page_title: Lattice truss bridge
section_title: Wood lattice truss bridges
hierarchical_section_title: Lattice truss bridge / Wood lattice truss bridges
caption_attribution_description: English: Root Road Townsend Lattice Truss
context_page_description: A lattice bridge is a form of truss bridge that uses many small, closely spaced diagonal elements forming a lattice. The lattice Truss Bridge was patented in 1820 by architect Ithiel Town.
  Originally a design to allow a substantial bridge to be made from planks employing lower–skilled labor, rather than heavy timbers and more expensive carpenters, this type of bridge has also been constructed using many relatively light iron or steel members. The individual elements are more easily handled by the construction workers, but the bridge also requires substantial support during construction. A simple lattice truss will transform the applied loads into a thrust, as the bridge will tend to change length under load. This is resisted by pinning the lattice members to the top and bottom chords, which are more substantial than the lattice members, but which may also be fabricated from relatively small elements rather than large beams.
context_section_description: Bartonsville Covered Bridge
  Brown Covered Bridge
  Burt Henry Covered Bridge
  Cornish-Windsor Covered Bridge
  Euharlee Covered Bridge
  Kingsley Covered Bridge
  Newton Falls Covered Bridge, Newton Falls, Ohio
  Poole's Mill Covered Bridge
  Root Road Covered Bridge
  Waterford Covered Bridge
  Watson Mill Covered Bridge
  Windsor Mills Covered Bridge
  Worrall Covered Bridge
  Frankenfield Covered Bridge
  Zehnder's Holz Brucke
  Uhlerstown Covered Bridge, Pennsylvania
caption: Root Road Covered Bridge, Ashtabula County, Ohio
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