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13.) Why are covered bridges covered?
To keep the trusses dry. Timothy Palmer, b. 1751, d. 1821 believed to be the first American
bridge builder to advocate roofing bridges, estimating that the life of a wooden bridge would be
extended by as much as forty years.
Joe Nelson, P.O Box 267, Jericho, VT 05465-0267, email@example.com
Content © Copyright 1997 Joseph C. Nelson
This file updated 12-26-99