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  2. top of the aat hierarchies
  3. Objects Facet
  4. Built Environment (hierarchy name)
  5. Single Built Works (hierarchy name)
  6. single built works (built environment)
  7. [single built works by specific type]
  8. [single built works by function]
  9. transportation structures
  10. [transportation structures by form]
  11. bridges (built works)
  12. [bridges by function]
  13. footbridges
  14. skybridges
Scope note
Bridgelike structures for pedestrians built to link one building with another across an alley or street; (RHDEL2) for the network of interconnecting walkways incorporating skybridges, use "skywalks."
Accepted term: 15-Jul-2024