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Massachusetts

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North Adams

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Blackinton Bridge, Spanning Hoosic River on Galvin Road, North Adams, Berkshire County, MA



See 68 maps of this location


B&W Photos

HB558969
Elevation Of North Portal, Looking South

HB558970
Closer Elevation Of North Portal, Looking South

HB558971
General View Of Span From River Bank, Looking Northeast

HB558972
General View From Deck, Looking North

HB558973
Detail Of Southeast Endpost And Upper Chord Connection

HB558974
Detail Of Bearing Shoe At Southeast Endpost

HB558975
Detail Of Southwest Endpost And Builder's Plate

HB558976
Detail Of Web Configuration Of West Truss From Deck

HB558977
Detail Of Lower Chord Connections From Below, Looking Northeast

HB558978
Veiw Of Floor System From Below Deck, Looking North


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Hoosic River on Galvin Road, North Adams, MA

Find maps of North Adams, MA


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER MA-109
Unprocessed field note material exists for this structure (FN-25).
Building/structure dates: 1884 initial construction
Significance: The Blackinton Bridge is an excellent, virtually unaltered example of William O. Douglas's 1885 patent, which he claimed improved upon his earlier (1878) patent for a lenticular truss bridge. The construction date suggests that the Blackinton Bridge may have been one of the first to incorporate the features of Douglas's second patent, including floor-line tension chords and strut braces. The bridge was fabricated and erected by one of New England's most prolific iron bridge builders, the Berlin Iron Bridge Company. Between 1878 and 1895, the company erected well over 600 lenticular trusses in New England and Upstate New York. The Blackinton Bridge is one of approximately fifty lenticular truss bridges to survive nationally, and one of only ten known surviving lenticular truss bridges in Massachusetts (eight of which are under Massachusetts Department of Public Works purview).

Subjects
Vehicular Bridges


Related Names
Berlin Iron Bridge Company


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. Elevation of north portal, looking south
2. Closer elevation of north portal, looking south
3. General view of span from river bank, looking northeast
4. General view from deck, looking north
5. Detail of southeast endpost and upper chord connection
6. Detail of bearing shoe at southeast endpost
7. Detail of southwest endpost and builder's plate
8. Detail of web configuration of west truss from deck
9. Detail of lower chord connections from below, looking northeast
10. Veiw of floor system from below deck, looking north


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