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  1. Overview of the National Timber Bridge Inspection Study

    As many engineers begin to implement life cycle cost analyses within the preliminary bridge design phase, there is a significant need for more reliable data on the expected service life of highway bridges. Many claims are being made about the expected longevity of concrete and steel bridges, but few are based on actual performance data. Because engineers are least...

    Author(s):
    James P. Wacker; Brian K. Brashaw; Frank Jalinoos
    Year:
    2013
    Keywords:
    bridge, inspection, nondestructive evaluation, service life, durability, condition
    Source:
    USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-226. pp. 610-615.

  2. A Field Assessment of Timber Highway Bridge Durability in the United States

    This paper summarizes a cooperative project to assess the current condition and life expectancy of 132 timber highway bridge superstructures at locations throughout the United States. Several superstructure types were included in this comprehensive effort, of which two-thirds were sawn timber stringer systems. In-depth inspections were conducted by the project team...

    Author(s):
    J.P. Wacker; B.K. Brashaw; F. Jalinoos
    Year:
    2015
    Keywords:
    Bridge, Inspection, Nondestructive, Decay, Conditon, Timber, Service Life
    Source:
    In: Structures Congress 2015; Proceedings of the 2015 Structures Congress April 23-25, 2015 Portland, Oregon, pp. 278-286.
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