3 votes

UP - Timber Creek Bridge (S)


UP Timber Creek Bridge (S)

Looking South

Photo taken by John Marvig in October 2016


BH Photo #368846



Build date provided by ICC Valuation Summary Report, courtesy Doug Harding collection.


Pratt through truss bridge over Timber Creek on Union Pacific Railroad
Marshall County, Iowa
Open to traffic
Built 1901
- Chicago & North Western Railway (CNW)
- Iowa Central Railway (IAC)
- Minneapolis & St. Louis Railway (MSTL)
- Union Pacific Railroad (UP)
Pratt through truss
Span length: 118.0 ft.
Total length: 118.0 ft.
Also called
M&StL #332
Approximate latitude, longitude
+42.01093, -92.84549   (decimal degrees)
42°00'39" N, 92°50'44" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/512793/4651000 (zone/easting/northing)
Quadrangle map:
Le Grand
Inventory number
BH 52756 (Bridgehunter.com ID)

Update Log 

  • October 29, 2016: New photos from John Marvig
  • October 27, 2014: Updated by John Marvig: Corrected Build Date
  • July 2, 2013: New photo from John Marvig
  • June 26, 2013: Updated by John Marvig: Added Builder Date
  • December 4, 2012: Updated by John Marvig: Added information
  • August 25, 2012: Photo imported by Luke Harden
  • June 27, 2012: Updated by Luke Harden: Appears to be a pratt truss in image I linked to.
  • June 26, 2012: Updated by Luke Harden: Added categories "Railroad", "Minneapolis and St. Louis Railway"


UP - Timber Creek Bridge (S)
Posted March 29, 2021, by Mike Goff (michael [dot] goff [at] hotmail [dot] com)

This looks like a stubby little Baltimore Truss to me.

Maybe one of our historic truss experts have another name for it that I am not aware of, but that is functionally what it appears to be.


UP - Timber Creek Bridge (S)
Posted March 24, 2021, by John Marvig (marvigj27 [at] gmail [dot] com)

I definitely need to get back to this one for more detailed photos. I have attached a diagram of the design. It is very different from any of the designs I have seen on a railroad truss, especially one so short. It also is much different than the four panel trusses in Mahaska and Monroe Counties. How would we classify this design?