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Kuehn Road Bridge


Kuehn Road Bridge

from the north

Photo taken by Michael Goff on June 5, 2009


BH Photo #141187



Warren pony truss bridge over Kellogg Creek on Kuehn Road
Clackamas County, Oregon
Replaced by PS Slab
Built 1958
Riveted Warren pony truss
Span length: 50.9 ft.
Total length: 50.9 ft.
Approximate latitude, longitude
+45.42389, -122.61361   (decimal degrees)
45°25'26" N, 122°36'49" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/530227/5030113 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2010)
Inventory numbers
OR 06262 (Oregon Dept. of Transportation structure number)
BH 29878 (Bridgehunter.com ID)
Inspection report (as of May 2017)
Overall condition: Fair
Superstructure condition rating: Very Good (8 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Very Good (8 out of 9)
Sufficiency rating: 81 (out of 100)
View more at BridgeReports.com

Update Log 

  • July 19, 2011: Updated by Rebecca Burrow: Bridge has been replaced.
  • June 8, 2009: New photos from Michael Goff


  • Mike Goff - michael [dot] goff [at] hotmail [dot] com
  • Rebecca Burrow


Kuehn Road Bridge
Posted May 25, 2010, by Nathan Holth (form3 [at] historicbridges [dot] org)

Oregon should have a historic bridge inventory/survey that would identify which bridges are considered eligible/ineligible for the National Register. If you can't find it online, you may have to contact somebody who works with Section 106 at the DOT or contact the Oregon SHPO. Some states have neglected to publish their HBI's online, which is frustrating. Also, many HBI's are old and outdated, and thus do not account for increased bridge rarity/significance due to demolition

Oregon does have a historic sites database, but it appears to be incomplete and does not have all bridges listed: http://heritagedata.prd.state.or.us/historic/

I would certainly consider this bridge to have historic value (I would consider it eligible to be in my www.HistoricBridges.org collection) however this is different than being eligible for the National Register of Historic Places (ie "officially" historic). Given the small size of the bridge, the fact it is relocated, no innovative or distinctive details of a builder/engineer, etc, my guess is that it would be listed Not Eligible in a Historic Bridge Inventory. The only exception I can think of would be if those rolled beams were "H" sections and were an early example of such, but I don't think they are "H" sections.

Kuehn Road Bridge
Posted May 25, 2010, by Michael Goff (michael [dot] goff [at] odot [dot] state [dot] or [dot] us)

This bridge like many others in Clackamas County is probably a recycled bridge that was relocated from somewhere else. I tried looked for some plans for this bridge, but the only drawings I could come up with were some replacement plans that were never used.

Without knowing the rest of the story it is hard to assess its true historic value, other than value of being a dying bridge technology.

I am almost certain that this bridge is not registered as a historic structure with the county or city.

Kuehn Road Bridge
Posted May 25, 2010, by Anthony Dillon (spansaver [at] hotmail [dot] com)


Although no register listing is shown on the site for this bridge, you would need to check local records to confirm this for sure. The majority of spans on this site that are not currently national or state register listed, are on here because they meet the criteria for inclusion. It is simply a matter of having someone take the time needed to submit the proper documentation and complete the process.

Looking at this bridge, I would indeed consider it historic. I do question if the 1959 build date is correct. This is a fairly light pony truss that appears to be made from I-beams that are riveted together with gusset plates. It is similar to a bridge in Bartholomew County, Indiana called the Fishers Fork Bridge, built circa 1910.


Logically, a truss bridge constructed in the 1950's would be built much heavier to carry the loads of more modern traffic. It seems possible that the given date may be from a relocation.

The same research needed for historical listing would likely uncover the facts behind the history of this span.

Kuehn Road Bridge
Posted May 25, 2010, by Debra McKrill (McKrill [at] aol [dot] com)

You have this bridge in your historic bridges of the United States catagory. Is this in fact a hisoric bridge and if so is it registered as such? Where would I find that information. Thank you.