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Power Canal Bridge

Photos 

Power Canal Bridge

Southern portal

Photo taken by Michael Quiet in June 2015

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BH Photo #329798

Map 

Street View 

Description 

This is a highly unusual truss bridge over the Tuner Falls Power Canal, which is seemingly fitting as this power canal is also home to several unique pedestrian truss bridges as well as the triple barreled 11th street bridge. At first glance one might think that the central pier on this bridge has failed as this bridge is not 'straight', so to speak. The northern span is level between abutment and pier, however the southern span has a significantly higher abutment, and thus slops downward to the pier, creating a unusual and unique appearance.

Also of note is the high, but not complete, use of bolted connections for this bridge. Rivets are still used in parts of the superstructure, such as the connections for the built up members, however the gusset plates and many parts of the upper chord employ bolts, which represents an unusual mixture. Whether this was the way the structure was built or if the original riveted connections were replaced during a rehabilitation are unknown.

And another interesting note would be the end post in the Northwest quadrant. It has an additional joint with bracing (indicating that it was indeed part of the original plan and not a later modification). As to why such an unusual design choice was made though would be mere speculation.

Facts 

Overview
Warren pony truss bridge over Power Canal on Pedestrian Pathway
Location
Turners Falls, Franklin County, Massachusetts
Status
Open to pedestrians/emergency vehicles only
Design
Warren pony truss with alternating verticals
Approximate latitude, longitude
+42.61065, -72.55486   (decimal degrees)
42°36'38" N, 72°33'17" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/700558/4720478 (zone/easting/northing)
Quadrangle map:
Greenfield
Inventory number
BH 58859 (Bridgehunter.com ID)

Update Log 

  • November 21, 2015: Updated by Chester Gehman: Corrected through truss to pony truss.
  • June 18, 2015: New photos from Michael Quiet
  • November 23, 2013: Added by Luke Harden

Sources 

  • Luke
  • Historicbridges.org - by Nathan Holth
  • Michael Quiet - mquiet [at] gmail [dot] com
  • Chester Gehman - gehmanc2000 [at] yahoo [dot] com