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100th Street Bridge

Photos 

The west portal

Photo taken by J.R. Manning in August 2007

BH Photo #109792

Map 

Facts 

Overview
Pony truss bridge over Dowd Creek on 100th Street
Location
Marshall County, Iowa, and Hardin County, Iowa
Status
Open to traffic
History
Built 1916 by the Des Moines Bridge & Iron Co.; rehabilitated 1950
Builders
- Des Moines Bridge & Iron Co./Works of Des Moines, Iowa
- Iowa State Highway Commission of Ames, Iowa
Design
Warren pony truss
Dimensions
Length of largest span: 55.1 ft.
Total length: 57.1 ft.
Deck width: 17.1 ft.
Approximate latitude, longitude
+42.20919, -93.01048   (decimal degrees)
42°12'33" N, 93°00'38" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/499134/4673003 (zone/easting/northing)
Quadrangle map:
Union
Land survey
T. 85 N., R. 19 W., Sec. 1
Inventory numbers
IA 244200 (Iowa bridge number)
BH 14015 (Bridgehunter.com ID)
Inspection (as of 11/2015)
Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Serious (3 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 23.5 (out of 100)
Average daily traffic (as of 2013)
15

Update Log 

  • September 23, 2013: Updated by Luke Harden: Added builder
  • February 20, 2010: Updated by J.R. Manning: Updated bridge data
  • January 26, 2008: New photos from J.R. Manning

Sources 

  • J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
  • Luke