{"nrhp_refnum":"88000862","name":"Bridge in French Creek Township","other_names":[],"category":"structure","location":{"address":"LR 43074 over French Creek","address_restricted":false,"city":"Carlton","county":"Mercer County","state":"PA","lat":41.47153293200006,"lon":-80.01836982499998,"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 multiple-span steel Pratt through truss highway bridge over French Creek in French Creek Township, Mercer County, Pennsylvania, carrying vehicular traffic. The bridge has two pin-connected spans with a total length of about 276.5 feet.","why_significant":"The nomination describes the bridge as an intact example of a multiple-span Pratt through truss, with decorative portals and typical members. It is presented as a very well preserved representative of a bridge type used frequently in northwestern Pennsylvania, here in a multiple-span configuration. The area of significance is engineering.","narrative":"Two pin-connected steel spans carry vehicular traffic across French Creek in French Creek Township, Mercer County, Pennsylvania. Decorative bridge plates record that the crossing was built in 1898 by the Columbia Bridge Works, a bridge company based in Ohio. The structure is a multiple-span Pratt through truss, a type with typical members and decorative portals. Its overall length is about 276.5 feet, and its stone piers and abutments support the steel superstructure. The bridge is regarded as an intact and very well preserved example of this truss type, which was commonly built in northwestern Pennsylvania. Its significance rests on its engineering value as a representative of that construction method in a multiple-span arrangement. A replacement deck was installed in 1981, but the superstructure retains its original character.","period_of_significance":"1898","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Deck replaced in 1981; the bridge remains in vehicular use.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.491511-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000862.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000862/4c5bdba1fe-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000862/4c5bdba1fe-1600.webp","licence":"Public domain","author":"PennDOT","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bridge_in_French_Creek_Township.jpg\" rel=\"noopener\">PennDOT</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bridge_in_French_Creek_Township.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993370","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_French_Creek_Township","wikidata":"https://www.wikidata.org/wiki/Q4966356"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/mercer-county/bridge-in-french-creek-township-88000862/"}