°22'19" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/469342/4684939 (zone/easting/northing)
Inventory number
BH 90259 (Bridgehunter.com ID)

Update Log 

  • March 19, 2022: New photos from Bruce Roberts
  • August 13, 2020: Added by Geoff Hubbs

Sources 

  • Geoff Hubbs
  • Bruce Roberts

Comments 

NS - Susquehanna River Bridge (Sidney)
Posted March 22, 2022, by Bruce Roberts (brobertsa1z2 [at] gmail com)

Thanks for the info, Roger! I've corrected this entry.

NS - Susquehanna River Bridge (Sidney)
Posted March 21, 2022, by Nathan Holth (webmaster [at] historicbridges [dot] org)

Tony,

Yes, that is correct, and true for most of those Ontario highway bridges. Assume the railroads wanted greater rigidity.

NS - Susquehanna River Bridge (Sidney)
Posted March 21, 2022, by Tony Dillon (spansaver [at] hotmail [dot] com)

Interesting observation Nathan... and something I hadn't even thought about!

The only difference I can see between this bridge and your example, is that the sub-dividing vertical extents from the top to bottom chord on this one.

NS - Susquehanna River Bridge (Sidney)
Posted March 21, 2022, by Nathan Holth (webmaster [at] historicbridges [dot] org)

I don't have an elevation view of these trusses but it looks like each panel has an "X" in it. That would be a subdivided Double-Intersection Warren truss. The type can be found more commonly in Canada.

https://historicbridges.org/bridges/browser/?bridgebrowser=o...

NS - Susquehanna River Bridge (Sidney)
Posted March 21, 2022, by Roger Deschner (rogerdeschner [at] gmail [dot] com)

I'll throw my guess in here. This looks quite a bit like a Baltimore truss, with some extra parts thrown in. It satisfies the basic test for a Baltimore truss, in that it displays the letter M several times. But this unusual bridge also has the letters W and X. For the bridge John Marvig mentioned below, Mike Goff thought that one also looked a bit like a Baltimore truss. Could we just call this one and that similar bridge "modified Baltimore truss"?

BTW Bruce Roberts: Those are not narrow gauge rails in photo #5. They are called guard rails, and are there to keep a derailed car from going too far off the tracks and hitting the side of the bridge or tumbling off into the river. They keep a simple derailment from becoming a much more serious accident. You'll see these on most railroad bridges, trestles, and tunnels, and sometimes just on sharp curves. Lots of examples here. Description: https://en.wikipedia.org/wiki/Guard_rail_(rail) Don't be embarrassed - this is how we all learned. Keep taking good photos!

NS - Susquehanna River Bridge (Sidney)
Posted March 20, 2022, by John Marvig (marvigj27 [at] gmail [dot] com)

This about the closest I've seen:

http://bridgehunter.com/ia/marshall/bh52756/

I'm also curious about the builder. The plaque shape suggests American Bridge, but I have not seen that shape on a pre-1910 bridge.

NS - Susquehanna River Bridge (Sydney)
Posted March 20, 2022, by Tony Dillon (spansaver [at] hotmail [dot] com)

This one is a bit of a head-scratcher. Appears to be some type of a Pratt variant.

John, have you seen another railroad bridge with this truss configuration?

NS - Susquehanna River Bridge (Sydney)
Posted March 20, 2022, by Geoff Hubbs

And I made it Sidney with one y.

NS - Susquehanna River Bridge (Sydney)
Posted March 20, 2022, by Geoff Hubbs

Good, Tony. Want to add the truss type?

NS - Susquehanna River Bridge (Sydney)
Posted March 20, 2022, by Tony Dillon (spansaver [at] hotmail [dot] com)

I fixed it Geoff.

NS - Susquehanna River Bridge (Sydney)
Posted March 20, 2022, by Geoff Hubbs (geoffrey [dot] hubbs [at] att [dot] net)

Bruce- can you make Photo #3 the thumbnail and the 1st photo?