Bridge in Upper Merion Township is a historic stone arch bridge located at Gulph Mills in Upper Merion Township, Pennsylvania, now known as the "Trinity Lane Bridge". The bridge crosses Gulph Creek, and was built in 1789. It has a single span with a width of 34 feet (10.4 m), and an overall length of . ()
The bridge's datestone features an archaic spelling of "Federal":
The Bridge in Upper Merion was listed on the National Register of Historic Places in 1988. As of August 2021, it was the fifth-oldest bridge in use in the United States.
In 2021, the bridge structure was repaired and rehabilitated by contractor J.D. Eckman, with 100% funding from the Pennsylvania Department of Transportation, also known as PennDOT.PennDOT
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