This bridge is one of two similar bridges on this stretch of the Slocan River. The other bridge is on Passmore Upper Road. Both bridges are similar in design details and composition to the Old Trail Bridge, suggesting that all three bridges were designed to some sort of standard bridge design, perhaps designated by the province. The construction date for the Slocan River Bridges is unknown but they likely date to around the same time as Old Trail Bridge was was built in 1911.
The two Slocan River Bridges however also share even more details that go beyond the shared details of a standardized provincial truss design. The two bridges share a few very unusual details that suggest that these two spans may have been relocated here from a different original location, and that these single span trusses may have both been part of a single multi-span truss bridge in this unknown former location. The first unusual detail is the steel brands found on the bridge. On the verticals, which include pairs of angles, some of the angles have Lanarkshire Scotland steel brands, while others have Carnegie brands. While it is not uncommon for bridges to have multiple steel brands, it is somewhat unusual for two bridges to have the exact same two brands on the exact same elements... and it is also unusual for multiple brands to appear on the same types of rolled elements. More commonly, different brands would be found on different rolled elements (plate, angle, channel, etc). That both bridges have the exact same brands in the exact same spot suggest that both spans were built by the same company at the same time. The next element that both bridges share is that a number of the rivets on the bridges have been replaced with bolts. Replacement of rivets with bolts commonly occurs in response to deterioration and failure of rivets. However, the bolts on these bridges appear only in specific locations, such as where the portal bracing attaches to the end post, and on one side only of selected gusset plates at some of the connections. In short, the bolts seem to occur in places on the bridge where a contractor looking to dismantle the bridge for relocation would seek to remove rivets to separate the truss into shippable parts. In other words, the places where rivets are replaced with bolts suggest that these trusses were dismantled for relocation at some time in their history. Finally, the substructure and approach spans for these bridges are clearly much newer than the trusses. All of these observations combined suggest (but sadly do not prove) that these two bridges are spans that were relocated from a single multi-span truss bridge in some other location.
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