St. Vincent Archabbey Gristmill
Also known as: The Gristmill
Why it's listed
Built in 1854 at the foot of the hill at Saint Vincent Archabbey in Latrobe, the gristmill was constructed by the Benedictine monks of Saint Vincent Monastery. It was designed as a steam mill of about 45 by 40 feet and four stories, with an 1855 addition and a further addition in 1883. Its frame is hand-hewn chestnut and its foundation is local sandstone. The mill has never been water-powered; steam was the original source, and electric motors replaced it in 1952. Three French flint millstones, each about three tons, remain in use alongside original bucket elevators, belt conveyors and sifting machines. Because it has operated continuously for well over a century and retains most of its original methods and equipment, it is regarded as a rare working example of a nineteenth-century gristmill. The mill also served as the economic and social center of the surrounding agricultural community, and its layout reflects the monastery's building traditions.
Significance in brief: The nomination argues the mill is significant for its agricultural and engineering role and its continuous operation for over a century, with its original stones, elevators and belt drives still in use. It also cites the monastic building tradition of the Benedictine community that constructed it and the mill's value for showing a nineteenth-century milling system in operation.
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 78002486, listed January 18, 1978. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence medium).
Key facts
| Address | SW of Latrobe off U.S. 30, Latrobe |
|---|---|
| County | Westmoreland County |
| Listed | January 18, 1978 |
| Reference number | 78002486 |
| Resource type | Building |
| Period of significance | 1850-1899 |
| Architect / builder | Saint Vincent Monastery (Benedictine monks) |
| Criteria |
|
| Areas of significance | Engineering, Architecture, Religion, Agriculture |
| Level of significance | Local |
| Status (as stated in the nomination) | In continued use and in good interior condition; the exterior siding is described as deteriorated. |
| Acreage | 1 |
| Coordinates | 40.29540, -79.40249 (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 78002486.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q7592077
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.