{"nrhp_refnum":"88000880","name":"Marshall's Bridge","other_names":[],"category":"structure","location":{"address":"Marshall Rd. over Culbertson Run","address_restricted":false,"city":"Little Washington","county":"Chester County","state":"PA","lat":40.056570356000066,"lon":-75.75823092399997,"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":"Marshall's Bridge is a stone highway bridge crossing Culbertson Run on Marshall Road in East Brandywine Township, Chester County, Pennsylvania, near Little Washington. It was built in 1903 by the local contractor P. J. McCormick & Sons.","why_significant":"The nomination describes the bridge as unusual for its period: its overall configuration resembles nineteenth-century stone highway bridges, but it is distinguished by brick arch rings. The form notes it is one of the few bridges in the nominated group that uses brick arch rings. The area of significance given is engineering.","narrative":"Marshall's Bridge carries Marshall Road over Culbertson Run in East Brandywine Township, Chester County, Pennsylvania. The local contracting firm P. J. McCormick & Sons built it in 1903. Its coursed rubble stone walls and arch follow the general plan of nineteenth-century stone highway bridges, but the builders used brick for the arch rings, a feature the form notes is shared by only a few bridges in the group nominated with it. The single main span is 20 feet long, flanked by two spans of 39 feet, and the superstructure and substructure are both of masonry. The bridge is recorded as unaltered, with a brick intrados and an extended pier on its upstream side. The surrounding area is semi-rural, with an old farmstead adjacent to the northwest. Its significance rests on its engineering: the brick arch rings and masonry construction make it a distinctive example of early twentieth-century stone bridge building in Pennsylvania.","period_of_significance":null,"architect_builder":"P. J. McCormick & Sons (builder/contractor)","architectural_style":null,"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 17:11:36.446772-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000880.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000880/f2cf18ad17-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000880/f2cf18ad17-1600.webp","licence":"CC0","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Marshal_Bridge_Chesco.JPG\" rel=\"noopener\">Smallbones</a>, <a href=\"http://creativecommons.org/publicdomain/zero/1.0/deed.en\" rel=\"license noopener\">CC0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Marshal_Bridge_Chesco.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992678","wikipedia":"https://en.wikipedia.org/wiki/Marshall%27s_Bridge","wikidata":"https://www.wikidata.org/wiki/Q6773443"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/marshalls-bridge-88000880/"}