Maclay's Twin Bridge (West) is a historic multi-span stone arch bridge spanning a tributary of Conodoguinet Creek between Lurgan Township and Southampton Township in Franklin County, Pennsylvania. It is a bridge with three spans, the longest of which measures long. It was constructed in 1827 and is a twin of McClay's Twin Bridge (East). ()

The bridge was listed on the National Register of Historic Places in 1988.

See also List of bridges documented by the Historic American Engineering Record in Pennsylvania Maclay's Mill

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