| 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 |
Ausable Road Bridge
|
 | Ausable Road Over Ausable River | Rural: Middlesex County, Ontario | Metal 4 Panel Rivet-Connected Warren Pony Truss, Fixed | Main Spans: 1 | 1900 By: Hamilton Bridge Company of Hamilton, Ontario | A lightweight pony truss bridge built by the Hamilton Bridge Works in the first decade of the 20th century. | 
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Barklay Boulevard Bridge
|
 | Barklay Boulevard Over Sydenham River | Rural: Middlesex County, Ontario | Metal 4 Panel Rivet-Connected Warren Pony Truss, Fixed | Main Spans: 1 | By: Unknown | An abandoned former trunkline pony truss bridge with poor deck condition. | 
|
Blackfriars Street Bridge
|
 | Blackfriars Street Over North Branch Thames River | London: Middlesex County, Ontario | Metal 16 Panel Bowstring Through Truss, Fixed |
Total Length: 225 ft Main Span Length: 225 ft Main Spans: 1 |
1875 By: Wrought Iron Bridge Company of Canton, Ohio | Among the rarest and oldest bridges in Canada is this breathtaking iron bowstring truss which is the longest span of its kind remaining in all of North America! | 
|
Corner Drive Bridge
|
| Corner Drive Over Ausable River | Rural: Middlesex County, Ontario | Metal 7 Panel Rivet-Connected Pratt Through Truss, Fixed | Main Spans: 1 | By: Unknown | This classic riveted truss bridge looks nice in its coat of white paint. | 
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CP Railroad Private Overpass
|
 | Private Drive Over Railroad (Canadian Pacific) | London: Middlesex County, Ontario | Wood Stringer (Multi-Beam), Fixed | Main Spans: 5 | By: Unknown | An unaltered example of a wooden railroad grade separation. | 
|
CR-74 Bridge
|
 | CR-74 Over KH-401 | Rural: Middlesex County, Ontario | Concrete Rigid-Frame, Fixed | Main Spans: 1 | 1956 By: Unknown | One of a number of remaining attractive overpasses with good historic integrity. | 
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Dorchester Bridge
|
 | Bridge Street Over South Branch Thames River | Dorchester: Middlesex County, Ontario | Metal 6 Panel Rivet-Connected Warren Deck Truss, Fixed | Main Spans: 1 | 1923 By: Unknown | This bridge is an uncommon example of a highway deck truss in Ontario. | 
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Dorchester Road Bridge
|
| Dorchester Road Over KH-401 | Rural: Middlesex County, Ontario | Concrete Rigid-Frame, Fixed | Main Spans: 1 | 1955 By: Unknown | One of a number of remaining similar structures, this bridge is both old and unusual as an attractive expressway overpass. | 
|
Elgin Road Bridge
|
| Elgin Road (KH-73) Over KH-401 | Rural: Middlesex County, Ontario | Concrete Rigid-Frame, Fixed | Main Spans: 1 | 1957 By: Unknown | One of a number of remaining similar structures, this bridge is both old and unusual as an attractive expressway overpass. | 
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Franks Lane Bridge
|
 | Franks Lane Over Railroad (Canadian National) | London: Middlesex County, Ontario | Wood 2 Panel Kingpost Pony Truss, Fixed and Approach Spans: Wood Stringer (Multi-Beam), Fixed | Main Spans: 1 | By: Unknown | This unusual wooden bridge is a rare example of a kingpost pony truss. | 
|
Glanworth Drive Bridge
|
 | Glanworth Drive Over KH-401 | Tempo (Rural): Middlesex County, Ontario | Concrete Rigid-Frame, Fixed | Main Spans: 1 | By: Unknown | This beautiful vintage overpass stands out among the few surviving bridges of this type because of its skew. | 
|
Kensington Bridge
Dundas Street Bridge |
| Dundas Street Over South Branch Thames River | London: Middlesex County, Ontario | Metal 7 Panel Rivet-Connected Modified Warren Pony Truss, Fixed |
Total Length: 313 ft Main Spans: 3 |
1930 By: Hamilton Bridge Company of Hamilton, Ontario | A beautiful three span example of a London pony truss with unusual truss configuration. | 
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Kerwood Road Bridge
|
 | Kerwood Road Over Au Sable River | Rural: Middlesex County, Ontario | Metal Deck Girder, Fixed | Main Spans: 3 | 1964 By: Unknown | A large cantilevered deck plate girder built in the 1960s. | 
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King Street Bridge
|
 | King Street Over South Branch Thames River | London: Middlesex County, Ontario | Metal 9 Panel Pin-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed |
Total Length: 213 ft Main Spans: 1 |
1897 By: Central Bridge and Engineering Company of Peterborough, Ontario | A rare example of a pin connected through truss in Ontario; carries a storm sewer underneath. | 
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London North Branch Railroad Bridge
|
| Railroad (Canadian Pacific) Over North Branch Thames River | London: Middlesex County, Ontario | Metal 12 Panel Rivet-Connected Pratt Through Truss, Fixed | Main Spans: 1 | By: Unknown | Multiple spans, multiple configurations, and one skewed span, make this a bridge both large and fun to explore. | 
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London South Branch Railroad Bridge
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| Railroad (Canadian National) Over South Branch Thames River | London: Middlesex County, Ontario | Metal 7 Panel Pin-Connected Pratt Railing Height Truss, Fixed | Main Spans: 1 | 1899 By: Unknown | This bridge is mostly a deck truss - but part of the trusses stick up above the deck making it a bit like a pony also. | 
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London Thames River Railroad Bridge
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| Railroad (Canadian National) Over Thames River | London: Middlesex County, Ontario | Metal 8 Panel Rivet-Connected Warren Deck Truss, Fixed | Main Spans: 2 | By: Unknown | Setting new standards for massive, this bridge has gargantuan members and connections. | 
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McAdam Road Bridge
|
| McAdam Road Over Ausable River | Rural: Middlesex County, Ontario | Metal 8 Panel Rivet-Connected Double-Intersection Warren Through Truss, Fixed | Main Spans: 1 | By: Unknown | This breathtaking bridge, tucked away in old Lake Huron dunes displays a rare truss configuration. | 
| ! |
Meadowlily Road Bridge
|
 | Meadowlily Road Over South Branch Thames River | London: Middlesex County, Ontario | Metal 10 Panel Rivet-Connected Double-Intersection Warren Through Truss, Fixed and Approach Spans: Metal Rivet-Connected Warren Pony Truss, Fixed |
Total Length: 285 ft Roadway Width: 18 ft Main Spans: 1 |
1910 By: Hamilton Bridge Company of Hamilton, Ontario | London's most secluded truss bridge, this bridge is in poor condition, but is a beautiful structure. | 
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Mooresville Drive Bridge
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| Mooresville Drive Over Ausable River | Rural: Middlesex County, Ontario | Metal 6 Panel Rivet-Connected Pratt Through Truss, Fixed | Main Spans: 1 | By: Unknown | This bridge has a few unusual details for a bridge of its type. | 
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Napier Road Bridge
|
| Napier Road Over Sydenham River | Rural: Middlesex County, Ontario | Metal 6 Panel Rivet-Connected Warren Pony Truss, Fixed | Main Spans: 1 | By: Unknown | This attractive pony truss is a pleasant suprise for anyone who decides to explore this road. | 
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New Ontario Road Bridge
|
| New Ontario Road Over Ausable River | Rural: Middlesex County, Ontario | Metal 7 Panel Rivet-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed | Main Spans: 1 | By: Unknown | This bridge could use some paint but is otherwise an attractive truss bridge. | 
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Richmond Street Bridge
|
| Westbound Richmond Street Over North Branch Thames River | London: Middlesex County, Ontario | Metal 10 Panel Rivet-Connected Parker Through Truss, Fixed |
Total Length: 200 ft Main Span Length: 192 ft Main Spans: 1 |
1922 By: Unknown | This attractive bridge continues to serve traffic as part of a one-way couplet of bridges. | 
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River Road Bridge
|
| River Road Over Ausable River Cut | Rural: Middlesex County, Ontario | Metal 7 Panel Rivet-Connected Pratt Through Truss, Fixed | Main Spans: 1 | By: Unknown | A beautiful Pratt through truss sits abandoned on old River Road alignment. | 
| S |
Sarnia Road Bridge
|
| Sarnia Road Over Railroad (Canadian Pacific) | London: Middlesex County, Ontario | Metal 5 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 90 ft Main Span Length: 90 ft Main Spans: 1 |
1890 By: Unknown | This short through truss bridge is a rare example of its kind and has historically and technologically significant details. | 
|
Strathroy Bridge
Albert Street Bridge |
| Albert Street (CR-39) Over Sydenham River | Rural: Middlesex County, Ontario | Metal 6 Panel Rivet-Connected Polygonal Warren Pony Truss, Fixed | Main Spans: 1 | By: Unknown | An attractive warren pony truss that retains original lattice guardrails. | 
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Thames Street Railroad Overpass
|
| Railroad (Canadian National) Over Thames Street | London: Middlesex County, Ontario | Stone Semicircular Deck Arch, Fixed | Main Spans: 1 | 1889 By: Unknown | This is a nice stone arch bridge, that is among the oldest of London's bridges. | 
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University Drive Bridge
|
| University Drive Over North Branch Thames River | London: Middlesex County, Ontario | Metal Cantilever Deck Girder, Fixed and Approach Spans: Metal Simple Span Deck Girder, Fixed | Main Spans: 1 | By: Unknown | This unusual bridge is a concrete encased deck plate girder and the center span appears to include a suspended span. | 
|
Victoria Bridge
Ridout Street Bridge |
| Ridout Street Over South Branch Thames River | London: Middlesex County, Ontario | Metal 7 Panel Rivet-Connected Modified Warren Pony Truss, Fixed |
Total Length: 258 ft Main Spans: 2 |
1926 By: Hamilton Bridge Company of Hamilton, Ontario | An attractive two-span pony truss with a visible skew. | 
| X |
Wellington Road Bridge
|
 | Wellington Road Over KH-401 | London: Middlesex County, Ontario | Concrete Rigid-Frame, Fixed | Main Spans: 1 | 1956 By: Unknown | A rare example of its design, the Ministry of Culture recognized this bridge as historic. | 
| ! |
Westminster Drive Bridge
|
| Westminster Drive Over KH-401 | London: Middlesex County, Ontario | Concrete Rigid-Frame, Fixed | Main Spans: 1 | 1959 By: Unknown | An extremely unusual variation in Ontario's rigid-frame designs. | 
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