Lock No. 29 and Aqueduct
Also known as: Peninsula Lock
Why it's listed
Lock No. 29, known as the Peninsula Lock, and the remains of its aqueduct are part of the Ohio and Erie Canal at Peninsula, Summit County, Ohio. Built between 1825 and 1827, both are made of cut stone. The lock is a standard mitered-gate type with a chamber measuring 90 by 15 feet. At Peninsula the Cuyahoga River bends so sharply that it returns within fifty feet of itself, and the canal crossed the river here on an aqueduct. A source cited in the form describes it as a wooden trough with a plank towpath carried on stone arches. The aqueduct originally had two spans. Its center pier was later removed when a single-span steel structure replaced it, and that structure was destroyed in the great flood of 1913. The stone abutments remain, and the lock sits at the northern approach. The site lies within a village that retains much of its mid-nineteenth century canal and mercantile character.
Significance in brief: The lock and aqueduct abutments are surviving parts of the Ohio and Erie Canal, which the reviewers described as important in the region's development. They lie within Peninsula, which preserves a largely intact mid-nineteenth century canal and mercantile town.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 79000305, listed December 11, 1979. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | off SR 303, Peninsula |
|---|---|
| County | Summit County |
| Listed | December 11, 1979 |
| Reference number | 79000305 |
| Resource type | Structure |
| Period of significance | 1825-1827 |
| Areas of significance | Commerce, Engineering, Transportation, Exploration/Settlement |
| Level of significance | State |
| Status (as stated in the nomination) | Listed condition is good; the lock and aqueduct abutments survive, while the later steel aqueduct was destroyed in the 1913 flood. |
| Acreage | 2 |
| Within district | Peninsula Village Historic District |
| Coordinates | 41.24281, -81.55047 (NPS GIS) |
What listing means for this property
National Register listing is honorary: it recognises significance and does not restrict what a private owner may do without federal money or permits. It unlocks the 20% federal rehabilitation tax credit for income-producing buildings, state credits in many states, and Section 106 review when federal agencies are involved. See what listing means in practice.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 79000305.
- Nomination form (PDF, National Archives) — catalog entry
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.