{"nrhp_refnum":"88000795","name":"Bridge between East Manchester and Newberry Townships","other_names":[],"category":"structure","location":{"address":"LR 250 over Conewago Creek","address_restricted":false,"city":"Conewago Heights","county":"York County","state":"PA","lat":40.08144899200005,"lon":-76.71720369799993,"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 single-span, pin-connected Pennsylvania (Petit) pin-connected truss bridge carrying L.R. 250 (Route 181) over Conewago Creek between East Manchester and Newberry Townships in York County, Pennsylvania. The form gives its date as 1889.","why_significant":"The nomination describes the bridge as a typical example of the Pennsylvania (Petit) truss type and as one of eight representative examples of that type included in the multiple-resource nomination. It is regarded as unusual for its location, being one of only four metal truss bridges in southeastern Pennsylvania. The form gives Engineering as the area of significance.","narrative":"A single-span, pin-connected Pennsylvania (Petit) truss bridge built in 1889 carries Route 181 across Conewago Creek between East Manchester and Newberry Townships in York County. The Wrought Iron Bridge Company of Canton, Ohio, which the form describes as an important nineteenth-century bridge company, supplied the structure. It measures 299 feet overall, with a main span of 295 feet, and its superstructure is steel, with a sloped Pennsylvania web and pin connections. The bridge has a deck-type appearance with round handrail and guardrail. Its significance lies in its engineering: it is a typical example of the Pennsylvania truss form and one of eight representative examples included in the multiple-resource group. Its location is unusual, as it is one of only four metal truss bridges in southeastern Pennsylvania, while most others in the group stand in the north central, northwestern and southwestern parts of the state.","period_of_significance":"1889","architect_builder":null,"architectural_style":"Pennsylvania (Petit) 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 17:11:37.38818-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000795.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000795/fb664de39e-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000795/fb664de39e-1600.webp","licence":"Public domain","author":"PennDOT","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bridge_between_East_Manchester_and_Newberry_Townships_2.jpg\" rel=\"noopener\">PennDOT</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bridge_between_East_Manchester_and_Newberry_Townships_2.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71994089","wikipedia":"https://en.wikipedia.org/wiki/Bridge_between_East_Manchester_and_Newberry_Townships","wikidata":"https://www.wikidata.org/wiki/Q4966329"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/york-county/bridge-between-east-manchester-and-newberry-townships-88000795/"}