Bridgehunter.com | IAIS Big Bear Creek Bridge

Share:

Photos

Photo taken by Doug Lambert

Overview: Truss bridge on railroad over Big Bear Creek
Location: Iowa County, Iowa
Status: Open to traffic
Design: Quadrangular lattice through truss
Approximate latitude, longitude: +41.78600, -92.09167 (decimal degrees)
41°47'10" N, 92°05'30" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/575477/4626415 (zone/easting/northing)
USGS topographic map: Marengo
Inventory number: BH 51074 (Bridgehunter.com ID)

March 5, 2013: New photo from Luke Harden
March 4, 2013: New photo from Luke Harden
February 20, 2013: New photo from Luke Harden
June 27, 2012: Updated by Luke Harden: Consensus is it's a quadrangular truss , so I listed it as a quad-lattice truss
June 27, 2012: Updated by Fmiser: changed type
January 25, 2012: Updated by Luke Harden: Added category "Big Bear Creek"
January 24, 2012: Updated by Luke Harden: Added category "Iowa Interstate Railroad"

IAIS Big Bear Creek Bridge

Posted June 27, 2012, by Fmiser (fmiser [at] gmail [dot] com)

A whipple would have verticals. This one does not. It matches what I understand to be a warren quadrangular or lattice truss.

IAIS Big Bear Creek Bridge

Posted June 27, 2012, by John Marvig (johnmarvig [at] chaska [dot] net)

It looks like a short variation of the Quadrangular truss. I don't think it is whipple though. But I could be wrong. Compare it to this bridge.

IAIS Big Bear Creek Bridge

Posted June 27, 2012, by Robert Elder (robertelder1 [at] gmail [dot] com)

Looks like a quadruple intersectional Lattice truss to me.

IAIS Big Bear Creek Bridge

Posted June 27, 2012, by Luke Harden (lmharden [at] iastate [dot] edu)

So what kind of truss is this? Looks like a Whipple.