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Lower Plymouth Rock Bridge


Overall View Of Bridge And County Road. View To West

Photo by Clayton B. Fraser, November 1985, for HAER

View photos at Library of Congress

BH Photo #124419


Lost Bowstring through truss bridge over Upper Iowa River on Cold Water Creek Road in Fremont Township
Winneshiek County, Iowa
Built 1877 by Wrought Iron Bridge Co.; replaced in 1986
- Wrought Iron Bridge Co. of Canton, Ohio
"The Lower Plymouth Rock Bridge is one of the few intact examples remaining of what had once been the standard rural roadway bridge type of the 1870s in America: the bowstring arch-truss. This patented tubular arch design was marketed extensively throughout the United States and Canada by the Wrought Iron Bridge Company of Canton, Ohio, one of this country's most important 19th century iron bridge fabricators. The Lower Plymouth Rock Bridge is the oldest bowstring remaining in its original position in Winneshiek County.

Clayton B. Fraser, January 1986

Length of largest span: 128.0 ft.
Total length: 130.0 ft.
Deck width: 18.0 ft.
Approximate latitude, longitude
+43.43171, -91.99725   (decimal degrees)
43°25'54" N, 91°59'50" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/581158/4809245 (zone/easting/northing)
Quadrangle map:
Inventory number
BH 37428 (Bridgehunter.com ID)

Update Log 

  • January 30, 2011: Updated by Anthony Dillon: Fixed coordinates of this lost span
  • January 13, 2010: Updated by Jason Smith: Bridge has been replaced- see changes above
  • September 14, 2008: Added by J.R. Manning


  • J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
  • HAER IA-18 - Lower Plymouth Rock Bridge
  • Jason Smith - flensburg [dot] bridgehunter [dot] av [at] googlemail [dot] com
  • Tony Dillon - spansaver [at] hotmail [dot] com