| 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 |
Charlestown Bridge
|
 | Rutherford Avenue (Joe Tecce Way, Washington Street) Over Charles River | Boston: Suffolk County, Massachusetts | Metal Pin-Connected Pratt Through Truss, Movable: Swing (Center Pier) and Approach Spans: Metal Deck Girder, Fixed |
Total Length: 1089 ft Main Span Length: 241.2 ft Roadway Width: 66 ft Main Spans: 1 |
1900 By: Unknown | This beautiful, yet unusual bridge is a very large swing bridge features four truss lines and vertical endposts. | 
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Congress Street Bridge
|
 | Congress Street Over Fort Point Channel | Boston: Suffolk County, Massachusetts | Metal Rivet-Connected Warren Pony Truss, Movable: Bascule (Heel Trunnion) and Approach Spans: Metal Deck Girder, Movable: Bascule |
Total Length: 547 ft Main Span Length: 93.8 ft Roadway Width: 40 ft Main Spans: 2 |
1930 By: Boston Bridge Works of Boston, Massachusetts and Strauss Bascule Bridge Company of Chicago, Illinois | One of several historic movable bridges in this area of Boston. | 
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