{"nrhp_refnum":"10000227","name":"Lower Dock Hill Road Stone Arch Bridge","other_names":[],"category":"structure","location":{"address":"Dock Hill Rd","address_restricted":false,"city":"Cornwall-on-Hudson","county":"Orange County","state":"NY","lat":41.44495955200006,"lon":-74.00288038099995,"geom_source":"nps_gis"},"listed_date":"2010-04-28","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Transportation"],"significance_levels":["local"],"summary":{"what_it_is":"A single-arch stone road bridge on Dock Hill Road in the Village of Cornwall-on-Hudson, Orange County, New York, dated to about 1850. It carried a spur road to the Hudson River wharves at Cornwall Landing over a small creek.","why_significant":"The bridge represents mid-19th century stone arch construction on a modest scale, built before standardized metal truss bridges appeared. Its location on the road to the Cornwall Landing wharves ties it to the village's river-based transportation history. The upper parapet walls were altered, which reduced its integrity, but the bearing arch survives intact.","narrative":"This single-arch masonry bridge carries a spur of Dock Hill Road over a small creek in Cornwall-on-Hudson, New York. Built of locally quarried stone bedded in mortar, it has an elliptical arch with rock-faced voussoirs and roughly dressed spandrel walls. The builder is unknown, and the date of about 1850 was assigned by comparison with other Hudson Valley stone arch bridges and a nearby bridge on Dock Hill Road Extension. In the later 19th century the road it served led to wharves at Cornwall Landing, first mapped as a wharf road and later as Clark Street, so the bridge reflects the era of river shipping before rail dominated. During the 20th century the parapets were lowered and finished with concrete copping, and metal barriers closed the road to vehicles. Despite these changes the arch survives, and the bridge is listed as a modest but representative example of 19th century stone arch construction and village transportation infrastructure.","period_of_significance":"c. 1850 - c. 1959","architect_builder":"Unknown","architectural_style":null,"criteria":["A","C"],"status_note":"Closed to vehicular traffic by metal barriers and now accommodates only limited pedestrian use; the parapets were lowered and capped with concrete in the 20th century.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:48.82424-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/10000227.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/10000227/4483ba953e-800.webp","url_1600":"https://nationalhistoricalregister.com/media/10000227/4483ba953e-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:LOWER_DOCK_HILL_ROAD_STONE_ARCH_BRIDGE,_ORANGE_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:LOWER_DOCK_HILL_ROAD_STONE_ARCH_BRIDGE,_ORANGE_COUNTY,_NY.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75314239","wikipedia":"https://en.wikipedia.org/wiki/Lower_Dock_Hill_Road_Stone_Arch_Bridge","wikidata":"https://www.wikidata.org/wiki/Q6693451"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/orange-county/lower-dock-hill-road-stone-arch-bridge-10000227/"}