| 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 |
Ambassador Bridge
|
 | I-75 Ramp / KH-3 Over Detroit River | Detroit and Windsor: Wayne County, Michigan and Essex County, Ontario | Metal Pony Truss Stiffening Wire Cable Suspension, Fixed |
Total Length: 7500 ft Main Span Length: 1850 ft Roadway Width: 55 ft Main Spans: 1 |
1929 By: McClintic-Marshall Company of Pittsburgh, Pennsylvania and Modjeski and Masters | Serving as the centerpiece landmark for Detroit and Windsor, this privately-owned bridge was once the longest suspension bridge in the world. | 
|
Benjamin Franklin Bridge
Ben Franklin Bridge |
| I-676 (US-30) and PATCO Over Delaware River and Streets | Philadelphia: Philadelphia County, Pennsylvania and Camden County, New Jersey | Metal Pony Truss Stiffening Wire Cable Suspension, Fixed and Approach Spans: Metal Rivet-Connected Warren Deck Truss, Fixed |
Total Length: 8170.3 ft Main Span Length: 1750 ft Roadway Width: 77.8 ft Main Spans: 3 |
1926 By: American Bridge Company of New York, New York and Modjeski and Masters | The longest suspension span in the world when first built, this bridge remains one of the best examples of its kind in the country. | 
|
Blue Water Bridge
Original/Westbound Span |
 | I-69 and I-94 / KH-402 Over St. Clair River | Port Huron and Sarnia (Point Edward): St. Clair County, Michigan and Lambton County, Ontario | Metal Cantilever (Arched) Rivet-Connected Polygonal Warren Through Truss, Fixed and Approach Spans: Metal Rivet-Connected Warren Deck Truss, Fixed |
Total Length: 6178 ft Main Span Length: 871 ft Roadway Width: 32 ft Main Spans: 3 |
1938 By: American Bridge Company of New York, New York and Modjeski and Masters | Designed by Modjeski and Masters, this monumental bridge features an extremely rare shape of cantilever and continues to carry unimaginable traffic. | 
|
Brent Spence Bridge
|
 | I-75 and I-70 Over Ohio River | Cincinnati and Covington: Hamilton County, Ohio and Kenton County, Kentucky | Metal Cantilever Rivet-Connected Warren Through Truss, Fixed |
Total Length: 1736.4 ft Main Span Length: 830.8 ft Roadway Width: 91.8 ft Main Spans: 3 |
1963 By: American Bridge Company of New York, New York and Modjeski and Masters | This impressive double deck cantilever truss bridge features an attractive design despite its relatively late construction date. | 
|
Market Street Bridge
|
 | Market Street (PA-3012) Over Susquehanna River | Harrisburg: Dauphin County, Pennsylvania | Concrete Closed Spandrel Deck Arch, Fixed |
Total Length: 1415 ft Main Span Length: 89 ft Roadway Width: 40 ft Main Spans: 16 |
1928 By: James McGraw Company of Philadelphia, Pennsylvania and Modjeski and Masters | Designed by Modjeski and Masters, this concrete arch bridge features a stone facade. | 
| X |
Pennsylvania Turnpike Allegheny River Bridge
|
 | I-76 (Pennsylvania Turnpike) Over Allegheny River | Near Oakmont: Allegheny County, Pennsylvania | Metal Cantilever Rivet-Connected Warren Deck Truss, Fixed and Approach Spans: Metal Deck Girder, Fixed |
Total Length: 2186 ft Main Span Length: 534 ft Roadway Width: 61 ft Main Spans: 5 |
1951 By: Unknown and Modjeski and Masters | This large and early expressway structure was demolished and replaced. | 
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