FACTORS AFFECTING TIMBER BRIDGE DECISIONS: A CASE ANALYSIS IN VIRGINIA AND WISCONSIN

The number of timber bridges in the United States has declined by nearly 50% since 1980. This decline may be attributed to various factors affecting the choice of a bridge material, including the cost of timber bridges versus the cost of competing materials. This article presents the factors affecting the choice of bridge materials, as well as recent costs of timber bridges in two states: Virginia and Wisconsin. A survey was mailed to U.S. highway officials to identify important factors in the bridge decision. The survey identified the most important factors in the choice of a bridge material as the past performance of the material, expected lifespan of the material, maintenance requirements, resistance to natural deterioration, initial cost and life cycle cost of the material. The recent costs of timber bridges in Virginia ranged between $413/sq m to $925/sq m for the superstructure only. The recent costs of Wisconsin timber bridges ranged from $419/sq m to $615/sq m for superstructure only. These costs were higher than reported average costs for prestressed or reinforced concrete bridges.

  • Corporate Authors:

    GORDON AND BREACH SCIENCE PUB.

    AMSTERDAM:
    ,    
  • Authors:
    • Smith, R
    • Gomez, J
    • Bush, R
  • Publication Date: 1998

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00962863
  • Record Type: Publication
  • Report/Paper Numbers: WIT-10-0007
  • Files: TRIS
  • Created Date: Sep 15 2003 12:00AM