Guide for In-Place Preservative Treatment of Covered Bridges

Wood that is exposed to moisture is vulnerable to attack by decay fungi and insects. Covered bridges were designed to prevent such biodeterioration by keeping the wood dry. However, protecting all bridge members from moisture is difficult, even in well-designed and well-maintained covered bridges. Members used in abutments near the ends of bridges are especially vulnerable. Other areas may also be exposed when leaks go undetected or vandals remove cladding that protects the bridge interior. In all these situations, the integrity of critical bridge members can be extended by field application of preservative treatments. In this research project, the principal investigator develops a guide that will allow bridge maintenance personnel to select and effectively apply appropriate in-place treatment.


    • English


    • Status: Active
    • Contract Numbers:


    • Sponsor Organizations:

      National Center for Wood Transportation Structures

      Iowa State University, 2711 S Loop Srive
      Ames, IA  USA  50010
    • Performing Organizations:

      Forest Products Laboratory

      P.O. Box 5130, North Walnut Street
      Madison, WI  USA  53705
    • Principal Investigators:

      Lebow, Steve

    • Start Date: 20090000
    • Actual Completion Date: 20100000
    • Source Data: RiP Project 28048

    Subject/Index Terms

    Filing Info

    • Accession Number: 01463701
    • Record Type: Research project
    • Source Agency: National Center for Wood Transportation Structures
    • Contract Numbers: RIP-4723-012
    • Files: RiP
    • Created Date: Jan 3 2013 2:28PM