Sidney Street Bridge
Photo taken by Douglas Butler in December 2015
View this photo on Flickr
BH Photo #344046
The web page states that Keller & Harrington was one of the builders. That is not possible since the firm was not founded unti the 1920s, after Keller was terminated from the Scherzer Rolling Lift Bridge Company.
Also, the Sidney Street Bridge is listed in the Scherzer Rolling Lift Bridge Company 1916 promotional book as one of its bridges.