File:View southwest, elevation east - Laroque Bridge, Spanning New Haven River at State Route 116, Bristol, Addison County, VT HAER VT,1-BRIS,1-3.tif

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View southwest, elevation east - Laroque Bridge, Spanning New Haven River at State Route 116, Bristol, Addison County, VT
Photographer
Bridge Hill Studio, creator
Title
View southwest, elevation east - Laroque Bridge, Spanning New Haven River at State Route 116, Bristol, Addison County, VT
Description
McClintic-Marshall Company; Byron, Forman and RIggs; Sundaram, Sivanuja S, historian
Depicted place Vermont; Addison County; Bristol
Date 1990
date QS:P571,+1990-00-00T00:00:00Z/9
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 VT,1-BRIS,1-3
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 bridge is typical of the engineering practice of the early 20th Century. By that time, two basic truss designs Warren and Pratt had replaced the variety of types which characterized the 19th Century. Riveted construction was almost universal. In the heaviness of its members and concrete slab floor, the bridge reflects the growing use of automobiles and trucks in the 1920s. This truss is identical to the standard bridges built in the late 1920s except that it uses built-up members instead of rolled I-beams. These members cost more but were lighter than equivalent rolled sections. Like most flood-era bridges, built in late 1920s it has a curved top chord. Though more costly to fabricate, curved chords saved money in heavy-service bridges like this relatively long and wide concrete decked span, since the truss has extra depth only in the middle where it was needed to counter bending forces. McClintic-Marshall Company was a Pennsylvania based fabricator which advertised heavily for New England business in the 1920s. This Company built the Bath bridge in Maine as well as four other Vermont bridges.
  • Survey number: HAER VT-21
  • Building/structure dates: 1925 Initial Construction
Source https://www.loc.gov/pictures/item/vt0114.photos.369629p
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.

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