| 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 |
Birmingham Bridge
|
 | Irish Flats Lane (TR-512) Over Little Juniata River | Birmingham: Blair County, Pennsylvania and Huntingdon County, Pennsylvania | Metal 5 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 145 ft Main Span Length: 142 ft Roadway Width: 14.8 ft Main Spans: 1 |
1898 By: Penn Bridge Company of Beaver Falls, Pennsylvania and J. A. Patterson | This extremely unusual bridge has decorative portal bracing and a very massive design for a bridge of its type and age. | 
| ! |
Ironville Bridge
|
 | Ironville Road (PA-1014) Over Little Juniata River | Ironville: Blair County, Pennsylvania | Concrete Closed Spandrel Deck Arch, Fixed |
Total Length: 166 ft Main Span Length: 76 ft Roadway Width: 22 ft Main Spans: 2 |
1912 By: Curwensville Construction Company of Curwensville, Pennsylvania | This attractive concrete arch bridge was allowed to deteriorate and then condemned to demolition by PennDOT. | 
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Ironville Railroad Bridge
Tyrone Forge Railroad Bridge |
 | Railroad (Norfolk Southern) Over Little Juniata River | Ironville: Blair County, Pennsylvania | Stone Elliptical Deck Arch, Fixed | Main Spans: 3 | By: Unknown | This stone arch bridge has for decades been one of a trio of historic bridges in this area. | 
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Tyrone Forge Viaduct
PA-453 Little Juniata River Bridge |
 | PA-453 (PA-45 Truck Route) Over Little Juniata River and PA-1015 | Tyrone Forge: Blair County, Pennsylvania | Concrete Continuous Curved T-Beam, Fixed |
Total Length: 250 ft Main Span Length: 61 ft Roadway Width: 34.5 ft Main Spans: 4 |
1937 By: R. C. Burket and Pennsylvania State Highway Department | This early and rare example of a continuous curved t-beam has been beautifully rehabilitated by PennDOT. | 
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