Hudson Bridge, North Street and Machar Street over Gananoque River, Gananoque, ON
Excerpt from historicbridges.org/bridges/browser/?bridgebrowser=ontari...:
This bridge is a rare example of a pin-connected truss bridge in Ontario. This once common bridge type is rare thanks to demolition and replacement of these bridges, despite their heritage value as some of the oldest metal bridges in Ontario. This bridge is particularly special as it appears to have a rich history. The bridge was apparently originally a railway bridge and may have been relocated to its current location before being converted for vehicular use. The bridge is labeled as the "T. I. R. R." Bridge which may mean "Thousand Islands Rail Road" This is evidence that the bridge was originally a railway bridge, and this theory is also further supported by the bridge's unusually large floor beams and narrow roadway width.
The bridge's trusses appear to retain good historic integrity with no major alterations noted. The heavy floor beams are connected to the truss via an uncommon pin connection to the vertical member, these connections being separate from the bottom chord connections. This design is in contrast to the traditional system of u-bolt hangers that would have extended down from the bottom chord connections to hold the floor beam. The unusual, perhaps more rigid and heavy duty, method of holding the floor beams may be yet more evidence of this bridge's railway past.
Hudson Bridge, North Street and Machar Street over Gananoque River, Gananoque, ON
Excerpt from historicbridges.org/bridges/browser/?bridgebrowser=ontari...:
This bridge is a rare example of a pin-connected truss bridge in Ontario. This once common bridge type is rare thanks to demolition and replacement of these bridges, despite their heritage value as some of the oldest metal bridges in Ontario. This bridge is particularly special as it appears to have a rich history. The bridge was apparently originally a railway bridge and may have been relocated to its current location before being converted for vehicular use. The bridge is labeled as the "T. I. R. R." Bridge which may mean "Thousand Islands Rail Road" This is evidence that the bridge was originally a railway bridge, and this theory is also further supported by the bridge's unusually large floor beams and narrow roadway width.
The bridge's trusses appear to retain good historic integrity with no major alterations noted. The heavy floor beams are connected to the truss via an uncommon pin connection to the vertical member, these connections being separate from the bottom chord connections. This design is in contrast to the traditional system of u-bolt hangers that would have extended down from the bottom chord connections to hold the floor beam. The unusual, perhaps more rigid and heavy duty, method of holding the floor beams may be yet more evidence of this bridge's railway past.