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Goldens Bridge

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New York & Mahopac Railroad, Bridge L-158, Schoolhouse Road, Goldens Bridge, Westchester County, NY



B&W Photos

HB864646

HB864647


Data Pages


Photo Caption Pages


Item Title


Location
Schoolhouse Road, Goldens Bridge, NY

Find maps of Goldens Bridge, NY


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER NY-148
Building/structure dates: 1883 initial construction
Building/structure dates: 1904
Significance: The development of the metal truss bridge in America largely paralleled the needs of the railroads, and the through-truss double-intersection form patented by Squire Whipple in 1846 and modified by John W. Murphey in 1863 was one of the most popular, playing a major part in railroad bridge building between 1860 and 1885. The form evolved out of the economic and technological necessity of retaining the small panel size, yet increasing the depth (and thereby increasing the strength) of the truss. As the most efficient angle for a diagonal member was 45 degrees, it followed that the height of the truss increased, so the number of panels that the diagonal needed to cross would increase. Bridge L-158 is an excellent example of the double-intersection form at the height of its popularity.

Subjects
Railroad Bridges
Railroad Companies
Railroad Industry


Related Names
Clark, Reeves & Company
North River Construction Company
Phoenix Iron Company
Murphey, John W.


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. PHOTOCOPY OF RECONSTRUCTION DRAWING SHOWING DETAILS OF LATERAL BRACING AND END BEARING CONDITIONS.
2. PHOTOCOPY OF RECONSTRUCTION DRAWING OF SHOWING DETAILS OF LATERAL BRACING SYSTEM


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