{"nrhp_refnum":"05001391","name":"Rockland Road Bridge","other_names":["Dot Bin # 3224170"],"category":"structure","location":{"address":"Rockland Rd., (bounded by Piermont and Ferdon Aves.)","address_restricted":false,"city":"Village of Piermont","county":"Rockland County","state":"NY","lat":41.03503695100005,"lon":-73.91913913399998,"geom_source":"nps_gis"},"listed_date":"2005-12-07","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["local"],"summary":{"what_it_is":"A single-span brick and stone arch road bridge built in 1874 over Sparkill Creek in the Village of Piermont, Rockland County, New York, linking Piermont and Ferdon avenues.","why_significant":"The bridge is locally significant as an intact example of nineteenth century masonry arch bridge construction, a traditional method that was losing ground to standardized metal truss bridges. It sits at the historic head of navigation on Sparkill Creek, beside Haddock Hall, and is described as a noteworthy masonry arch bridge in Rockland County.","narrative":"Rockland Road Bridge carries a short stretch of road over Sparkill Creek in the Village of Piermont, joining Piermont and Ferdon avenues. Built in 1874, it is a single-span arch about 22 feet long and 30 feet wide, made of red brick for the arch and roughly dressed local stone for the spandrel and wing walls. The mix of brick and stone gives it a distinctive two-tone look. The bridge sits at what was historically the head of navigation on the creek, a tributary of the Hudson River that helped spur the growth of Piermont, and it stands beside Haddock Hall, completed two years later. Its significance rests on its value as a surviving example of traditional masonry arch construction, a method that fell out of favor as standardized metal truss bridges spread. The builders are unknown. Some repointing and wing wall repair were needed when the property was documented, though the structure remained largely intact.","period_of_significance":"1874","architect_builder":null,"architectural_style":null,"criteria":["C"],"status_note":"Largely intact, but repointing is needed and the southwest wing wall has partially collapsed; the county highway department was working on repairs. The road remains in use carrying two lanes of traffic.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:54.145956-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/05001391.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/05001391/5ae08033cc-800.webp","url_1600":"https://nationalhistoricalregister.com/media/05001391/5ae08033cc-1600.webp","licence":"CC BY-SA 4.0","author":"JERRYE &amp; ROY KLOTZ, M.D.","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Rockland_ROAD_BRIDGE,_PIERMONT,_ROCKLAND_COUNTY,_NY.jpg\" rel=\"noopener\">JERRYE &amp;amp; ROY KLOTZ, M.D.</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Rockland_ROAD_BRIDGE,_PIERMONT,_ROCKLAND_COUNTY,_NY.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75321488","wikipedia":"https://en.wikipedia.org/wiki/Rockland_Road_Bridge","wikidata":"https://www.wikidata.org/wiki/Q7355460"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/rockland-county/rockland-road-bridge-05001391/"}