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One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
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Title: Timber Bridges: Design, Construction, Inspection, and Maintenance Chapter 04: Preservation and Protection of Timber Bridges

Source: United States Department of Agriculture, Forest Service, Washington, DC.

Author(s)Ritter, Michael A.

Publication Year: 1990  View PDF »

Related Publications: view

Category: US Forest Service Publication

Abstract: Wood has been successfully used as a bridge material for thousands of years, but before the early 1900ís most structures were built of untreated timber. Protection from decay and deterioration was afforded by using the heartwood of naturally durable species or by covering the structure to protect it from weathering. Although many bridges constructed of untreated timber performed well (some lasting longer than 100 years), the use of untreated timber declined as naturally resistant North American wood species became unavailable in the quantities and sizes necessary for bridge construction. Additionally, it became economically and functionally impractical to cover timber bridges for protection. In spite of the attractiveness of using naturally durable wood, modem timber bridges must be preservatively treated to obtain adequate performance.

Keywords: Bridge;Wood;Preservative;Solvent;Drying;Glulam; the timber bridge manual;

File size: 690 kb(s)

Date posted: 06/02/2009
Current FPL Scientist associated with this product
Ritter, Michael A.
Assistant Director
  

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