2 votes

CN - Peshtigo River Bridge


Looking west

Photo taken by Robert Thompson in December 2010


BH Photo #191046


Quadrangular Warren, or Lattice, through truss bridge over Peshtigo River on Canadian National Railway
Peshtigo, Marinette County, Wisconsin
Open to traffic
- Canadian National Railway (CN)
- Chicago & North Western Railway (CNW)
Middle span is shorter than the end spans
Length of largest span: 130.0 ft.
Total length: 356.0 ft.
Approximate latitude, longitude
+45.04637, -87.74558   (decimal degrees)
45°02'47" N, 87°44'44" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/441284/4988371 (zone/easting/northing)
Quadrangle map:
Marinette West
590 ft. above sea level
Inventory number
BH 47447 (Bridgehunter.com ID)

Update Log 

  • March 30, 2016: New photos from John Marvig
  • April 19, 2013: New photo from Tom White
  • December 29, 2010: Updated by Matthew Lohry: Corrected bridge type
  • December 28, 2010: Updated by Robert Thompson: Corrected spelling



Peshtigo River Railroad Bridge
Posted December 30, 2010, by Mike Boehne (mikebon088 [at] yahoo [dot] com)

Enlarging the third picture looks like both end spans are 9 panels long, while the middle span is seven.

Peshtigo River Railroad Bridge
Posted December 29, 2010, by Robert Thompson

Thanks for that. I design ships, not bridges!

Peshtigo River Railroad Bridge
Posted December 29, 2010, by Matthew Lohry

A small correction, if I may--definitely not a lenticular, but not a double-intersection Warren, either. This is what is known as a "Quadrangular Warren" truss, or "quadruple intersection Warren", if you will...opposing diagonal members cross each member 3 times to divide each member into four segments; hence the Quadrangular name. Double intersection Warren trusses are named because each diagonal is crossed by the opposing diagonal only once, dividing the diagonal into two segments. These are common in New York, crossing the Erie Canal. Hope this helps!

Peshtigo River Railroad Bridge
Posted December 29, 2010, by Todd D. Walker (mrwalk08 [at] aol [dot] com)

Close but no cigar. This bridge is a double intersection warren or "lattice" truss. Lenticulars have a featured "eye" shape, hense "lens" = "lenticular". Look at spans such as Pittsburgh's Smithfield Street Bridge or the five span example in Binghamton, NY. Those spans are true lenticular trusses.