Chandler Mill Bridge
Also known as: Chandlers Mill Bridge; Chester County Bridge No. 236
Why it's listed
Built in 1910 across the West Branch of Red Clay Creek in Kennett Township, Chester County, Chandler Mill Bridge is a 47-foot single-span, built-up steel plate through girder bridge with a concrete deck, carried on hand-laid fieldstone abutments and wingwalls capped with slate. The county built it to replace a township bridge on Chandler Mill Road that had flooded because it was set too low and was too narrow. It was erected by private contractor George Dole under County Engineer Nathan R. Rambo. The structure is considered important as a surviving example of a bridge type common in Chester County from the 1890s to the 1930s, when steel through girders were the favored form for county road bridges. Its plain, practical design reflects municipalities seeking durable, inexpensive crossings. The bridge also records the shift in responsibility for local roads from townships to the county in the early twentieth century. A stone plaque on the north wingwall lists the county commissioners and officials of the period.
Significance in brief: The nomination argues the bridge is locally significant under transportation and engineering for documenting the county's assumption of local bridge responsibilities from townships. It is also presented as an example of the through girder plate girder type, built across Chester County from the 1890s to the 1930s as an inexpensive, practical road bridge with no aesthetic considerations.
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 09001213, listed January 11, 2010. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence medium).
Key facts
| Address | Kennett Township, Kennett |
|---|---|
| County | Chester County |
| Listed | January 11, 2010 |
| Reference number | 09001213 |
| Resource type | Structure |
| Period of significance | 1910 |
| Architect / builder | Rambo, Nathan R., P.E. (planner/surveyor per amendments); Dole, George (contractor) |
| Criteria |
|
| Areas of significance | Transportation, Engineering |
| Level of significance | Local |
| Status (as stated in the nomination) | Amendments state the 2009 inspection rated the bridge in overall poor condition, though the main description calls it in fair condition; the deck was blacktopped after 1997. |
| Acreage | 0.9 |
| Coordinates | 39.81335, -75.71310 (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 09001213.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5071177
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.