Bridge between Guilford and Hamilton Townships
Why it's listed
Stone arch bridge carrying vehicular traffic across the Conococheague Creek between Guilford and Hamilton Townships in Franklin County, Pennsylvania. Its construction date is unknown, though the form places it before 1860. The bridge has two arches, each spanning 36 feet, making them somewhat longer than those of comparable bridges in the county. Its piers are semi-pyramidal and built of roughly coursed local limestone, with roughly cut limestone coping along the top. The structure is recorded in F. F. Unger's 1941 study Old Bridges of Franklin County, where it is identified as bridge number 13. The bridge is regarded as one of four very fine turnpike bridges of the nineteenth century in the county, and few stone bridges of its kind still stand there. Its arches have been gunited and repointed, and the parapet cap has received concrete repairs. The nominated area covers the superstructure and substructure only, within a rectangle of about 100 by 25 feet.
Significance in brief: The nomination describes it as one of four very fine nineteenth-century turnpike bridges in Franklin County. Its configuration and workmanship are described as typical of many stone arch bridges built in the county in that century, and few such stone bridges remain standing. Its use of roughly coursed local limestone, semi-pyramidal piers and coping are said to be typical of county bridges built before 1860.
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 88000776, listed June 22, 1988. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence medium).
Key facts
| Address | LR 28033 over Conococheque Creek, Social Island |
|---|---|
| County | Franklin County |
| Listed | June 22, 1988 |
| Reference number | 88000776 |
| Resource type | Structure |
| Architectural style | Stone arch (camelback) |
| Areas of significance | Engineering |
| Level of significance | State |
| Status (as stated in the nomination) | Arches gunnited and repointed; concrete repair to parapet cap; marked as altered. |
| Acreage | 0.9 |
| Coordinates | 39.88601, -77.71298 (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.
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 88000776.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q4966330
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.