File:Detail view of reinforced concrete arched balustrade railing. - Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Portland, Multnomah County, OR HAER OR-102-14.tif

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Summary[edit]

Detail view of reinforced concrete arched balustrade railing. - Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Portland, Multnomah County, OR
Photographer

Related names:

Lindenthal, Gustav; Houghtaling and Dougan; Booth and Pomeroy; Lindstrom and Feigenson; Parker-Schram; Edlefsen-Weygandt; Pacific Bridge; Jaggar-Sroufe; American Bridge Company; Oregon Department of Transportation; Wortman, Edward J; Sears, Hannah, transmitter; O'Connell, Kristen, transmitter; Wortman, Sharon Wood, historian; Norman, James, photographer; Schwab, Leslie, photographer
Title
Detail view of reinforced concrete arched balustrade railing. - Ross Island Bridge, Spanning Willamette River at Powell Boulevard, Portland, Multnomah County, OR
Depicted place Oregon; Multnomah County; Portland
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 OR-102-14
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: The Ross Island Bridge is one in an ensemble of twelve monumental highway bridges across the lower Willamette River. It is one of five Portland spans (with Burnside, Sellwood, Lovejoy Viaduct, and the Broadway Bridge) associated with Gustav Lindenthal during the period 1924-1928. The Portland bridges were the last of this master engineer's career, with Ross Island a rare example of a Lindenthal highway-only deck truss. In Oregon, Ross Island is also: 1) one of 215 known highway truss bridges of any type or age surviving; 2) one of seven known cantilever highway trusses; 3) the only known cantilever highway deck truss, made further unique among cantilever trusses because it was designed without a suspended center span, thereby incorrectly appearing to be an arch bridge. Ross Island is also significant because of its unusually finely subdivided Warren truss side spans. Created almost exclusively for motor vehicles, Ross Island was the first fixed-span (designed not to raise for river traffic) Willamette River bridge in downtown Portland, and was the first river bridge in the central city's history to be designed without trolley tracks.
  • Survey number: HAER OR-102
  • Building/structure dates: 1926
Source https://www.loc.gov/pictures/item/or0471.photos.200091p
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 location45° 31′ 25″ N, 122° 40′ 30″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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