New Henniker Bridge

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New Henniker Bridge
New Bridge

Historical American Buildings Survey L. C. Durette, Photographer May 15, 1936. VIEW LOOKING NORTH WEST - Covered Bridge, Spanning Contoocook River, Hopkinton, Merrimack County, NH HABS NH,7-HOP.V,2-1.tif

View looking north west - Covered Bridge, Spanning Contoocook River, Hopkinton, NH
Coordinates 43°10′54″N71°45′07″W / 43.181700°N 71.751880°W / 43.181700; -71.751880 Coordinates: 43°10′54″N71°45′07″W / 43.181700°N 71.751880°W / 43.181700; -71.751880
Crosses Contoocook River
Named for New road to Henniker, New Hampshire
Owner Town of Hopkinton
Historic American Buildings Survey HABS NH-30
Website https://www.loc.gov/pictures/item/nh0143/
Preceded by Stone arch bridge washed away in 1852
Followed by Steel truss bridge just north of it which is no longer in existence
Characteristics
Design Briggs Truss
Material Stone piers
Trough construction Wood lattice and arch
Total length 180 ft.
Width 20 ft.
Height 22 ft.
No. of spans 1
History
Constructed by John C. Briggs
Construction start 1863
Construction cost $2,500
Rebuilt 1935
Closed 1936

New Henniker Bridge or New Bridge was a covered bridge in West Hopkinton, New Hampshire, which carried Henniker Road over the Contoocook River. The truss bridge was completed in 1863, and was the second bridge on the site. The original stone arch bridge was built in 1845 and was washed away by flood in 1852. The bridge was just over 20 feet (6.1 m) wide and 180 feet (55 m) long, and consisted of a single span supported by two triple lattice trusses resting on granite abutments. The patent drawings show an all-timber truss with fixed intersection angles in the center of the span. At the ends of the span the angles of the diagonals vary. The end post is vertical, and each brace further from it is sloped a little more. [1] [2]

Covered bridge wooden bridge with protective cover

A covered bridge is a timber-truss bridge with a roof, decking, and siding, which in most covered bridges, create an almost complete enclosure. The purpose of the covering is to protect the wooden structural members from the weather. Uncovered wooden bridges typically have a lifespan of only 20 years because of the effects of rain and sun, but a covered bridge could last 100 years.

West Hopkinton, New Hampshire Populated place in New Hampshire, United States

West Hopkinton is a populated place within the town of Hopkinton in Merrimack County, New Hampshire, United States. West Hopkinton is well known for its agricultural center, preservation of historical landmarks and recreational activities within the village.

Contoocook River river in the United States of America

The Contoocook River is a 71-mile-long (114 km) river in New Hampshire. It flows from Pool Pond and Contoocook Lake on the Jaffrey/Rindge border to Penacook, where it empties into the Merrimack River. It is one of only a few rivers in New Hampshire that flow in a predominantly northward direction. Three covered bridges span the river, one in the village of Contoocook in the town of Hopkinton, one in the town of Henniker, and a third on the Hancock-Greenfield line. Residents and tourists have made the Contoocook popular for fishing and whitewater boating.

In 1935 the bridge had sustained damage during a flood and was repaired. The bridge was utilized until 1936 when a steel truss bridge was built adjoining it to the north and ready for traffic. The covered bridge was then destroyed. [3]

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References

  1. ↑ "Henniker Road Covered Bridge 29-07-62x". Dave King, Will Truax. 9 April 2014. Retrieved 16 December 2015.
  2. ↑ "Henniker Road, Merrimack County" . Retrieved 16 December 2015.
  3. ↑ "HABS NH-30" (PDF). Eugene W. Clark. Historic American Buildings Survey. December 1937. Retrieved 16 December 2015.
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