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Bardwell's Ferry Bridge

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Coordinates: 42°33′20″N 72°40′41″W / 42.55556°N 72.67806°W / 42.55556; -72.67806
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Bardwell's Ferry Bridge
Historic Bardwell's Ferry Bridge over the Deerfield River
Coordinates42°33′20″N 72°40′41″W / 42.55556°N 72.67806°W / 42.55556; -72.67806
CarriesBardwell's Ferry Road
CrossesDeerfield River
LocaleConway, Massachusetts
Characteristics
DesignTruss bridge
Total length198 ft (60 m)
Width14 ft (4.3 m)
History
DesignerDouglas, William O.; Berlin Iron Bridge Co.
Construction end1880
Bardwell's Ferry Bridge
Nearest cityConway, Massachusetts
Built1882
ArchitectWilliam O. Douglas, Berlin Iron Bridge Co.
NRHP reference No.00000076[1]
Added to NRHPFebruary 10, 2000
Location
Map

The Bardwell's Ferry Bridge, built in 1882, is an historic lenticular truss bridge spanning the Deerfield River between the towns of Shelburne and Conway in Franklin County, Massachusetts. The bridge is listed on the National Register of Historic Places.

Description

View from road, at bridge's west end

The Bardwell's Ferry Bridge carries Bardwell's Ferry Road across the Deerfield River. The bridge is situated within a deep valley, with sharply sloping roadways on each side.

Built by the Berlin Iron Bridge Co. of East Berlin, Connecticut, the bridge is 198 feet (60 m) long, consisting of 13 panels. It is the longest single span lenticular bridge in Massachusetts.[2]

The end posts and upper chords are built-up open box members, consisting riveted plates and angles giving dimensions of 18 by 12 inches (46 cm × 30 cm). The lower chords are constructed from 1-by-3-inch (3 cm × 8 cm) eye bars. The bridge deck is 14 feet (4.3 m) wide and is constructed of wooden planks.

During the latter part of the 19th century, the Berlin Iron Bridge Co. manufactured and erected almost 800 lenticular truss bridges in the United States (Darnell 1979). While most of these bridges were built in New England, a few were constructed in Ohio and Texas. These bridges are sometimes referred to as "pumpkin-seed bridges", "cats-eyes bridges", "elliptical truss bridges", or "parabolic truss bridges" because of their unique lens shape. Lenticular bridges were only used for vehicular traffic and were generally considered too light to be used for railroad and trolley loads.[3]

Full view of bridge from the north in 2014

The Bardwell's Ferry Bridge was restored in the 1990s, and added to the National Register of Historic Places in 2000.[1]

References

  1. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. April 15, 2008.
  2. ^ Lutenegger, Alan J. (2008). "Extant Lenticular Iron Truss Bridges from the Berlin Iron Bridge Company". In Hojjat Adeli (Ed.), Historic Bridges: Evaluation, Preservation, and Management, pp. 133-35. Taylor & Francis Group.
  3. ^ Lenticular truss bridges of Massachusetts Archived 2008-05-26 at the Wayback Machine Department of Civil & Environmental Engineering University of Massachusetts, Amherst, MA
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