The Thirty-third Street Bridge in Philadelphia carries Thirty-third Street (

U.S. Route 13 U.S. Route 13 (US 13) is a north–south U.S. highway established in 1926 that runs for from Interstate 95 (I-95) just north of Fayetteville, North Carolina to US 1 in the northeastern suburbs of Philadelphia, Pennsylvania, in Morrisville. ...

) over the former course of Master Street in the Brewerytown section of North Philadelphia, near

Fairmount Park Fairmount Park is the largest municipal park in Philadelphia and the historic name for a group of parks located throughout the city. Fairmount Park consists of two park sections named East Park and West Park, divided by the Schuylkill River, with ...

. The bridge was built in 1901 with an unusual skewed arch, and listed on the

National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...

in 1988.

Ashlar Ashlar () is finely dressed (cut, worked) stone, either an individual stone that has been worked until squared, or a structure built from such stones. Ashlar is the finest stone masonry unit, generally rectangular cuboid, mentioned by Vitruv ...

, or dressed stone, covers the exterior of the arch, but the unusual skewed ribs are made of brick. The underpass is now inside an industrial area and normally closed even to foot traffic. The tracks of the former

Pennsylvania Railroad The Pennsylvania Railroad (reporting mark PRR), legal name The Pennsylvania Railroad Company also known as the "Pennsy", was an American Class I railroad that was established in 1846 and headquartered in Philadelphia, Pennsylvania. It was named ...

are located just to the north and pass under a large modern bridge on Thirty-third Street. NRHP Nomination form/ref> File:33rd st bridge Philly a.JPG, The single span stone arch, looking west File:33rd st Bridge Philly c.JPG, Looking east File:33rd St Bridge Philly HAER 361176pv.jpg, Looking west File:33rd St Bridge Philly HAER 361177pv.jpg, Interior stone and brickwork File:33rd St Bridge Philly HAER 361178pv.jpg, Detail at west end

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11 data pages
1 photo caption page Road bridges on the National Register of Historic Places in Pennsylvania Bridges completed in 1901 Bridges in Philadelphia Skew arch bridges Historic American Engineering Record in Philadelphia Lower North Philadelphia National Register of Historic Places in Philadelphia U.S. Route 13 Bridges of the United States Numbered Highway System Brick bridges in the United States Stone arch bridges in the United States 1901 establishments in Pennsylvania {{Pennsylvania-bridge-struct-stub

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