County Bridge No. 171

County Bridge No. 171
U.S. National Register of Historic Places
County Bridge No. 171, 1982
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Location	Cedar Hollow Road over Valley Creek, Tredyffrin Township, Pennsylvania
Coordinates	40°3′12″N75°30′3″W / 40.05333°N 75.50083°W / 40.05333; -75.50083
Area	less than one acre
Built	1907
Built by	P.J. McCormick & Sons
Architectural style	Stone arch
MPS	Highway Bridges Owned by the Commonwealth of Pennsylvania, Department of Transportation TR
NRHP reference No.	88000762 [1]
Added to NRHP	June 22, 1988

County Bridge No. 171 is a historic stone arch bridge located in Tredyffrin Township, Chester County, Pennsylvania. It spans Valley Creek. It has three spans; the main span is 25 feet long and flanked by two 15-feet long spans. The bridge was constructed in 1907, of coursed rubble with brick arch rings and a contrasting parapet. ^[2]

It was listed on the National Register of Historic Places in 1988. ^[1]

References

1. "National Register Information System". National Register of Historic Places . National Park Service. July 9, 2010.
2. District 6-0 (November 1982). National Register of Historic Places Registration: Pennsylvania MPS County Bridge No. 171. National Archives and Records Administration. Retrieved December 14, 2025. (Downloading may be slow.)