Rating:
2 votes

Old Elkhorn Ave Bridge

Photo 

Overview

https://www.flickr.com/photos/abstractstv/5262900306/in/pool...

https://www.flickr.com/photos/abstractstv/5262900306/in/pool-39289335@N00/

License: Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

View this photo on Flickr

BH Photo #293712

Map 

Street View 

Facts 

Overview
Concrete pony arch bridge over Fresno Slough on an old alignment of Elkhorn Ave
Location
Fresno County, California
Status
Open to pedestrians only
History
Built 1916;
Design
Concrete Pennsylvania Pony Truss, or maybe a Concrete pony arch
Also called
Burrel Bridge
Approximate latitude, longitude
+36.48528, -120.00493   (decimal degrees)
36°29'07" N, 120°00'18" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/768310/4041946 (zone/easting/northing)
Quadrangle map:
Five Points
Inventory number
BH 62921 (Bridgehunter.com ID)

Update Log 

  • September 7, 2014: Updated by Fmiser: Changed design from "concrete arch" to "concrete pennsylvania pony", added construction year.
  • September 6, 2014: New Street View added by James McCray

Sources 

  • James McCray - jamesinslocomb [at] yahoo [dot] com
  • Fmiser - fmiser [at] gmail [dot] com

Comments 

Old Elkhorn Ave Bridge
Posted September 7, 2014, by Fmiser (fmiser [at] gmail [dot] com)

Clearly shaped like a Pennsylvania truss. Does it function like a truss? I don't know. I don't think it's really an arch, but without stress/load measurements it can be tricky to figure out what it _acts_ like - but it _looks_ like a Pennsylvania truss.

It can't be plain concrete as those diagonals are under tension - and concrete is nearly useless under tension.

The construction date is from a comment on the Flicker page.

Nice find!!

Old Elkhorn Ave Bridge
Posted September 7, 2014, by Matt Lohry

Looking at the upper chord, I believe this may actually be an extremely rare concrete pony truss, perhaps even a Pennsylvania, which would certainly be the only one I've ever seen! I think this because the upper chord is polygonal whereas rainbow arch chords are smoothly curved, and also, the web members clearly show the Pennsylvania truss configuration. I can't tell if it's fully concrete or concrete-encased steel, but very unique either way!

Old Elkhorn Ave Bridge
Posted September 7, 2014, by Robert Elder (robertelder1 [at] gmail [dot] com)

It is clearly a Rainbow Arch, but I doubt it is a Marsh Arch. Marsh Arch bridges don't seem to have diagonal members - at least not that I have encountered.

Old Elkhorn Ave Bridge
Posted September 6, 2014, by James McCray (jamesinslocomb [at] yahoo [dot] com)

Found this awesome bridge! Not on NBI, and not previously listed on here. Now, is this a "Marsh Arch?" Or is it something else? I just listed it as generic "Concrete Pony Arch." Anyone with more info please comment.