{"nrhp_refnum":"80003411","name":"Knisley, Dr., Covered Bridge","other_names":[],"category":"structure","location":{"address":"SE of Alum Bank on LR 05098, West St. Clair Township","address_restricted":false,"city":"Alum Bank","county":"Bedford County","state":"PA","lat":40.16023631000007,"lon":-78.60184667399994,"geom_source":"nps_gis"},"listed_date":"1980-04-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A covered bridge over Dunnings Creek near Alum Bank in Bedford County, Pennsylvania, located about 2.5 miles northeast of Ryot in West St. Clair Township, off a local road near its junction with PA 96. It is a Burr truss structure with an 80-foot end post length, a width of 12 feet 7 inches and a clearance of 11 feet 7 inches.","why_significant":"The nomination argues the bridge is eligible as an example of a type of transportation architecture, embodying wood bridge technology of the 19th century. Covered bridges of this kind were once common in Bedford County, and the bridge is one of the surviving examples in a group of county covered bridges. Its low side walls leave the trussing system clearly visible, a feature the nomination notes is common in the county's bridges.","narrative":"A Burr truss covered bridge crossing Dunnings Creek near Alum Bank in Bedford County, Pennsylvania, about 2.5 miles northeast of Ryot in West St. Clair Township. The bridge has an 80-foot end post length, a roadway 12 feet 7 inches wide and a clearance of 11 feet 7 inches. It carries a private access road and sees little traffic, with vegetation growing over the approach. Its low side walls leave the trussing system open to view, a feature found in many of the county's bridges. The bridge is regarded as an example of 19th-century wood bridge technology, a form once common in Bedford County. Of the county's covered bridges surveyed as a group, fourteen survive, with one more lost to alteration. The bridge is recorded in good condition and was considered for its engineering method and its role in the county's transportation history.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Condition recorded as good; the bridge serves private property and is lightly used.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:34.508906-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/80003411.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80003411/288e126dc2-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80003411/288e126dc2-1600.webp","licence":"CC BY 2.0","author":"Frank Kovalchek","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Dr_Knisley_Covered_Bridge_1.jpg\" rel=\"noopener\">Frank Kovalchek</a>, <a href=\"https://creativecommons.org/licenses/by/2.0\" rel=\"license noopener\">CC BY 2.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Dr_Knisley_Covered_Bridge_1.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992278","wikipedia":"https://en.wikipedia.org/wiki/Dr._Knisley_Covered_Bridge","wikidata":"https://www.wikidata.org/wiki/Q5304239"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/bedford-county/knisley-dr-covered-bridge-80003411/"}