{"nrhp_refnum":"88000853","name":"Bridge in Jenner Township","other_names":[],"category":"structure","location":{"address":"LR 55125 over Roaring Run","address_restricted":false,"city":"Pilltown","county":"Somerset County","state":"PA","lat":40.17163319600007,"lon":-79.01339172099995,"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 single-span stone arch highway bridge over Roaring Run in Jenner Township, near Pilltown, Somerset County, Pennsylvania, dated 1908 in district bridge files.","why_significant":"The bridge is described as a well-preserved example of a small late nineteenth or early twentieth century Pennsylvania stone highway bridge, with span length and rock-faced ashlar construction typical of that period. It is significant under engineering because it is one of only five stone arch bridges nominated in western Pennsylvania.","narrative":"Stone arch highway bridge carrying a road over Roaring Run in Jenner Township, near Pilltown in Somerset County, Pennsylvania. Built in 1908 according to district bridge files, the structure has a single span of 31.5 feet and is constructed of rock-faced coursed ashlar with stone abutments, wings and voussoirs. Its nominated boundary is a 52 by 25 foot rectangle enclosing the superstructure and substructure. The bridge is regarded as a well-preserved example of a small late nineteenth or early twentieth century Pennsylvania stone highway bridge, with span length and masonry typical of that period. Its engineering significance lies partly in its rarity: it is one of only five stone arch bridges among those nominated in western Pennsylvania. One parapet is missing, and the bridge is recorded as altered. Good stonework is noted among its unusual features, and the setting is rural.","period_of_significance":null,"architect_builder":null,"architectural_style":"Stone arch","criteria":[],"status_note":"One parapet is missing; the form marks the bridge as altered.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:35.666417-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000853.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000853/a35138c042-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000853/a35138c042-1600.webp","licence":"Public domain","author":"PennDOT","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bridge_in_Jenner_Township.jpg\" rel=\"noopener\">PennDOT</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bridge_in_Jenner_Township.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993849","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_Jenner_Township","wikidata":"https://www.wikidata.org/wiki/Q4966362"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/somerset-county/bridge-in-jenner-township-88000853/"}