This bridge appears to be a genuine vintage example of a Bailey truss bridge. Making this determination is important, since Bailey trusses continue to be manufactured and used in Canada even today, and modern examples do not have heritage value. Moreover, some of the modern Bailey trusses do not follow the traditional design as outlined and used in military operations (the original purpose of the Bailey truss) and may lack some of the details that allowed for hand-assembly, like transom clamps which were essentially hand-turned c-clamps to attach transoms (floor beams) to the trusses. Older, genuine military-style examples however should be considered to have heritage significance. This example does display essential details of a genuine Bailey truss such as transoms with transom clamps and the distinctive lateral braces (called sway braces in the unique Bailey truss vernacular) with their unusual style of turnbuckle. Support for the theory that this is a vintage Bailey truss are the British steel brands found on the steel including "Appleby Frodingham" and "Lilleshall" accompanied by the "British I-Steel" logo, and what may be a portion of a "Dorman Long Middlesbrough England" found on a transom.
This bridge represents the lightest arrangement of a Bailey truss: single story, single truss. As this bridge serves non-motorized traffic only, this arrangement is likely all that was needed.
The actual date at which this bridge was manufactured remains a mystery as does the date when the bridge was installed here at Strathroy.
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