| 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 |
Bordell Crossroads Bridge
|
 | Bordell Crossroads (TR-350) Over Cole Creek | Rural: McKean County, Pennsylvania | Metal 3 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 60 ft Main Span Length: 48 ft Roadway Width: 12 ft Main Spans: 1 |
By: Unknown | This small pony truss has had load-bearing stringers added, but continues to display its unusual design details. | 
|
Larabee Railroad Bridge
|
| Railroad (Conrail) Over Allegheny River | Rural (Larabee): McKean County, Pennsylvania | Metal 6 Panel Pin-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed |
Main Span Length: 151.8 ft Main Spans: 1 |
1900 By: Pencoyd Iron Works of Pencoyd, Pennsylvania, A and P Roberts, Agents | This is an attractive railroad through truss bridge with traditional composition. | 
| ! |
Marvin Street Bridge
|
 | Marvin Street (US-6) Over Marvin Creek | Smethport: McKean County, Pennsylvania | Concrete T-Beam, Fixed |
Total Length: 100 ft Main Span Length: 30.8 ft Roadway Width: 38.4 ft Main Spans: 3 |
1921 By: Unknown | This 1921 bridge was widened so it today displays the appearance of a 1946 bridge. | 
|
Valley Crossroad Bridge
|
 | Valley Crossroad (Farmers Valley Road, TR-385) Over Potato Creek | Rural: McKean County, Pennsylvania | Metal 8 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 146 ft Main Span Length: 144 ft Roadway Width: 15.7 ft Main Spans: 1 |
1888 By: Variety Ironworks of Cleveland, Ohio | This beautiful bridge is an outstanding and extremely rare example of its builder. | 
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