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In search of America's old covered bridges

Built Heritage 2021年第2期5卷 16-38页

作者： Ronald G.Knapp state University of New York PO Box 365New PaltzNY 12561-0365USA

America's first documented wooden covered bridge was erected at Philadelphia,Pennsylvania in *** were constructed within two decades and at least 10,000 by the later *** settlers moved West,broad rivers were crossed with inventive structures incorporating timber trusses ingeniously developed by *** covered bridges because of the roof and siding needed to protect the timber trusses,they became ubiquitous features on the American *** the past two centuries,most covered bridges were lost to flood,ice,arson,lightening,decay,as well as"progress,"replaced by"modern"iron,concrete,and steel *** some 700 covered bridges remaining,many are mere replicas of their original forms no longer supported by timber *** historic bridges remain largely from the last half of the 1800s while civic boosterism has led to claims of earlier dates with often questionable *** essay presents three wooden covered bridges constructed in the 1820s along a 10-mile stretch of the Wallkill River in New Paltz,New *** the three,only perrine's bridge,constructed first in 1821 and covered in 1822,is still standing with intact Burr timber ***'s is an iconic structure with exceptional heritage value because of authentic re-building and restoration in 1834,1846,1917,and *** documentary records,this essay establishes an accurate intertwined chronology for the three bridges,detailing nineteenth century building practices and contentious mid-twentieth century struggles pitting preservationists wanting authentic restoration against those wanting removal.

关键词： Covered bridge Timber truss Burr truss Town lattice truss perrine's bridge New Palt bridge Phillies bridge New York state New Paltz Conservation Restoration

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