{"nrhp_refnum":"90000402","name":"Corbin Bridge","other_names":["Huntingdon County Bridge #20"],"category":"structure","location":{"address":"Twnshp. Rd. 428 over the Raystown Branch, 0.5 W of confluence with the Juniata River","address_restricted":false,"city":"Huntingdon","county":"Huntingdon County","state":"PA","lat":40.454675483000074,"lon":-77.98300277499999,"geom_source":"nps_gis"},"listed_date":"1990-03-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"A one-lane, single-span suspension bridge over the Raystown Branch of the Juniata River, about half a mile west of its junction with the Juniata, near Huntingdon, Pennsylvania. Built in 1937 as Huntingdon County Bridge No. 20.","why_significant":"The bridge is argued to be significant for its engineering. Its suspension design is highly unusual for the region, being the only suspension road bridge in the PennDOT district covering Huntingdon and five neighboring counties. It is also the only road suspension bridge in Huntingdon County, and it is regarded as a good representative of an early twentieth-century suspension bridge in the county because of its integrity.","narrative":"Corbin Bridge crosses the Raystown Branch of the Juniata River about half a mile west of its junction with the Juniata, near Huntingdon, Pennsylvania. It is a 322-foot single-span suspension bridge with a 12.5-foot deck of wood topped with macadam. Two-and-three-eighths-inch wire rope cables, made by Roebling & Son of Trenton, New Jersey, hang from 39-foot steel towers and are anchored in concrete deadmen, and a double intersecting Warren truss stiffens the deck. Built in 1937 to replace a bridge swept away in the 1936 St. Patrick's Day flood, it was fabricated by Reading Steel Products, Inc. Its suspension design is unusual for the area: it is the only suspension road bridge in the PennDOT district covering Huntingdon and five neighboring counties, and the only road suspension bridge in Huntingdon County. It is significant chiefly for engineering, and its integrity makes it a fine example of early twentieth-century suspension construction in the county.","period_of_significance":"1937","architect_builder":"Reading Steel Products, Inc.","architectural_style":"Other: Suspension Bridge","criteria":["C"],"status_note":"Truss damaged by an overload in 1980 was repaired in 1981, and the seven-ton weight limit was restored.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.336394-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/90000402.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/90000402/e482ecba4e-800.webp","url_1600":"https://nationalhistoricalregister.com/media/90000402/e482ecba4e-1600.webp","licence":"Public domain","author":"Jet Lowe","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Corbin_Bridge.jpg\" rel=\"noopener\">Jet Lowe</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Corbin_Bridge.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993029","wikipedia":"https://en.wikipedia.org/wiki/Corbin_Bridge","wikidata":"https://www.wikidata.org/wiki/Q5169760"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/huntingdon-county/corbin-bridge-90000402/"}