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File:DOWNSTREAM ELEVATION, LOOKING S - Mill Rock Bridge, Spanning Big Bear Creek, Monmouth, Jackson County, IA HAER IOWA,49-MONMO,1-4.tif

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SummaryEdit

Title DOWNSTREAM ELEVATION, LOOKING S - Mill Rock Bridge, Spanning Big Bear Creek, Monmouth, Jackson County, IA
Depicted place Iowa; Jackson County; Monmouth
Date Documentation compiled after 1968
Dimensions 4 x 5 in.
Photographer

Related names:

Clinton Bridge and Iron Works
Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print
Accession number HAER IOWA,49-MONMO,1-4
Credit line
Historic American Buildings Survey (HABS) Team.jpg This file comes from the Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER) or Historic American Landscapes Survey (HALS). These are programs of the National Park Service established for the purpose of documenting historic places. Records consist of measured drawings, archival photographs, and written reports.

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Notes
  • Significance: The Mill Rock Bridge was erected by Clinton Bridge & Iron Works, a major Iowa bridge contractor. It is locally significant as an early instance of the use of riveted connections and concrete deck in county bridge construction. These were among features which were to become standard in subsequent decades due to the establishment of the Iowa State Highway Commission and the Commission's enforcement of design standards for various kinds of crossings. Because the Mill Rock Bridge does not display all features associated with this standardization program, it may be considered an illustration of the transition from county to state control of local bridge design and construction.
  • Survey number: HAER IA-7
  • Building/structure dates: 1913 Initial Construction
Source https://www.loc.gov/pictures/item/ia0116.photos.067903p
Permission
(Reusing this file)
Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.
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Object location42° 04′ 36.98″ N, 90° 52′ 46.99″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMap - Google Earthinfo

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current12:48, 13 July 2014Thumbnail for version as of 12:48, 13 July 20144,918 × 3,935 (18.46 MB) (talk | contribs)GWToolset: Creating mediafile for Fæ. HABS 11 July 2014 (1001:1200)
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