McKenzie Bridge
Description
The McKenzie River Bridge at McKenzie Bridge was a very unique structure that was designed by the Oregon State Highway Department under State Bridge Engineer Conde B. McCullough.The bridge featured one of a kind details such as the 100-foot long concrete encased steel pony truss that is shaped to appear as an elegant concrete arch bridge. The 100-foot main truss was suspended between two 15-foot long reinforced concrete cantilevered arched arms giving the main span a total length of 130-feet.
The approach spans consisted of 50-foot long reinforced concrete girders with the exterior girders arched to seamlessly blend with the arched main span.
The bridge featured a a 24-foot wide roadway and 4-foot wide sidewalks along each side protected by a standard OSHD baluster railing that is still seen on many of Oregon's remaining concrete bridges from the era.
The bridge was built in 1929 and was replaced with a pre-stressed concrete box girder bridge in 1968.
Facts
- Overview
- Lost Concrete encased pony truss bridge over McKenzie River on OR-126 McKenzie Highway
- Location
- Lane County, Oregon
- Status
- Replaced by a new bridge
- History
- Built 1929. Replaced 1968
- Builder
- - Conde B. McCullough of Redfield, South Dakota
- Design
- Parker pony truss encased in concrete.
- Dimensions
-
Length of largest span: 130.0 ft.
Total length: 230.0 ft.
Deck width: 24.0 ft.
- Approximate latitude, longitude
- +44.17408, -122.16137 (decimal degrees)
44°10'27" N, 122°09'41" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 10/567039/4891549 (zone/easting/northing)
- Elevation
- 1343 ft. above sea level
- Inventory number
- BH 95414 (Bridgehunter.com ID)
Update Log
- June 6, 2022: Updated by Mike Goff: Added category "Conde B. McCullough", added description.
- December 9, 2021: New photo from Geoff Hubbs
Comments
Goeff: Wow, this is a great find! Note the diagonal members... extremely rare with bridges of this type. Compare this this: https://historicbridges.org/bridges/browser/?bridgebrowser=p...
This page's URL is http://bridgehunter.com/or/lane/mckenzie/
I'll see if I can dig anything up about the design features of this bridge. It appears to be a concrete encased arch/truss of some sort. It has Oregon's standard rail for that time so there may be something in the records. Great photo find Geoff!