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Dundas Street Bridge

Dundas Street Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: June 20, 2013

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Key Facts

Facility Carried / Feature Intersected
Dundas Street Over Don River, Don Valley Parkway, and Railroad
Location
Toronto: Toronto City, Ontario: Canada
Structure Type
Metal Three-Hinged Solid Ribbed Deck Arch, Fixed and Approach Spans: Metal Deck Girder, Fixed
Construction Date and Builder / Engineer
1911 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
142 Feet (43.28 Meters)
Structure Length
396 Feet (120.7 Meters)
Roadway Width
Not Available
Spans
1 Main Span(s) and 3 Approach Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

This bridge as originally designed, consisted, from west to east, of two deck plate girder spans, a deck arch span over the Don River, and finally two more deck plate girder spans. Today, the bridge has been altered from this design. The two eastern deck plate girder approach spans have been demolished and replaced with a single span steel stringer bridge, a change that was likely made to accommodate the Don Valley Parkway which now passes under this part of the bridge. The bridge has also been widened from its original design. An additional steel stringer added to both sides of the bridge alongside the remaining original spans supports a wider deck on top, which is also not original. Original ornamental railings have been lost from the original bridge as well. Despite these alterations, the bridge remains noteworthy for its steel deck arch span. Although Toronto has several examples of this structure type, steel deck arch bridges are rare elsewhere in Ontario. The previous bridge at this location was a four span Warren (no verticals) pony truss.

Above: Views of the previous bridge at this location.

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