{"nrhp_refnum":"76001357","name":"Harshaville Covered Bridge","other_names":[],"category":"structure","location":{"address":"SR 1","address_restricted":false,"city":"Harshaville","county":"Adams County","state":"OH","lat":38.90790986500008,"lon":-83.54442406599998,"geom_source":"nps_gis"},"listed_date":"1976-03-16","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A one-span wooden Burr truss covered bridge crossing Cherry Fork at Harshaville, Oliver Township, Adams County, Ohio, on county road #1. Its builder and exact construction date are unknown, but it predates the Civil War.","why_significant":"The nomination calls it an outstanding example of the Burr truss plan patented by Theodore Burr. It was reportedly built before the Civil War and used by General John Morgan's Raiders in 1863. It also carries the name of the Harsha family, prominent local mill owners.","narrative":"Spanning Cherry Fork at Harshaville in Oliver Township, this single-span wooden covered bridge carries county road #1 in Adams County, Ohio. It uses the Burr truss plan, patented by Theodore Burr, with ten-ply laminated arches set on both sides of double multiple kingpost trusses. The floor is 88 feet long, the overall length is 116 feet, and the roadway is 17 feet wide. Sheet metal siding and roof cover the frame, and the stone abutments have been reinforced with concrete. Two sets of concrete piers were added after a 1933 photograph showed none. The bridge is thought to predate the Civil War and reportedly served General John Morgan's Raiders in 1863, though no record names the builder or the exact date. It takes its name from the Harsha family, who ran the local mills from 1846 and gave their name to the community. It is valued as an outstanding example of Burr truss construction.","period_of_significance":"1804-60 (pre-Civil War)","architect_builder":null,"architectural_style":"Burr truss covered bridge","criteria":[],"status_note":"Overall condition is described as good; owned by Adams County. The sheet metal siding and roof are in place, and concrete piers and abutment reinforcement were added later.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:09.90084-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/76001357.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/76001357/01dc5dd5ff-800.webp","url_1600":"https://nationalhistoricalregister.com/media/76001357/01dc5dd5ff-1600.webp","licence":"CC BY-SA 3.0","author":"Aesopposea","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:HarshavilleOH3.JPG\" rel=\"noopener\">Aesopposea</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:HarshavilleOH3.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71986576","wikipedia":"https://en.wikipedia.org/wiki/Harshaville_Covered_Bridge","wikidata":"https://www.wikidata.org/wiki/Q5673866"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/adams-county/harshaville-covered-bridge-76001357/"}