Thirty-third Street Bridge in Philadelphia

{{Use mdy dates|date=January 2025}}

{{Use American English|date=January 2025}}

{{Infobox NRHP

| name = Thirty-third Street Bridge in Philadelphia

| nrhp_type =

| image = 33rd st bridge Philly b.JPG

| caption = The skewed brick ribs, looking west

| location = {{jct|state=PA|US|13|name1=Thirty-third Street}} over Master St., Philadelphia, Pennsylvania

| coordinates = {{coord|39|58|42|N|75|11|22|W|display=inline,title}}

| locmapin = Philadelphia#Pennsylvania#USA

| built = 1901

| architecture = Single span stone skew arch

| added = June 22, 1988

| area = less than one acre

| mpsub = {{NRHP url|id=64000726|title=Highway Bridges Owned by the Commonwealth of Pennsylvania, Department of Transportation TR}}

| refnum = 88000847{{NRISref|2009a}}

}}

The Thirty-third Street Bridge in Philadelphia carries Thirty-third Street (U.S. Route 13) over the former course of Master Street in the Brewerytown section of North Philadelphia, near Fairmount Park. The bridge was built in 1901 with an unusual skewed arch, and listed on the National Register of Historic Places in 1988. Ashlar, 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 are located just to the north and pass under a large modern bridge on Thirty-third Street.[{{NRHP-PA|H000107_01D.pdf}} NRHP Nomination form]

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