| 33rd Street Railroad Bridge | |
|---|---|
| The downstream side of the 33rd Street Railroad Bridge. | |
| Coordinates | 40°27′57″N79°58′25″W / 40.4657°N 79.9736°W | 
| Carries | Allegheny Valley Railroad (P&W Subdivision) | 
| Crosses | Allegheny River | 
| Locale | Pittsburgh, Pennsylvania | 
| Other name(s) | B&O Railroad Bridge at 33rd Street and Herr's Island | 
| Characteristics | |
| Design | Truss bridge | 
| Material | Steel | 
| Longest span | 400 feet (120 m) | 
| Clearance below | 44.9 feet (13.7 m) | 
| History | |
| Opened | 1921 | 
| Location | |
|   | |
The 33rd Street Railroad Bridge is a truss bridge that carries the Allegheny Valley Railroad on the P&W Subdivision over the Allegheny River that connects downtown Pittsburgh, Pennsylvania to Herrs Island, Pittsburgh, United States.
The Allegheny River was first crossed at this point by a railroad bridge built in 1884 [1] by the Iron City Bridge Works, which moved to Pittsburgh from Cincinnati in 1856. [2]
This was replaced by the B&O bridge in 1921. [3]