{"nrhp_refnum":"12000220","name":"Phoenixville Historic District (Boundary Decrease)","other_names":[],"category":"district","location":{"address":"High, Dayton, Railroad, Vanderslice, Bridge, & N. Main Sts., Wheatland & French Cr.","address_restricted":false,"city":"Phoenixville","county":"Chester County","state":"PA","lat":40.13496878700005,"lon":-75.5180133889643,"geom_source":"nps_gis"},"listed_date":"2012-04-18","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":[],"significance_levels":["local"],"summary":{"what_it_is":"A boundary decrease to the Phoenixville Historic District in Phoenixville, Chester County, Pennsylvania, covering about 110.5 acres roughly bounded by High Street, Vanderslice Street, Bridge Street and the French Creek floodplain. It contains the former Phoenix Iron Works site, the North Hill Neighborhood, and buildings along the 300-500 block of Bridge Street.","why_significant":"The nomination argues that the Phoenix Iron Works was the largest iron and steel producer in Chester County and one of the largest in southeast Pennsylvania. Its demolition has separated the surrounding district and reduced the district's ability to convey its historic significance. The boundary decrease removes the cleared industrial area and retains the remaining related resources.","narrative":"Phoenixville's Phoenix Iron Works, on the banks of French Creek in Chester County, Pennsylvania, was the largest iron and steel producer in the county and one of the largest in southeastern Pennsylvania. By 1881 it used 60,000 tons of ore annually and employed 1,500 men. The works closed in 1987, and most of its buildings were cleared during redevelopment in the 1990s. This boundary decrease removes the cleared industrial land from the original district and keeps the surrounding resources. These include the North Hill Neighborhood of residences and commercial buildings, the Company Offices, the Phoenix Iron Works Foundry, and a group of transportation and industrial buildings on Bridge Street. The original district was valued for its nineteenth-century industrial history and its collection of local architecture. The loss of the iron works has weakened the district's ability to convey that history, which is why the boundary was revised.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":["A","C"],"status_note":"Most Phoenix Iron Works buildings were demolished in the 1990s; the Company Offices and Foundry remain, and the Gay Street Bridge was replaced in 2009.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:10:27.293542-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/12000220.pdf"},"photo":null,"district":{"nrhp_refnum":"87000378","name":"Phoenixville Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/phoenixville-historic-district-87000378/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71997574","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/phoenixville-historic-district-boundary-decrease-12000220/"}