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File:Moffett Creek Bridge, Spanning Moffett Creek at Old Columbia River Highway, Warrendale, Multnomah County, OR HAER ORE,26-WARDA,1- (sheet 1 of 2).tif

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HAER ORE,26-WARDA,1- (sheet 1 of 2) - Moffett Creek Bridge, Spanning Moffett Creek at Old Columbia River Highway, Warrendale, Multnomah County, OR
Photographer

Related names:

Metzger, L W
Oregon Department of Transportation
Bennett, transmitter
Title
HAER ORE,26-WARDA,1- (sheet 1 of 2) - Moffett Creek Bridge, Spanning Moffett Creek at Old Columbia River Highway, Warrendale, Multnomah County, OR
Depicted place Oregon; Multnomah County; Warrendale
Date Documentation compiled after 1968
Dimensions 24 x 36 in. (D size)
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 ORE,26-WARDA,1- (sheet 1 of 2)
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: Moffett Creek Bridge, designed by L.W. Metzger, is considered one of the most unique bridges along the Old Columbia River Highway. The 205 foot structure has an arched span of 170 feet and is 70 feet above Moffett Creek. The bridge is designed to pivot with expansion and contraction caused by the weather on three massive cast iron hinges, one at each abutment and one in the center of the span. At the time of its construction in 1915, it was the largest three-hinged arch in the world. The arch rises only one foot for every ten feet of length. The two arched ribs were designed for a load of 200,000 lbs. distributed uniformly over half the span. The beams and floor span were designed for a twenty ton load. There is a date plaque shield on both sides of the central hinge. There are about 150 precast reinforced concrete posts making up the handrails on each side of the bridge.
  • Unprocessed Field note material exists for this structure: FN-30
  • Survey number: HAER OR-49
  • Building/structure dates: 1915 Initial Construction
Source https://www.loc.gov/pictures/item/or0272.sheet.00001a
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° 36′ 46.01″ N, 122° 00′ 51.98″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current06:03, 2 August 2014Thumbnail for version as of 06:03, 2 August 201414,480 × 9,632 (1.17 MB)Fæ (talk | contribs)GWToolset: Creating mediafile for Fæ. HABS 2014-08-01 2601-2900 missing

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