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County Farm Bridge

Photos 

File:WiltonNH CountyFarmBridge 01.jpg

Wikimedia user MagicPiano

License: Creative Commons Attribution-Share-Alike (CC BY-SA)

View this photo at commons.m.wikimedia.org

BH Photo #309031

Map 

Description 

The bridge has two main components. The actual bridge section is a semi-circular arch of cut granite situated within a sloping stone causeway constructed of random-sized boulders The arch is incorporated into the causeway approximately 250 feet south of its northern endpoint at the Burton Highway. The contrasting masonry of the two structures merges along an angular interface which slopes sharply upward from the base of the arch. As a result, the actual arch opening is centered within a "V"-shaped section of evenly-coursed stonework overlain by a narrow band of irregular boulders.

Regarding dimensions, the stone arch has a 17'11" span and a through measurement of 28'2". The semi-circular opening is outlined by 18" thick voussoirs which begin at a spring line 7'2" above the water's surface and rise to a central keystone at the apex, 15'10" above the water. The crown section measures 6'8", carrying the roadway a total height of 22'6" over the brook. (NRHP Form)

Facts 

Overview
Stone arch bridge over Whiting Brook on Old County Farm Road
Location
Hillsborough County, New Hampshire
Status
Open to traffic
History
Built 1885 by the Ward Brothers
Builder
- Ward Brothers
Design
Stone arch
Dimensions
Length of largest span: 17.1 ft.
Recognition
Posted to the National Register of Historic Places on May 14, 1981
Approximate latitude, longitude
+42.85749, -71.81733   (decimal degrees)
42°51'27" N, 71°49'02" W   (degrees°minutes'seconds")
Approximate UTM coordinates
19/269827/4748840 (zone/easting/northing)
Quadrangle map:
Greenville
Inventory numbers
NRHP 81000070 (National Register of Historic Places reference number)
BH 50636 (Bridgehunter.com ID)

Categories 

19th Century (6,182)
Arch (11,194)
Built 1885 (149)
Built during 1880s (1,645)
Deck arch (10,433)
Hillsborough County, New Hampshire (90)
NR-listed (2,844)
New Hampshire (565)
Open (36,585)
Owned by county (18,855)
Span length under 25 feet (5,768)
Stone arch (2,649)
Ward Brothers (1)

Update Log 

  • November 26, 2014: Photo imported by Dave King
  • December 19, 2011: Added by J.P.

Sources