File:AERIAL VIEW OF THE EASTERN SPAN OF THE BRIDGE. THE HIGHWAY BRIDGE IN THE MIDDLE DISTANCE IS A WICHERT TRUSS, CONSTRUCTED IN 1939-1940 BY THE J.E. GREINER COMPANY. A PENNSYLVANIA HAER MD,13-HAV,4-10.tif

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Title
AERIAL VIEW OF THE EASTERN SPAN OF THE BRIDGE. THE HIGHWAY BRIDGE IN THE MIDDLE DISTANCE IS A WICHERT TRUSS, CONSTRUCTED IN 1939-1940 BY THE J.E. GREINER COMPANY. A PENNSYLVANIA RAILROAD BRIDGE IS VISIBLE IN THE FAR DISTANCE. - Susquehanna River Bridge, Spanning Susquehanna River, Havre de Grace, Harford County, MD
Description
American Bridge Company
Depicted place Maryland; Harford County; Havre de Grace
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,13-HAV,4-10
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 Susquehanna River Bridge was constructed in 1908 to replace an older, timber Howe truss structure. The first bridge built by the B.O. Railroad on this site consisted of twelve 250 foot spans, with a shorter deck truss in the center of the bridge. This structure has been said to have marked the zenith of Howe truss railway bridge construction. The existing bridge consists of a variety of Pennsylvania and Pratt trusses. The Pennsylvania trusses, one over each channel, are through trusses, and provide clearance for river traffic. The Pratt trusses are deck trusses. Three trusses carry the bridge over the eastern channel of the Susquehanna, twenty plat girders serve to cross Garrett Island, and a series (east to west) of six Pratt trusses, a Pennsylvania truss, and two more Pratt trusses carry the bridge to its western abutment. In addition, there are two approach spans, one at either end of the bridge.
  • Survey number: HAER MD-46
  • Building/structure dates: 1908 Initial Construction
Source https://www.loc.gov/pictures/item/md0961.photos.082062p
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° 32′ 57.01″ N, 76° 05′ 30.98″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current16:45, 22 July 2014Thumbnail for version as of 16:45, 22 July 20144,597 × 3,546 (15.55 MB)Fæ (talk | contribs)GWToolset: Creating mediafile for Fæ. HABS 21 July 2014 (1601:1800)

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