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Rock Valley Bridge

Photos 

Overall View Of Bridge And Lincoln Highway, Showing North Approach To Bridge. View To South

Photo by Clayton B. Fraser, September 1988, for HAER

View photos at Library of Congress

BH Photo #123667

Map 

Facts 

Overview
Lost Marsh arch bridge over North Timber Creek on Shady Oaks Road, Old Lincoln Highway
Location
Marshall County, Iowa
Status
Lost
History
Built 1918; Demolished circa 2000
Builders
- Alexander & Higby of Des Moines, Iowa
- Marsh Engineering Co. of Des Moines, Iowa
Design
"The Rock Valley Bridge represents the culmination of an extensive concrete bridge construction program undertaken by Marshall County in the 1910s. It is the only span built by the county on the Lincoln Highway, America's first transcontinental route. This medium-span, reinforced concrete rainbow arch is a representative example of the hundreds of such structures designed and marketed by their inventor, Des Moines engineer James B. Marsh. Dozens of rainbow arches were built in Iowa in the 1910s, 20s, and 30s. Now only eleven remain, most in deteriorating condition."

Clayton B. Fraser
Principal, FRASERdesign
Loveland, Colorado 80537
October 1988

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Dimensions
Length of largest span: 110.0 ft.
Total length: 158.0 ft.
Deck width: 20.0 ft.
Approximate latitude, longitude
+42.01330, -92.85625   (decimal degrees)
42°00'48" N, 92°51'23" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/511902/4651262 (zone/easting/northing)
Quadrangle map:
Le Grand
Inventory number
BH 37403 (Bridgehunter.com ID)

Update Log 

  • September 11, 2008: Added by J.R. Manning

Sources 

  • J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
  • HAER IA-29 - Rock Valley Bridge