County Bridge No. 54

County Bridge No. 54 is a historic stone arch bridge located near Prospectville in Whitemarsh Township, Montgomery County, Pennsylvania. The bridge was built in 1841 and rebuilt in 1916. It has three 28 ft spans with an overall length of 125 ft. The bridge crosses a branch of Wissahickon Creek.

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