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Top 20 Directory:
Top : Science : Technology : Structural_Engineering : Bridge : History
  		• Bridge Builders
  		• Historic Bridges
    Sites:
  		• A Treatise on Bracing With its Application to Bridges and Other Structures of Wood or Iron: Full text of Bow's 1874 publication.
  		• Bridge Signs: Douglas Coulter's collection of bridge maker's plates from wrought iron bridges of Illinois. Also features photographs of covered and iron bridges, and bridge postcards.
  		• Building a Bridge: The story of the rebuilding of a bridge over the Blyth between Heveningham and Ubbeston in 1794.
  		• China Bridge: Discover how China's Song dynasty during the eleventh and twelfth centuries used the high arch "rainbow bridge" to solve the problem of spanning a fast-moving river without impeding boat traffic. Nova online.
  		• Context for World Heritage Bridges: Contextual essay with bridge design and construction dealt with chronologically by material and by type. Includes bibliography and list of potential World Heritage bridges.
  		• English versus American Bridges: Discussion on the merits of English and American iron bridges. Published in the 1874 edition of the Railway Gazette.
  		• Historical Development of Iron and Steel in Bridges: Reviews the development of steel bridge construction, demonstrating how improvements in methods and understanding of structural behaviour have enabled greater efficiency and longer spans. Includes illustrations.
  		• Instructions on Modern American Bridge Building: Full text of George Tower's illustrated book first published in 1874.
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