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Chateaugay vicinity

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Powerscourt Bridge, Spanning Chateauguay River, First Concession Road,, Chateaugay, Franklin County, NY



B&W Photos

HB941210
Note Steel Floor Beams.

HB941211
Note Double Intersection Of Diagonal Tension Member.

HB941212

HB941213

HB941214

HB941215

HB941216

HB941217

HB941218

HB941219

HB941220

HB941221

HB941222


Data Pages


Drawings


Photo Caption Pages


Item Title


Location
First Concession Road, Chateaugay vicinity, NY

Find maps of Chateaugay, NY


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER NY-332
Building/structure dates: 1861 initial construction
Significance: The Powerscourt Bridge is one of the oldest covered bridges in Canada and the only surviving type of a McCallum type truss in the world. Patented in 1851 and 1857, the McCallum truss was used on North American railways until about 1870, when prefabricated iron trusses came into widespread use.

Subjects
Covered Bridges
Transportation


Related Names
Graham, Robert
McCallum, Daniel Craig


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
PERSPECTIVE, LOOKING NW.
BELLYSHOT FROM EASTERN ABUTMENT. NOTE STEEL FLOOR BEAMS.
ELEVATION FROM NORTH.
EASTERN SPAN.
EAST PORTAL.
PERSPECTIVE, EASTERN END OF PORTAL AND TRUSS.
WEST END OF EAST SPAN, SOUTH PANEL. NOTE DOUBLE INTERSECTION OF DIAGONAL TENSION MEMBER.
PERSPECTIVE OF WEST SPAN.
INTERIOR WEST PORTAL, LOOKING WEST.
PERSPECTIVE VIEW OF PORTAL AND SOUTH FACE FROM WEST BANK.
WESTERN PORTAL AND ROADWAY.
PERSPECTIVE FROM NW FROM WEST BANK.
BELOW DECK VIEW, WEST BANK.


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