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Bridgeport Covered Bridge

Nevada County, California
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Photos 

Oblique view

Photo taken by Larry Matthews

Map 

Street View 

Facts 

Overview
Covered bridge over South Fork Yuba River on Pleasant Valley Road in South Yuba State Park
Location
Nevada County, California
Status
Closed to all traffic as of October 21, 2011
Future prospects
The bridge is pending a $20,000.00 engineering study. It is closed to all traffic until the study and necessary repairs are made. Twisting and shifting of the bridge has been found. "This bridge will turn 150 years old in April 2012."
History
Built 1862 by the Virginia Turnpike Co.; closed to traffic in 1973
Builder
- Virginia Turnpike Co.
Design
Howe through truss with auxilliary arch
Dimensions
Length of largest span: 208.0 ft.
Total length: 229.0 ft.
Deck width: 15.5 ft.
Recognition
Posted to the National Register of Historic Places on July 14, 1971
Approximate latitude, longitude
+39.29274, -121.19491   (decimal degrees)
39°17'34" N, 121°11'42" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/655665/4350816 (zone/easting/northing)
USGS topographic map
French Corral
Inventory numbers
WGCB 05-29-01 (World Guide to Covered Bridges number)
NRHP 71000168 (National Register of Historic Places reference number)
BH 11220 (Bridgehunter.com ID)

Categories 

19th Century (3,822)
Built 1862 (12)
Built during 1860s (217)
California (1,622)
Closed (2,071)
Covered (925)
HAER documented (782)
Have street view (9,894)
Historic Civil Engineering Landmark (41)
Howe through truss (203)
Howe truss (249)
 NR-listed (2,354)
Nevada County, California (19)
Owned by state (9,808)
Preserved (652)
Span length 175-250 feet (1,484)
Through truss (9,209)
Total length 175-250 feet (2,789)
Truss (23,573)
Virginia Turnpike Co. (1)
Yuba River (12)

Update Log 

  • March 21, 2010: New photos from Craig Philpott
  • March 16, 2010: Updated by Craig Philpott: Added street view
  • February 27, 2010: New photos from Robert Stephenson
  • July 31, 2009: New photo from Craig Philpott
  • March 19, 2009: Updated by C Hanchey
  • November 23, 2008: New photos from James Baughn
  • October 16, 2006: Posted photos from Larry Matthews

Sources 

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Comments 

Bridgeport Covered Bridge
Posted April 28, 2012, by Will Truax (Bridgewright [at] ymail [dot] com)

Though sadly the Portals are gated through this weekends Sesquicentennial celebration, plans for a rehabilitation were announced yesterday - http://t.co/C8kQA78y

A very thorough piece on the bridges history was also recently published - http://t.co/f20LYQV5

As an aside - I'm not sure it is accurate to describe this bridge as a "Howe with auxiliary arches" To my mind auxilliary evokes arches of the lam variety, added to a through truss to increase capcity. These arches are original to the bridges construction. Though these are an applied variant, and not an encased arch, Arches were a feature Howe included in his '46 patent -

http://www.google.com/patents?id=qhVDAAAAEBAJ&pg=PA1&dq=4726&source=gbs_selected_pages&cad=1#v=onepage&q&f=false