Editing Truss bridge (section)

=== Pennsylvania (Petit) truss ===
[[File:Pennsylvania-truss.svg|thumb]]
[[File:Fair Oaks Bridge.jpg|thumb|The [[Fair Oaks Bridge]] is an example of Pennsylvania Petit truss bridge.]]
The '''Pennsylvania (Petit) truss''' is a variation on the [[#Pratt truss|Pratt truss]].<ref>{{Cite web |title=NCDOT: Truss Bridges |url=https://www.ncdot.gov/initiatives-policies/Transportation/bridges/historic-bridges/bridge-types/Pages/truss.aspx |access-date=2024-10-28 |website=NCDOT |language=en-US}}</ref> The Pratt truss includes braced diagonal members in all panels; the Pennsylvania truss adds to this design half-length struts or ties in the top, bottom, or both parts of the panels. It is named after the [[Pennsylvania Railroad]], which pioneered this design. It was once used for hundreds of bridges in the United States, but fell out of favor in the 1930s and very few examples of this design remain.<ref>[http://ohp.parks.ca.gov/pages/1067/files/healdburg%20bridge%20nr%20nomination.pdf National Register of Historic Places Registration Form] {{Webarchive|url=https://web.archive.org/web/20130115220840/http://www.ohp.parks.ca.gov/pages/1067/files/healdburg%20bridge%20nr%20nomination.pdf |date=2013-01-15 }} for [[Healdsburg Memorial Bridge]], California State Park System, accessed 2011-12-26.</ref> Examples of this truss type include the [[Lower Trenton Bridge]] in [[Trenton, New Jersey]], the [[Fort Wayne Street Bridge]] in [[Goshen, Indiana]], the [[Schell Bridge]] in [[Northfield, Massachusetts]], the [[Inclined Plane Bridge]] in [[Johnstown, Pennsylvania]], the [[Easton–Phillipsburg Toll Bridge]] in [[Easton, Pennsylvania]], the [[Connecticut River Bridge]] in [[Brattleboro, Vermont]], the [[Metropolis Bridge]] in [[Metropolis, Illinois]], and the [[Healdsburg Memorial Bridge]] in [[Healdsburg, California]].