{"nrhp_refnum":"80003522","name":"White Rock Forge Covered Bridge","other_names":[],"category":"structure","location":{"address":"S of Kirkwood on T 337, Little Britain/Colerain Townships","address_restricted":false,"city":"Kirkwood","county":"Lancaster County","state":"PA","lat":39.824717692000036,"lon":-76.08987009699996,"geom_source":"nps_gis"},"listed_date":"1980-12-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A covered bridge of Burr truss type spanning West Branch Octoraro Creek on T337 between Little Britain and Colerain Townships, Lancaster County, Pennsylvania. The form gives its year as 1847 and its end post length as 87 feet, with a width of 15 feet.","why_significant":"The nomination treats the bridge as one of the Covered Bridges of Lancaster County thematic group. It cites vertical plank siding, a gable roof, triangular portals and two rectangular side windows as distinguishing features. The form records its condition as excellent.","narrative":"Spanning the West Branch Octoraro Creek on road T337 between Little Britain and Colerain Townships in Lancaster County, Pennsylvania, the White Rock Forge Covered Bridge is a Burr truss structure built in 1847. It measures 87 feet along its end post length and 15 feet in width. Its exterior is finished with vertical plank siding beneath a gable roof, and its portals are triangular, with two rectangular side windows set into the walls. The bridge belongs to a group of covered bridges in Lancaster County that were considered together in a multiple property submission. Its significance lies in its survival as a representative example of frame covered bridge construction from the nineteenth century. The form records the bridge in excellent condition, with its trusses described as sound. Reviewers noted that the abutments needed closer examination and that the boundary had been adjusted to take them in, which allowed the bridge to be accepted for listing.","period_of_significance":null,"architect_builder":null,"architectural_style":"Burr truss covered bridge","criteria":[],"status_note":"Condition recorded as excellent","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:33.193022-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/80003522.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80003522/2f3ce11c25-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80003522/2f3ce11c25-1600.webp","licence":"CC BY-SA 2.5","author":"Photo by and (c)2006 Derek Ramsey (Ram-Man)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:White_Rock_Forge_Covered_Bridge_Side_View_3000px.jpg\" rel=\"noopener\">Photo by and (c)2006 Derek Ramsey (Ram-Man)</a>, <a href=\"https://creativecommons.org/licenses/by-sa/2.5\" rel=\"license noopener\">CC BY-SA 2.5</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:White_Rock_Forge_Covered_Bridge_Side_View_3000px.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993225","wikipedia":"https://en.wikipedia.org/wiki/White_Rock_Forge_Covered_Bridge","wikidata":"https://www.wikidata.org/wiki/Q7995334"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/lancaster-county/white-rock-forge-covered-bridge-80003522/"}