| 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 |
15 Mile Creek Road Bridge
|
 | National Pike (15 Mile Creek Road, US-40) Over 15 Mile Creek | Rural: Allegany County, Maryland | Concrete Open Spandrel Deck Arch, Fixed |
Total Length: 116 ft Main Span Length: 65 ft Roadway Width: 24 ft Main Spans: 1 |
1917 By: Unknown | The railings and details of the arch make this an attractive bridge. | 
|
Flintstone Bridge
Concrete |
| National Pike (MD-144) Over Flintstone Creek | Rural: Allegany County, Maryland | Closed Spandrel Deck Arch, Fixed |
Total Length: 48 ft Main Span Length: 46 ft Roadway Width: 24 ft Main Spans: 1 |
1900 By: Unknown | This stone and brick arch was widened with concrete making it look like a concrete arch today. | 
|
Gilpin Road Bridge
|
| Gilpin Road (Old National Pike, MD-144E) Over Town Creek | Rural: Allegany County, Maryland | Concrete Closed Spandrel Deck Arch, Fixed |
Total Length: 73.2 ft Main Span Length: 71 ft Roadway Width: 24 ft Main Spans: 1 |
1925 By: Unknown | This traditional concrete arch bridge is a part of the old alignment of the National Pike. | 
|
Old Williams Road Bridge
|
 | Old Williams Road Over Town Creek | Rural: Allegany County, Maryland | Metal 5 Panel Pin-Connected Pratt Full-Slope Pony Truss, Fixed and Approach Spans: Metal 4 Panel Rivet-Connected Warren (No Verticals) Pony Truss, Fixed |
Total Length: 141 ft Main Span Length: 73.2 ft Roadway Width: 14 ft Main Spans: 1 |
1910 By: Unknown | This bridge has two different span designs and contrasts metal truss bridge technology. | 
|
Town Creek Road Bridge
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| Town Creek Road (Old Alignment) Over Town Creek | Rural: Allegany County, Maryland | Concrete Closed Spandrel Deck Arch, Fixed |
Total Length: 94 ft Main Span Length: 44.8 ft Roadway Width: 11 ft Main Spans: 2 |
1919 By: Unknown | This is a rural and extremely narrow concrete arch bridge that has been bypassed and abandoned. | 
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