{"nrhp_refnum":"80003434","name":"Erwinna Covered Bridge","other_names":[],"category":"structure","location":{"address":"N of Erwinna on LR 09098, Tinicum Township","address_restricted":false,"city":"Erwinna","county":"Bucks County","state":"PA","lat":40.50256766800004,"lon":-75.07443897699994,"geom_source":"nps_gis"},"listed_date":"1980-12-01","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A covered bridge over Lodi Creek in Tinicum Township near Erwinna, Bucks County, Pennsylvania, built in 1871. It is a Town truss bridge, 56 feet long and 15 feet wide, owned by the Commonwealth of Pennsylvania.","why_significant":"The nomination describes it as the shortest of the remaining covered bridges in the county and says it is built in the typical Bucks County style, with rough horizontal siding and triangular portal openings. It is listed as one of the 19th-century wooden bridges that are eligible as examples of wooden bridge technology, as part of the Covered Bridges & the Delaware River Watershed thematic resources.","narrative":"Erwinna Covered Bridge is a wooden Town truss bridge carrying a road across Lodi Creek in Tinicum Township, Bucks County, Pennsylvania. It was built in 1871 and measures 56 feet in length and 15 feet in width, with a clearance of 11 feet. The bridge is finished with rough horizontal siding and triangular portal openings, which mark it as an example of the typical covered bridge form of Bucks County. Among the county's surviving covered bridges it is the shortest. It is part of a group of 19th-century wooden bridges in the Delaware River watershed that illustrate the construction methods of wooden bridge technology. The Commonwealth of Pennsylvania holds ownership of the structure, and its recorded condition is good.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Condition recorded as good.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:33.63334-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/80003434.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80003434/c620e52b58-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80003434/c620e52b58-1600.webp","licence":"CC BY-SA 3.0","author":"CrimsonDragonPhotographicArts","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Erwinna_Covered_Bridge.jpg\" rel=\"noopener\">CrimsonDragonPhotographicArts</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Erwinna_Covered_Bridge.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992464","wikipedia":"https://en.wikipedia.org/wiki/Erwinna_Covered_Bridge","wikidata":"https://www.wikidata.org/wiki/Q5396226"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/bucks-county/erwinna-covered-bridge-80003434/"}