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Long Lake Bridge (Old)

Photos 

Long Lake NY 1907

Old Postcard View

Enlarge

BH Photo #377363

Map 

Facts 

Overview
Lost Suspension bridge over Long Lake on Rt 30
Location
Long Lake, Hamilton County, New York
Status
Replaced by a new bridge
Builders
- Groton Bridge Co. of Groton, New York
- Probably Groton Bridge Co. Per M Quiet
Design
Suspension
Approximate latitude, longitude
+43.97459, -74.42621   (decimal degrees)
43°58'29" N, 74°25'34" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/546022/4869210 (zone/easting/northing)
Inventory number
BH 75425 (Bridgehunter.com ID)

Update Log 

  • March 21, 2017: Updated by Dana and Kay Klein: Added category "Groton Bridge Co."
  • February 27, 2017: New photo from Dana and Kay Klein
  • January 31, 2017: Added by Dana and Kay Klein

Comments 

Long lake Bridge (Old)
Posted March 21, 2017, by Michael Quiet (mquiet [at] gmail [dot] com)

Found a few additional pics in my trawling of the internet. This bridge was a fascinating little bit of engineering!

https://jaystravelog.files.wordpress.com/2015/01/ac-26a-long...

https://jaystravelog.files.wordpress.com/2015/01/ac-26-long-...

We can glean a few additional facts:

-The builders plaque looks to be a Groton Bridge Co. (Fits for the area)

-The truss webbing follows a Baltimore/Pennsylvania configuration

-The upper/lower chord configurations suggests that this is operating more as a cantilever then a straight suspension. Note the inversion in both the upper and lower chords from tension/compression to compression/tension (respectively) when it comes to the suspended span (I love how easy it to see what members to what in pin-connected bridges).

Thoughts on this?