Elkader Keystone Bridge

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Elkader Keystone Bridge
Elkader Keystone Bridge.jpg
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LocationBridge Street
Elkader, Iowa
Coordinates 42°51′18″N91°24′13″W / 42.85500°N 91.40361°W / 42.85500; -91.40361 Coordinates: 42°51′18″N91°24′13″W / 42.85500°N 91.40361°W / 42.85500; -91.40361
Built1889
Built byByrne and Blade
ArchitectM. Tschirgi
Architectural style Closed-spandrel deck arch bridge
NRHP reference No. 76000747 [1]
Added to NRHPNovember 7, 1976

The Elkader Keystone Bridge is a historic structure located in Elkader, Iowa, United States. The old iron truss bridge that crossed the Turkey River at this location was declared unsafe in 1888. The Clayton County Board of Supervisors decided to construct a bridge of native limestone as way of saving money and providing a reliable crossing. Engineer M. Tschirgi designed the structure and Dubuque stonemasons Byrne and Blade constructed the bridge. It was built at a cost of $16,282, and spans the river for 346 feet (105 m). [2] This is one of the largest twin arched keystone bridges west of the Mississippi River. [3] A sidewalk was added on the north side of the structure in 1924. The bridge was individually listed on the National Register of Historic Places in 1976. [1]

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References

  1. 1 2 "National Register Information System". National Register of Historic Places . National Park Service. March 13, 2009.
  2. "Keystone Bridge". Elkader, Iowa. Retrieved 2016-09-02.
  3. Marjorie C. Costigan. "Elkader Keystone Bridge". National Park Service . Retrieved 2016-09-02. with photos