{"nrhp_refnum":"10000082","name":"Blaine Hill \"S\" Bridge","other_names":["Blaine Bridge","Blaine Hill Bridge"],"category":"structure","location":{"address":"Township Rd. 649","address_restricted":false,"city":"Blane, Pease Township","county":"Belmont County","state":"OH","lat":40.06692065300007,"lon":-80.82083148699996,"geom_source":"nps_gis"},"listed_date":"2010-03-17","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Transportation","Exploration/Settlement","Engineering"],"significance_levels":["state"],"summary":{"what_it_is":"A three-span sandstone arch bridge, 356 feet long, carrying the National Road over Wheeling Creek at Blaine, Pease Township, Belmont County, Ohio. It was built in 1826 and is one of Ohio's curving \"S\" bridges.","why_significant":"The bridge is significant under Criterion A as a segment of the National Road, which aided settlement of Ohio and served travelers for over a century. It is significant under Criterion C as an example of early stone arch bridge-building on the frontier, using local stone and a curved design to ease the steep approach to Blaine Hill. It retains most character-defining features such as arch rings, spandrel walls, parapets and piers.","narrative":"Carrying the old National Road across Wheeling Creek at Blaine, Ohio, this 356-foot sandstone bridge has three arches of 30, 40 and 50 feet and a curving plan that gives it the name \"S\" bridge. Completed in 1826, it sits at the foot of Blaine Hill, the steepest rise on the road in Ohio, and the curve gave travelers a longer, gentler approach while keeping the bridge square to the creek. It served traffic until a high-level concrete viaduct bypassed it in 1933, then carried a township road until 1994. Floodwaters collapsed part of the largest arch in 1998. The arch was rebuilt, and a 2004-2005 rehabilitation added concrete arches over the stone ones, repaired the spandrel walls and repaved the deck in brick. The bridge was listed for its link to the National Road and as a notable example of early stone arch engineering built from local materials. It now serves pedestrians.","period_of_significance":"1826-1933","architect_builder":null,"architectural_style":"No Style","criteria":["A","C"],"status_note":"Restored in 2004-2005 after a 1998 arch collapse; closed to vehicles, blocked by bollards, and open to pedestrians. Plans exist for a historical park.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:52:07.314697-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/10000082.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/10000082/49d4c4b799-800.webp","url_1600":"https://nationalhistoricalregister.com/media/10000082/49d4c4b799-1600.webp","licence":"CC BY 3.0","author":"Bwsmith84 (talk)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Blaine_Hill_S_Bridge_Ohio.jpg\" rel=\"noopener\">Bwsmith84 (talk)</a>, <a href=\"https://creativecommons.org/licenses/by/3.0\" rel=\"license noopener\">CC BY 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Blaine_Hill_S_Bridge_Ohio.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71986831","wikipedia":"https://en.wikipedia.org/wiki/Blaine_Hill_%22S%22_Bridge","wikidata":"https://www.wikidata.org/wiki/Q4923948"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/belmont-county/blaine-hill-s-bridge-10000082/"}