{"nrhp_refnum":"88000814","name":"Bridge in Tinicum Township","other_names":["See Also:Delaware Division of the Pennsylvania Canal"],"category":"structure","location":{"address":"LR 920 over Pennsylvania Canal","address_restricted":false,"city":"Point Pleasant","county":"Bucks County","state":"PA","lat":40.42347392800008,"lon":-75.06492030999993,"geom_source":"nps_gis"},"listed_date":"1988-06-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["state"],"summary":{"what_it_is":"A pin-connected Pratt pony truss bridge carrying vehicular traffic over the Pennsylvania Canal in a rural small village in Tinicum Township, Bucks County. The bridge has a single main span of 82 feet.","why_significant":"The nomination describes the bridge as a representative example of a pin-connected Pratt pony truss. A bridge plate on the top chord records its construction in 1877 by Murray, Dougal & Company. It is one of seven Pratt pony trusses built between 1871 and 1906 included in the nomination, and one of only four nominated bridges in southeastern Pennsylvania, an unusual location for metal truss bridges. The area of significance is engineering.","narrative":"Built in 1877 by Murray, Dougal & Company, this single-span steel bridge carries vehicular traffic over the Pennsylvania Canal in a rural village in Tinicum Township, Bucks County. Its main span measures 82 feet, and its pin-connected Pratt pony truss has a full-slope design with welded bracing on every other span. Simple finials decorate the endposts, and a bridge plate on the top chord documents the date and builder. The bridge is a representative example of its type from the late nineteenth century. It is one of seven Pratt pony trusses built between 1871 and 1906 that were grouped together in a statewide nomination of state-owned highway bridges. Its location in southeastern Pennsylvania is unusual, since most metal truss bridges in the state stand in the north central, northwestern and northeastern parts. The nominated property is a rectangle of 132 by 44 feet, covering only the superstructure and substructure, and it occupies less than one acre.","period_of_significance":"1877","architect_builder":"Murray, Dougal & Co. (builder/contractor)","architectural_style":null,"criteria":[],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.036335-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000814.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000814/ad1ed1edf6-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000814/ad1ed1edf6-1600.webp","licence":"CC BY-SA 4.0","author":"Zeete","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Byram_Road_Bridge,_Point_Pleasant,_PA_-_2025.jpg\" rel=\"noopener\">Zeete</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Byram_Road_Bridge,_Point_Pleasant,_PA_-_2025.jpg"},"district":{"nrhp_refnum":"89001652","name":"Point Pleasant Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/point-pleasant-historic-district-89001652/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992460","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_Tinicum_Township","wikidata":"https://www.wikidata.org/wiki/Q4966378"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/bucks-county/bridge-in-tinicum-township-88000814/"}