Thirty-third Street Bridge in Philadelphia, Arch bridge in Brewerytown, Philadelphia, United States.
The Thirty-third Street Bridge is a stone arch structure in Philadelphia that carries Thirty-third Street over Master Street with a distinctive angled design. Built entirely from dressed stone and brick, the skewed ribs follow the crossing at an oblique angle rather than perpendicular to the banks.
Built in 1901, the bridge demonstrates early 20th-century engineering techniques used to solve crossing challenges in the city. Its recognition on the National Register in 1988 acknowledged its value as an important example of infrastructure from that industrial era.
The bridge stands as part of Philadelphia's collection of over 600 structures listed on the National Register, reflecting the city's architectural preservation efforts.
The bridge sits in an industrial zone near Fairmount Park and can be viewed from the street or pedestrian paths on either side. Daytime visits offer better visibility of the stonework and architectural details.
The structure features an uncommon skewed arch pattern that differs from typical bridge designs of its time period. This design was necessary because Thirty-third Street crosses Master Street at an oblique angle rather than perpendicular.
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