{"nrhp_refnum":"88000816","name":"Pond Mill Bridge","other_names":["Pondtown Mill Bridge"],"category":"structure","location":{"address":"LR 01009 over Bermudian Creek","address_restricted":false,"city":"Bermudian","county":"Adams County","state":"PA","lat":39.99606707300006,"lon":-77.05838266699999,"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 three-span camelback stone arch bridge carrying vehicular traffic over Bermudian Creek in Latimore Township, Adams County, Pennsylvania. The date of construction is unknown.","why_significant":"The bridge is described as typical of the multi-span camelback arch bridges built in Pennsylvania in the nineteenth century. It is one of five multi-span stone arch bridges nominated from south-central Pennsylvania and the only multi-span camelback arch bridge in Adams County. It retains a high degree of integrity of design and materials despite spandrel reinforcement and concrete parapet repairs.","narrative":"Pond Mill Bridge is a three-span stone arch bridge carrying vehicular traffic over Bermudian Creek in Latimore Township, Adams County, Pennsylvania. Its arches are built of coursed rubble stone with squared stone voussoirs, and the structure measures about 91 feet overall, with a 22-foot main span flanked by two 18-foot secondary spans. Its central arch is larger than the side arches, a feature the record notes as unusual. The bridge is a camelback type, a form with a raised central arch that was common in Pennsylvania in the nineteenth century. Its construction date is unknown, although state staff have given an approximate range of 1825 to 1850. It is significant for engineering and is the only multi-span camelback arch bridge in Adams County. Reinforcement of the spandrels and late twentieth-century concrete repairs to the parapets have altered some fabric, yet the bridge keeps a high degree of its original design and materials. The nominated area covers the bridge superstructure and substructure only.","period_of_significance":null,"architect_builder":null,"architectural_style":"Camelback arch","criteria":[],"status_note":"Vehicular use is noted as present and original; repairs include spandrel reinforcing and concrete parapet repair.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.377491-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000816.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000816/18b285748c-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000816/18b285748c-1600.webp","licence":"Public domain","author":"PennDOT","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Pond_Mill_Bridge.jpg\" rel=\"noopener\">PennDOT</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Pond_Mill_Bridge.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992098","wikipedia":"https://en.wikipedia.org/wiki/Pond_Mill_Bridge","wikidata":"https://www.wikidata.org/wiki/Q7227666"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/adams-county/pond-mill-bridge-88000816/"}