{"nrhp_refnum":"88000774","name":"Bridge in West Wheatfield Township","other_names":[],"category":"structure","location":{"address":"LR 32008 over Richards Run","address_restricted":false,"city":"Robinson","county":"Indiana County","state":"PA","lat":40.403184371000066,"lon":-79.12891514199998,"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 stone arch bridge carrying a local road (LR 32008) over Richards Run in West Wheatfield Township, Indiana County, Pennsylvania. It has a 30-foot semicircular arch and is dated 1911 by a carved datestone.","why_significant":"The nomination argues the bridge is a distinctive early twentieth-century example of the camelback form, which it adapts by using rough, rock-faced ashlar rather than the rubble masonry of earlier camelback bridges. The narrow wall above the arch crown and contrasting concrete coping accentuate the camelback profile. It is also described as one of only five nominated stone arch bridges in western Pennsylvania.","narrative":"Spanning Richards Run in rural, wooded West Wheatfield Township, Indiana County, this single-span stone arch bridge was completed in 1911, as recorded by a carved datestone set in the parapet above the keystone. Its semicircular arch measures 30 feet across and carries a local road, and the bridge is built of coursed, rock-faced ashlar with formed concrete parapets and coping. The design follows the camelback form of nineteenth-century Pennsylvania highway bridges, with a narrow wall above the arch crown and pale coping stones that emphasise the profile. Many camelback bridges built in the twentieth century copied their predecessors closely, but this one combines the older shape with a different masonry technique. It is regarded as an engineering example of that blend and is one of only five nominated stone arch bridges in western Pennsylvania.","period_of_significance":"1911","architect_builder":null,"architectural_style":"Camelback","criteria":["C"],"status_note":null,"vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.381235-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/88000774.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000774/a1b881a84e-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000774/a1b881a84e-1600.webp","licence":"Public domain","author":"PennDOT","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Bridge_in_West_Wheatfield_Township.jpg\" rel=\"noopener\">PennDOT</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Bridge_in_West_Wheatfield_Township.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993079","wikipedia":"https://en.wikipedia.org/wiki/Bridge_in_West_Wheatfield_Township","wikidata":"https://www.wikidata.org/wiki/Q4966389"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/indiana-county/bridge-in-west-wheatfield-township-88000774/"}