{"nrhp_refnum":"88000803","name":"Frankford Avenue Bridge","other_names":[],"category":"structure","location":{"address":"Frankford Ave. over Pennypack Creek","address_restricted":false,"city":"Philadelphia","county":"Philadelphia","state":"PA","lat":40.06473605100007,"lon":-74.98085217199997,"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 reinforced concrete filled barrel arch bridge carrying Frankford Avenue over Poquessing Creek on the Philadelphia/Bucks County line, with a single main span of 74 feet. It was built in 1904 by the City of Philadelphia.","why_significant":"The nomination argues the bridge is an early and excellent example of a highly ornamented, well preserved filled barrel arch bridge. Its concrete spandrel walls are scored to imitate stone courses and the arch ring is articulated to simulate voussoirs, a treatment described as typical of bridges built in parks or cities. The original urn-shaped baluster railing and the careful craftsmanship of the concrete arch are also cited.","narrative":"Built in 1904 by the City of Philadelphia, this reinforced concrete arch bridge carries Frankford Avenue over Poquessing Creek on the Philadelphia and Bucks County line. Its single main span measures 74 feet. John McMenamy was the contractor. The steel reinforcement of the segmental arch combined beam and bar reinforcement, with a steel rib built of four angles joined by quarter-inch reinforcing bars. The bridge is regarded as an excellent example of a highly ornamented filled barrel arch. Its spandrel walls are scored to imitate stone courses, and the arch ring is articulated to simulate voussoirs, a surface treatment typical of concrete arch bridges built in parks or cities. The parapet is original and has urn-shaped balusters. The bridge is significant for its engineering and for the craftsmanship of its early concrete construction, and it was entered in the National Register in 1988 as part of a group of Pennsylvania highway bridges.","period_of_significance":"1904","architect_builder":"John McMenamy (contractor)","architectural_style":"Filled barrel arch","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 17:11:35.820582-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000803.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000803/4d4496c84a-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000803/4d4496c84a-1600.webp","licence":"Public domain","author":"The original uploader was Coemgenus at English Wikipedia.","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Frankford-Avenue-Bridge.jpg\" rel=\"noopener\">The original uploader was Coemgenus at English Wikipedia.</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Frankford-Avenue-Bridge.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993793","wikipedia":"https://en.wikipedia.org/wiki/Frankford_Avenue_Bridge","wikidata":"https://www.wikidata.org/wiki/Q5490737"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/philadelphia/frankford-avenue-bridge-88000803/"}