File:DETAIL VIEW SHOWING BOTTOM CHORD CONNCTIONS AND 'CAMBER' (OR SLIGHT ARCH) OF THE BOTTOM CHORD. - Old Mill Road Bridge, Spanning Owens Creek on Old Mill Road, Rocky Ridge, HAER MD,11-ROCRI.V,1-4.tif

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DETAIL VIEW SHOWING BOTTOM CHORD CONNCTIONS AND 'CAMBER' (OR SLIGHT ARCH) OF THE BOTTOM CHORD. - Old Mill Road Bridge, Spanning Owens Creek on Old Mill Road, Rocky Ridge, Frederick County, MD
Title
DETAIL VIEW SHOWING BOTTOM CHORD CONNCTIONS AND 'CAMBER' (OR SLIGHT ARCH) OF THE BOTTOM CHORD. - Old Mill Road Bridge, Spanning Owens Creek on Old Mill Road, Rocky Ridge, Frederick County, MD
Description
Pittsburg Bridge Company; Jandoli, Liz, transmitter
Depicted place Maryland; Frederick County; Rocky Ridge
Date Documentation compiled after 1968
Dimensions 4 x 5 in.
Current location
Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print
Accession number
HAER MD,11-ROCRI.V,1-4
Credit line
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.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

Notes
  • Significance: This is a well preserved example of a Pratt Through Truss bridge with pin connections. As of 1983, it is the only bridge known to survive in the United States that can be directly attributed to the Pittsburgh Bridge Company. Though built in the standard Pratt configuration (vertical compression members, diagonal diagonal tension members) the Old Mill Road Bridge is distinguished by its use of riveted floor beams rather than rolled floor beams. In line with the bridge's name there are the ruins of a mill located approximately 75 yards west of the structure. Almost certainly the bridge was built to provide access to the mill. It is also likely that the present bridge was not the first built on the site. The Old Mill Road Bridge is listed on the National Register of Historic Places.
  • Survey number: HAER MD-36
  • Building/structure dates: 1882 Initial Construction
References

This is an image of a place or building that is listed on the National Register of Historic Places in the United States of America. Its reference number is 79001131.
Source https://www.loc.gov/pictures/item/md0945.photos.081843p
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.
Object location39° 36′ 18″ N, 77° 19′ 04.01″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current15:08, 22 July 2014Thumbnail for version as of 15:08, 22 July 20144,558 × 3,616 (15.72 MB)Fæ (talk | contribs)GWToolset: Creating mediafile for Fæ. HABS 21 July 2014 (1601:1800)

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