| 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 |
Burnt Mill Road Bridge
|
 | Burnt Mill Road Over Conodoguinet Creek | Rural: Franklin County, Pennsylvania | Metal 7 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 109 ft Main Span Length: 105 ft Roadway Width: 15.4 ft Main Spans: 1 |
1885 By: Pittsburgh Bridge Company of Pittsburgh, Pennsylvania | This is an extremely early surviving example of this regionally prolific and noteworthy bridge builder, and it has some unusual details. | 
|
Keggereis Ford Bridge
|
 | PA-4006 Over West Branch Conococheague Creek | Rural: Franklin County, Pennsylvania | Concrete Closed Spandrel (Ribbed) Deck Arch, Fixed |
Total Length: 108 ft Main Span Length: 45 ft Roadway Width: 12 ft Main Spans: 3 |
1907 By: Nelson Construction Company of Chambersburg, Pennsylvania | This is an early and uncommon example of a ribbed arch bridge. | 
|
Maclay's Mill East Bridge
|
 | Maclays Mill Road (PA-4018) Over Conodoguinet Creek Mill Race | Rural: Franklin County, Pennsylvania | Stone Segmental Deck Arch, Fixed |
Total Length: 45 ft Main Span Length: 20 ft Roadway Width: 16.7 ft Main Spans: 2 |
1827 By: Silas Harry of Chambersburg, Pennsylvania | This is the smaller of two nearby stone arch bridges that are significant as extremely old and unaltered examples of their type. | 
|
Maclay's Mill West Bridge
|
| Maclays Mill Road (PA-4018) Over Conodoguinet Creek | Rural: Franklin County, Pennsylvania | Stone Segmental Deck Arch, Fixed |
Total Length: 102 ft Main Span Length: 30.8 ft Roadway Width: 16.4 ft Main Spans: 3 |
1827 By: Silas Harry of Chambersburg, Pennsylvania | This is one of two nearby stone arch bridges that are significant as extremely old and unaltered examples of their type. | 
| ! |
Memorial Bridge
|
| Main Street (PA-16) Over West Branch Little Antietam Creek | Waynesboro: Franklin County, Pennsylvania | Concrete T-Beam, Fixed |
Total Length: 76 ft Main Span Length: 34 ft Roadway Width: 24 ft Main Spans: 2 |
1926 By: Unknown and Pennsylvania State Highway Department | This is a unique t-beam that has an unusually high level of aesthetic details since it was built to also serve as a memorial. | 
| X |
Mowersville Road Bridge
|
 | Mowersville Road Over Paxton Run | Mowersville: Franklin County, Pennsylvania | Metal 8 Panel Pratt Full-Slope Pony Truss, Fixed |
Total Length: 50 ft Main Span Length: 50 ft Roadway Width: 12 ft Main Spans: 1 |
By: Unknown | Although its floor and bottom chord is encased in a two-span concrete slab, this bridge remains a unique and nationally significant example of a cast iron truss bridge. | 
|
Pennsylvania Turnpike Exit 201 Bridge
|
 | I-76 (Pennsylvania Turnpike) Over Turnpike Ramp | Rural: Franklin County, Pennsylvania | Concrete Rigid-Frame, Fixed |
Total Length: 44 ft Main Span Length: 38 ft Roadway Width: 99 ft Main Spans: 1 |
1939 By: Unknown | One of the disappearing examples of original Pennsylvania Turnpike overpasses, this is an uncommon freeway over highway overpass with integrity. | 
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