{"nrhp_refnum":"79000292","name":"Lock No. 39 and Spillway","other_names":["11 Mile Lock","See Also:Ohio and Erie Canal"],"category":"structure","location":{"address":"Canal Rd.","address_restricted":false,"city":"Valley View","county":"Cuyahoga County","state":"OH","lat":41.39038512900004,"lon":-81.62492289599999,"geom_source":"nps_gis"},"listed_date":"1979-12-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Engineering","Transportation","Exploration/Settlement"],"significance_levels":["state"],"summary":{"what_it_is":"Lock No. 39, known as the \"11 Mile Lock,\" and its spillway on the Ohio & Erie Canal, on the west side of Canal Road about 1,200 feet south of Rockside Road in Valley View, Cuyahoga County, Ohio. It was built 1825-1827.","why_significant":"The lock is part of the Ohio & Erie Canal, which linked Lake Erie with the Ohio River and strongly influenced Ohio's commerce, manufacturing and population growth for about 30 years. The stretch between Lock No. 36 and Lock No. 39 is described as the best preserved portion of the canal between Akron and Cleveland.","narrative":"Lock No. 39, called the \"11 Mile Lock,\" is a canal lock and spillway on the Ohio & Erie Canal in Valley View, Ohio. It sits on the west side of Canal Road, roughly 1,200 feet south of Rockside Road. Built between 1825 and 1827, it is a standard mitered-gate lock with a chamber 90 feet long and 15 feet wide. Its cut stone walls are covered with concrete applied around 1905 as a temporary repair. The south gate remains intact, but only the frame of the north gate survives. The Ohio & Erie Canal connected Lake Erie at Cleveland with the Ohio River at Portsmouth and was completed in 1832. For about three decades it shaped growth in commerce, manufacturing and population across Ohio. The section between Akron and Cleveland opened on July 4, 1827, dropping 395 feet through 41 locks. The stretch from Lock No. 36 to Lock No. 39 is described as the best preserved between the two cities. The adjacent towpath is now used for recreation.","period_of_significance":"1825-1827","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Condition listed as very good. The towpath is used for recreation. The south gate is intact, while only the frame of the north gate remains.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:13.04583-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/79000292.pdf"},"photo":null,"district":{"nrhp_refnum":"66000607","name":"Ohio and Erie Canal","url":"https://nationalhistoricalregister.com/districts/ohio/ohio-and-erie-canal-66000607/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71984702","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/cuyahoga-county/lock-no-39-and-spillway-79000292/"}