{"nrhp_refnum":"73001500","name":"Maumee Sidecut","other_names":[],"category":"structure","location":{"address":"N of Maumee River, SW of Ewing Island","address_restricted":false,"city":"Maumee","county":"Lucas County","state":"OH","lat":41.560503486000044,"lon":-83.65238926737263,"geom_source":"nps_gis"},"listed_date":"1973-04-11","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Engineering","Transportation"],"significance_levels":["state"],"summary":{"what_it_is":"A 1.7-mile canal sidecut in the city of Maumee, Lucas County, Ohio, built in the late 1830s to link the Miami-Erie Canal with the Maumee River. It originally had six cut-stone locks and is now part of a public park.","why_significant":"The sidecut was part of the Miami-Erie Canal system and sat where traffic bound for the Maumee River left the main line. The nomination calls it one of the outstanding engineering achievements of the early Ohio canal system and stresses its importance to the settlement and growth of northern Ohio. It operated only briefly before the state abandoned it in 1850.","narrative":"Built in the late 1830s, the Maumee Sidecut was a 1.7-mile canal section that let boats move between the Miami-Erie Canal and the Maumee River. Six locks of cut stone shipped from Marblehead raised or lowered vessels about 50 feet. Surveying began in 1824, but funding disputes, the Ohio-Michigan boundary conflict, rivalry among Toledo, Perrysburg and Maumee over the canal's end, and a financial panic delayed completion until 1842. Traffic began in May 1843. After the full canal opened in 1845, the sidecut was used heavily, and 375 boats passed through in 1848. Extension of the main line into Toledo bypassed it, and the state abandoned it in 1850. It was listed as an outstanding engineering achievement of Ohio's early canal era. Today it forms part of a park. The masonry of locks two, three, four and six remains, lock five carries a bridge, and lock one was removed for a highway.","period_of_significance":"1843-1850","architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Now part of a park, owned by the Toledo Metropolitan Park District. Lock one was removed for a highway. Locks two, three, four and six survive as masonry with all hardware missing. Lock five was altered to serve as a bridge base. Condition is marked fair and altered.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:10.139698-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/73001500.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/73001500/0dafd8f5b8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/73001500/0dafd8f5b8-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Locks_Four_and_Three,_Miami_Sidecut.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Locks_Four_and_Three,_Miami_Sidecut.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71990041","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q49262243"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/lucas-county/maumee-sidecut-73001500/"}