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Patterson Hill Road Bridge

Patterson Hill Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: June 15, 2012

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Key Facts

Facility Carried / Feature Intersected
Patterson Hill Road Over Contoocook River
Location
Rural: Merrimack County, New Hampshire: United States
Construction Date and Builder / Engineer
1915 By Builder/Contractor: Groton Bridge Company of Groton, New York and Engineer/Design: Storrs and Storrs of Concord, New Hampshire

Technical Facts

Rehabilitation Date
2001
Main Span Length
113 Feet (34 Meters)
Structure Length
119 Feet (36 Meters)
Roadway Width
13.5 Feet (4.11 Meters)
Spans
1 Main Span(s)
NBI Number
12000970010100

Historic Significance Rating (HSR)

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

View Historical Articles About John Williams Storrs and His Firm Storrs and Storrs

This bridge is an attractive, traditionally composed example of an early 20th Century through truss. It was designed by the firm of Storrs and Storrs, which was based out of Concord, New Hampshire and apparently was a well-known firm for bridge work in New England. The senior member of this firm, John Williams Storrs, was also noteworthy as the first state highway engineer for New Hampshire. Groton Bridge Company, also a well-known bridge builder that was prolific in the northeastern United States, constructed the bridge.

This bridge was rehabilitated in 2001 and it remains in excellent condition today. There was some alteration during rehabilitation, most noteworthy the replacement of the bottom chord and the replacement of the floor beams. The bottom chord was replaced in kind, however bolts were used instead of rivets, as apparently was the case elsewhere on the bridge where rivets were removed.

This bridge is noted for being in close proximity to another historic truss bridge built around 15 years later, the Western Avenue Bridge. The Western Avenue Bridge appears to have been built to carry US-202, as an improved alignment for traffic heading southbound/northbound in this area. It eliminates a 90 degree turn that would be needed if using Patterson Hill Road Bridge. As such, this likely reduced the traffic on Patterson Hill Road Bridge, making it more of a local traffic bridge.

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Photo Galleries and Videos: Patterson Hill Road Bridge

 
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Maps and Links: Patterson Hill Road Bridge

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