| 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 |
Casselman Bridge
Little Crossings Bridge |
 | Abandoned National Road Over Casselman River | Grantsville: Garrett County, Maryland | Stone Segmental Deck Arch, Fixed |
Total Length: 354 ft Main Span Length: 80 ft Roadway Width: 48 ft Main Spans: 1 |
1813 By: David Shriver Jr. | Featuring a large 80 foot span, this bridge is among the oldest bridges in the county! | 
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Grantsville Bridge
|
 | US-40 Alt Over Casselman River | Grantsville: Garrett County, Maryland | Metal 7 Panel Rivet-Connected Pratt Through Truss, Fixed |
Total Length: 137 ft Main Span Length: 133 ft Roadway Width: 40 ft Main Spans: 1 |
1932 By: Unknown | This excellent example of a 1930s standard plan Maryland truss bridge is located in a very beautiful setting. | 
|
Maple Grove Road Bridge
|
 | Maple Grove Road Over Casselman River | Casselman (Rural): Garrett County, Maryland | Concrete Closed Spandrel Deck Arch, Fixed |
Total Length: 57 ft Main Span Length: 55 ft Roadway Width: 11.5 ft Main Spans: 1 |
1928 By: Concrete Steel Bridge Company of Clarksburg, West Virginia | A small concrete arch bridge with altered railings. | 
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