{"nrhp_refnum":"75001408","name":"Ballard Road Covered Bridge","other_names":[],"category":"structure","location":{"address":"NW of Jamestown on Ballard Rd. over Caesars Creek","address_restricted":false,"city":"Jamestown","county":"Greene County","state":"OH","lat":39.67825071300007,"lon":-83.81508746099996,"geom_source":"nps_gis"},"listed_date":"1975-05-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"A single-span wooden Howe truss covered bridge carrying Ballard Road over the North Branch of Caesar's Creek, about 5 miles west-northwest of Jamestown in New Jasper Township, Greene County, Ohio. The original form dated it to about 1850; later research dates it to 1883.","why_significant":"The bridge is a good example of the Howe truss, a design that used adjustable iron rods in place of wooden verticals. It is one of only 18 Howe truss covered spans remaining in Ohio. It is also praised as one of the state's prettiest covered bridge settings.","narrative":"Ballard Road Covered Bridge is a single-span wooden covered bridge crossing the North Branch of Caesar's Creek in New Jasper Township, Greene County, Ohio. It is 80 feet long and built on the Howe truss plan, patented in 1840, which replaced wooden verticals with iron rods that could be tightened with turnbuckles and nuts. The bridge has vertical siding, a metal roof, straight portals with roof overhang, and limestone abutments laid with mortar. The original nomination placed construction around 1850, when Lyman Ballard started a grist mill nearby and gave the road and bridge his name. Later county research credits H.E. Hebble with building it in 1883. It is listed for its engineering significance as one of only 18 Howe truss covered spans remaining in Ohio, and for its scenic setting, which one covered bridge author called one of Ohio's prettiest.","period_of_significance":"19th Century (about 1850)","architect_builder":"H.E. Hebble (builder, 1883, per later research); Howe truss design patented by William Howe","architectural_style":"Howe truss covered bridge","criteria":[],"status_note":"Listed in good condition, altered, on its original site; owned by Greene County and in use for transportation.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:10.201806-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/75001408.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/75001408/b6d9acd7b0-800.webp","url_1600":"https://nationalhistoricalregister.com/media/75001408/b6d9acd7b0-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Ballard_Road_Covered_Bridge,_western_side.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Ballard_Road_Covered_Bridge,_western_side.jpg"},"district":{"nrhp_refnum":"94001300","name":"Dean Family Farm Historic District (Boundary Increase)","url":"https://nationalhistoricalregister.com/districts/ohio/dean-family-farm-historic-district-boundary-increase-94001300/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71988756","wikipedia":"https://en.wikipedia.org/wiki/Ballard_Road_Covered_Bridge","wikidata":"https://www.wikidata.org/wiki/Q4851515"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/greene-county/ballard-road-covered-bridge-75001408/"}