{"nrhp_refnum":"78002375","name":"Hare's Hill Road Bridge","other_names":[],"category":"structure","location":{"address":"W of Phoenixville on Hare's Hill Rd., East Pikeland Township","address_restricted":false,"city":"Phoenixville","county":"Chester County","state":"PA","lat":40.140999409000074,"lon":-75.56791995099996,"geom_source":"nps_gis"},"listed_date":"1978-03-28","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"A wrought iron bow string truss bridge with lattice infilling, carrying Hare's Hill Road over French Creek east of Kimberton in East Pikeland Township, Chester County, Pennsylvania. It has a single 100-foot span, 15 feet of underclearance and a 15-foot roadway.","why_significant":"The nomination describes the bridge as apparently unique, with no other bridge of this design identified. Its riveted construction and the 1867 date on a plaque in the abutments are cited as points of interest. The bridge is also linked to the nearby John Prizer mill properties and possibly to the Phoenix Iron Works, which the form notes were innovators of iron bridges.","narrative":"A wrought iron bow string truss bridge with lattice infilling carries Hare's Hill Road across French Creek east of Kimberton in East Pikeland Township, Chester County, Pennsylvania. The single span measures 100 feet, with 15 feet of underclearance and a 15-foot roadway. Two angle irons riveted into a T-section form the bow string truss, and the diagonal tension members running from the bow to the deck are regarded as original. The deck is now an open steel mesh grid, probably replacing an earlier wooden deck, and the abutments are built of local stone. A plaque in the abutments bears the date 1867, which may refer to an earlier bridge. The bridge stands beside the former mill properties of John Prizer, who began milling on the creek in 1835 and built new mill buildings in 1867. Its riveted construction is unusual for the bow string type, and it is regarded as apparently unique, with no other bridge of this design identified. A link to the Phoenix Iron Works, known for iron bridge innovation, is considered possible but is not confirmed.","period_of_significance":null,"architect_builder":null,"architectural_style":"Bow string truss","criteria":[],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:30.382362-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/78002375.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78002375/fb01bf6b69-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78002375/fb01bf6b69-1600.webp","licence":"Public domain","author":"Saguinter at en.wikipedia","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Hareshill.jpg\" rel=\"noopener\">Saguinter at en.wikipedia</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Hareshill.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71997602","wikipedia":"https://en.wikipedia.org/wiki/Hares_Hill_Road_Bridge","wikidata":"https://www.wikidata.org/wiki/Q5656904"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/hares-hill-road-bridge-78002375/"}