Bridge between East Manchester and Newberry Townships
Why it's listed
A single-span, pin-connected Pennsylvania (Petit) truss bridge built in 1889 carries Route 181 across Conewago Creek between East Manchester and Newberry Townships in York County. The Wrought Iron Bridge Company of Canton, Ohio, which the form describes as an important nineteenth-century bridge company, supplied the structure. It measures 299 feet overall, with a main span of 295 feet, and its superstructure is steel, with a sloped Pennsylvania web and pin connections. The bridge has a deck-type appearance with round handrail and guardrail. Its significance lies in its engineering: it is a typical example of the Pennsylvania truss form and one of eight representative examples included in the multiple-resource group. Its location is unusual, as it is one of only four metal truss bridges in southeastern Pennsylvania, while most others in the group stand in the north central, northwestern and southwestern parts of the state.
Significance in brief: The nomination describes the bridge as a typical example of the Pennsylvania (Petit) truss type and as one of eight representative examples of that type included in the multiple-resource nomination. It is regarded as unusual for its location, being one of only four metal truss bridges in southeastern Pennsylvania. The form gives Engineering as the area of significance.
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 88000795, 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 250 over Conewago Creek, Conewago Heights |
|---|---|
| County | York County |
| Listed | June 22, 1988 |
| Reference number | 88000795 |
| Resource type | Structure |
| Period of significance | 1889 |
| Architectural style | Pennsylvania (Petit) truss |
| Areas of significance | Engineering |
| Level of significance | State |
| Acreage | 0.9 |
| Coordinates | 40.08145, -76.71720 (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 88000795.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q4966329
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.