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Northern Avenue Swing Bridge, Spanning Fort Point Channel at boundary between Bo, Boston, Suffolk County, MA



B&W Photos

HB551607
Looking Northeast Toward Northern Ave

HB551608
Looking Northwest At Swing Bridge.

HB551609
Swing Bridge At Center Of Span


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Fort Point Channel at boundary between Bo, Boston, MA

Find maps of Boston, MA


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER MA-37
Significance: The Northern Avenue Swing Bridge, built in 1908, is one of only three surviving swing bridges built by the city of Boston in the late 19th and early 20th century. Today, still operated infrequently on its original compressed-air system, it is the only operable bridge in Boston of its type. The bridge is 80 feet in width, encompassing between four sets of pin connected trusses, two sidewalks, two roadways and a center lane reserved for a double-track freight railroad. The swing span is 283 feet in length. The rim bearing swing span is carried by a 40 foot diameter drum, in turn supported by 56 steel wheels running on a track along the rim of the granite island pier.

Subjects
Civil Engineering
Swing Bridges
Bridge Construction


Related Names
Lowe, Jet, Photographer
Stott, Peter, Historian


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. LOOKING NORTHEAST TOWARD NORTHERN AVE. SWING BRIDGE. BOSTON TEA PARTY SHIP AT AHCHOR IN FOREGROUND.
2. LOOKING NORTHWEST AT SWING BRIDGE.
3. SWING BRIDGE AT CENTER OF SPAN. DRUM, ALTHOUGH NOT VISIBLE, IS AT CENTER OF PICTURE.


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