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Fig. 25 | Built Heritage

Fig. 25

From: In search of America’s old covered bridges

Fig. 25

These three views of Perrine’s Bridge in 2021 reveal that the arches are secure and stabilized as well as all the siding in place. The 1968 construction documents detailed the use of metal reinforcements associated with the arches and lower chords. With the arches, where old wood abutted new wood, ½ inch steel plates were bolted above and below. The lower chord that runs the full length of the span was strengthened with 78 bowtie-shaped overlapping fishplates of various sizes where the timbers were spliced. The exposed section of the arch was creosoted in 1968 and subsequently sheathed with a metal sleeve (Source: Ronald G. Knapp photograph, interior February 2, 2021; exterior January 28, 2021)

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