| Special Bridge Conditions Legend |
| ! | Confirmed demolition date within one year or an especially historic bridge that is threatened with demolition at any level. |
| X | The bridge has been confirmed demolished or collapsed. |
| S | The bridge has been dismantled or moved to an offsite location and is not currently available for public viewing. |
| L | Most or all of the original bridge material has been demolished and replaced, including historically significant elements, but some original parts of the bridge remain. |
| Note: This website cannot guarantee the current condition of any bridge on this website. Bridges lacking these icons should not necessarily be considered condition-free. |
| Bridge Name | HSR Rating | Facility Carried / Feature Intersected | Location | Structure Type | Structure Dimensions | Construction Date / Builder or Contractor | Description | Thumbnail | X |
Blake's Bridge
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 | Main Street (PA-36) Over North Fork Creek | Brookville: Jefferson County, Pennsylvania | Metal Continuous Stringer (Multi-Beam), Fixed |
Total Length: 110 ft Main Span Length: 49 ft Roadway Width: 24.3 ft Main Spans: 2 |
1926 By: Farris Bridge Company of Pittsburgh, Pennsylvania and G. A. Flink | This concrete encased steel stringer had unusual but attractive railings that were different on each side. | 
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Brookville Viaduct
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 | Railroad (Pittsburg and Shawmut) Over Sandy Lick Creek and Railroad (Pennsylvania Railroad) | Rural: Jefferson County, Pennsylvania | Metal 8 Panel Rivet-Connected Warren Deck Truss, Fixed and Approach Spans: Metal 5 Panel Rivet-Connected Pratt Through Truss, Fixed | Main Spans: 1 | 1906 By: Unknown | This impressive bridge has a curve to it and has a variety of interesting span types. | 
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Dellwood Viaduct
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 | Railroad (Buffalo and Pittsburgh) Over Railroad (Buffalo and Pittsburgh), Rattlesnake Creek, and US-219 | Brockway: Jefferson County, Pennsylvania | Metal Through Girder, Fixed and Approach Spans: Metal Deck Girder, Fixed | 1907 By: Unknown | This is a fairly long multi-span riveted deck plate girder bridge with attractive steel bents for supports. | 
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