Grant Mills Covered Bridge
Approximate location: the National Park Service places this pin arbitrarily within the property, not at a surveyed point (stated accuracy ±12 m).
Why it's listed
Spanning Mill Brook in the western Catskills, this covered timber bridge was built in 1902 to carry Mill Brook Road in the town of Hardenbergh. Local timber framer and sawyer Edgar A. Marks won the contract, hauled the stone for the abutments, and sawed the planks with help from his son Orrin and other local craftsmen. The span opened to traffic on December 8, 1902. It measures about 69 feet long and uses the Town lattice truss, with paired planks joined by wooden pins, resting on dry-laid fieldstone abutments. The road was realigned in 1964, leaving the bridge bypassed beside the modern route. Descendants of the builder restored it from 1990 to 1992, repairing the trusses, resheathing the walls and adding a new roof. It is valued as a rare and largely intact example of vernacular engineering, built by local craftsmen from native materials, and as one of only ten Town lattice covered bridges remaining in New York State.
Significance in brief: The nomination argues it is a rare, substantially intact example of rural vernacular bridge design and construction in the Catskill region. It uses the patented Town lattice truss and is a late example of that type, showing timber construction persisting into the early automobile age. It is described as one of only ten Town lattice truss covered timber bridges surviving in New York State.
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 98001538, listed December 17, 1998. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | Mill Brook Rd., over Mill Brook, Hardenbergh |
|---|---|
| County | Ulster County |
| Listed | December 17, 1998 |
| Reference number | 98001538 |
| Resource type | Structure |
| Period of significance | 1902 |
| Architect / builder | Edgar Marks, Orrin B. Marks |
| Architectural style | No style |
| Criteria |
|
| Areas of significance | Transportation, Engineering |
| Level of significance | Local |
| Status (as stated in the nomination) | Removed from service in 1964 when Mill Brook Road was realigned; restored 1990-1992 for pedestrian use and maintained as a local historic landmark by the town. Current function listed as vacant/not in use. |
| Acreage | 0.9 |
| Coordinates | 42.08010, -74.62868 (NPS GIS) |
What listing means for this property
For a publicly owned building or structure, listing mainly matters when federal funds, permits or licences are involved: projects then go through Section 106 review so effects on the property are considered. Listing also strengthens applications for preservation grants and, for leased income-producing uses, can enable the federal rehabilitation tax credit.
Noted as vacant in the nomination. Nomination documents can be decades old; current status may differ. If you are considering buying an empty listed property, read the due-diligence checklist.
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 98001538.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5596677
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.