Thomas Willis Pratt


Thomas Willis Pratt, (born 1812, Boston, Massachusetts)[1] was an American engineer. He is best known for his 1844 patent for the Pratt truss, which he designed with his father, Caleb Pratt.[2] Pratt also surveyed the route of the Providence and Worcester Railroad in 1844.[3] He died in 1875.

Thomas and Caleb's Pratt Truss


  1. ^ Evans, June; Evans, Benjamin (2004). New England's Covered Bridges. University Press of New England. pp. Page 8. ISBN 1-58465-320-5.
  2. ^ "Historic Bridges of Iowa". Retrieved February 8, 2008.
  3. ^ Lewis, Edward A. (1973). The Blackstone Valley Line: The Story of the Blackstone Canal Company and the Providence & Worcester Railroad. Seekonk, Massachusetts: The Baggage Car. p. 13. OCLC 2685548.