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New Hampshire

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Canaan

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U.S. Route 4 Bridge, Spanning Mascoma River, Canaan, Grafton County, NH



B&W Photos

HB784729

HB784730

HB784731

HB784732

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HB784737

HB784738

HB784739

HB784740

HB784741


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Mascoma River, Canaan, NH

Find maps of Canaan, NH


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER NH-19
Significance: The bridge, designed by the State Highway Department, is on of approximately 15 single span high Pratt truss bridges extant in New Hampshire. A late example of a Pratt truss, the bridge is significant for its length, its 90 degree angle of crossing, and its former steel open grid walkways (now filled and paved). The bridge was constructed in 1940 during the realignment and straightening of Route 4, the state's principal east-west trunk line between Concord and the Connecticut River Valley.

Subjects
Pedestrian Bridges
Steel Truss Bridges
Vehicular Bridges


Collection
Historic American Engineering Record (Library of Congress)

Contents


Back to Canaan, New Hampshire