{"nrhp_refnum":"88000805","name":"Bridge in Johnstown City","other_names":["See Also:Johnstown Inclined Railway"],"category":"structure","location":{"address":"LR 525 spur over Stoney Creek","address_restricted":false,"city":"Johnstown","county":"Cambria County","state":"PA","lat":40.326868181000066,"lon":-78.92716229499996,"geom_source":"nps_gis"},"listed_date":"1988-06-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A single-span, pin-connected Pennsylvania (Petit) truss bridge carrying vehicular traffic over Stoney Creek in Johnstown, Cambria County, Pennsylvania. It was built in 1890 and is part of the Johnstown Inclined Plane Railway.","why_significant":"The nomination argues the bridge is an intact example of a relatively long-span Pennsylvania (Petit) truss and is one of eight such bridges in the multiple-resource nomination. It is also said to have played an important role in local transportation as part of the Inclined Plane Railway, and was originally built as a lifesaver allowing residents of flood-prone Johnstown to reach higher ground. Its areas of significance are transportation and engineering.","narrative":"Built in 1890 over Stoney Creek in Johnstown, Cambria County, this single-span, pin-connected Pennsylvania (Petit) truss bridge is 224.5 feet long overall and rests on cut stone abutments and wings. Its superstructure is steel, and the bridge carries vehicular traffic. The Cambria Iron Works, a predecessor to Bethlehem Steel Company, is credited with its construction. The bridge is part of the Johnstown Inclined Plane Railway and was originally built as a lifesaver, giving residents of the flood-prone city a route to higher ground. It is considered an intact example of a relatively long-span Pennsylvania truss. The structure is one of eight Pennsylvania (Petit) truss bridges included in a multiple-resource nomination. Its significance lies in transportation and engineering. In 1965 wood flooring and wire mesh railing were added, which altered its original appearance.","period_of_significance":"1890","architect_builder":"Cambria Iron Works (builder), a predecessor to Bethlehem Steel Company","architectural_style":null,"criteria":[],"status_note":"Altered in 1965 with added wood flooring and wire mesh railing; in vehicular use.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.941241-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000805.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000805/0392c6396f-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000805/0392c6396f-1600.webp","licence":"CC BY 3.0","author":"Niagara","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Inclined_Plane_Bridge.jpg\" rel=\"noopener\">Niagara</a>, <a href=\"https://creativecommons.org/licenses/by/3.0\" rel=\"license noopener\">CC BY 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Inclined_Plane_Bridge.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992494","wikipedia":"https://en.wikipedia.org/wiki/Inclined_Plane_Bridge","wikidata":"https://www.wikidata.org/wiki/Q1660971"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/cambria-county/bridge-in-johnstown-city-88000805/"}