{"nrhp_refnum":"76001424","name":"Rock Mill Covered Bridge","other_names":[],"category":"structure","location":{"address":"SR 41","address_restricted":false,"city":"Rock Mill","county":"Fairfield County","state":"OH","lat":39.74894201500007,"lon":-82.71331971399997,"geom_source":"nps_gis"},"listed_date":"1976-04-26","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["state"],"summary":{"what_it_is":"A one-span wooden Queenpost truss covered bridge crossing the Hocking River gorge on County Road 41 at Rock Mill, Bloom Township, Fairfield County, Ohio. The original form dates it to 1849; a 1986 update says the present bridge was built in 1901 by Jacob R. Brandt.","why_significant":"The bridge and the neighboring Rock Mill are one of only two surviving mill and covered bridge combinations in Ohio. It is described as the oldest and shortest of Fairfield County's covered bridges and one of the state's most photographed. It was featured on a 1965 tourism poster.","narrative":"Spanning a sandstone gorge about 50 feet deep on the Hocking River, this small covered bridge carries County Road 41 at Rock Mill in Fairfield County, Ohio. It is a single-span Queenpost truss, roughly 36 feet long and 15 feet wide, with low vertical-board siding, roofed windows along both sides, projecting portals, a shingle roof and cut stone abutments. Painted white, it has changed little in appearance, though the county added steel I-beams and concrete pillars. The original nomination dates it to 1849, while later research says Jacob R. Brandt built the present bridge in 1901 for $575, replacing an earlier covered structure. It takes its name from the nearby Rock Mill, built in 1824, and the two form one of only two mill and covered bridge pairings left in Ohio. It is the oldest and shortest covered bridge in the county and a frequently photographed landmark, featured on a 1965 tourism poster.","period_of_significance":"19th Century (specific date 1849)","architect_builder":"Jacob R. Brandt (builder of the 1901 bridge, per 1986 update)","architectural_style":"Queenpost truss covered bridge","criteria":[],"status_note":"Condition listed as good and altered, on its original site. The county renovated it, and it now rests on steel I-beams with concrete-reinforced cut stone abutments. Owned by Fairfield County and open to the public.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:09.925515-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/76001424.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/76001424/703e2a1f01-800.webp","url_1600":"https://nationalhistoricalregister.com/media/76001424/703e2a1f01-1600.webp","licence":"CC BY-SA 3.0","author":"Wdzinc","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Rock_Mill_Covered_Bridge.JPG\" rel=\"noopener\">Wdzinc</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:Rock_Mill_Covered_Bridge.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71988239","wikipedia":"https://en.wikipedia.org/wiki/Rock_Mill_Covered_Bridge","wikidata":"https://www.wikidata.org/wiki/Q58904073"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/fairfield-county/rock-mill-covered-bridge-76001424/"}