| 词条 | Bridgeport Covered Bridge |
| 释义 |
|bridge_name = Bridgeport Covered Bridge |image = Historic Covered Bridge in Bridgeport, CA at South Yuba River State Park.JPG |caption = View of the Bridgeport Covered Bridge |official_name = |carries = Pedestrian |crosses = South Yuba River |locale = Nevada County, California |map_type=California |coordinates = {{coord|39|17|33.86|N|121|11|41.66|W|display=inline,title}} |maint = |id = |designer = David Ingefield Wood[1] |design = Howe truss with auxiliary arch covered bridge[1] |mainspan = {{convert|208|ft}}[3] |length = {{convert|233|ft}}[1] |width = |height = |load = 13 Tons (Current estimate at 3 tons due to age of timbers) |clearance = |below = |traffic = |begin = |complete = |open = 1862[1] |extra={{Infobox NRHP |embed = yes |name = Bridgeport Covered Bridge |nrhp_type = |image = |caption = |nearest_city= French Corral, CA |area = |built = 1862[2] |architecture = Howe Truss with an auxiliary Burr Arch Truss[2] |added = July 14, 1971[3] |governing_body = Local |designated_other1 = California |designated_other1_number = 390[4] |refnum=71000168 }} }} The Bridgeport Covered Bridge is located in Bridgeport, Nevada County, California, southwest of French Corral and north of Lake Wildwood. It is used as a pedestrian crossing over the South Yuba River. The bridge was built in 1862 by David John Wood. Its lumber came from Plum Valley in Sierra County, California.[5] The bridge was closed to vehicular traffic in 1972 and pedestrian traffic in 2011 due to deferred maintenance and "structural problems".[6] On June 20, 2014, California Gov. Jerry Brown signed budget legislation that included $1.3 million for the bridge's restoration. The work is slated to be done in two phases—near-term stabilization followed by restoration. Restoration may not begin until 2018.[7] The Bridgeport Covered Bridge has the longest clear span of any surviving covered bridge in the world.[1][8] Historic landmarkThe bridge was listed in the National Register of Historic Places in 1971,[3] and it is also a California Registered Historical Landmark No. 390.[4] There are four plaques at the site.[9] The State Historical Landmark plaque was placed in 1964. The landmark was rededicated in 2014. The inscription on the current plaque reads:
The bridge was an important link in a freight-hauling route that stretched from the San Francisco Bay to Virginia City, Nevada and points beyond after the discovery of the Comstock Lode in 1859 sparked a mining boom in Nevada. Steamboats carried freight from the San Francisco Bay up the Sacramento River to Marysville, where it was loaded onto wagons for the trip across the Sierra Nevada via the Virginia Turnpike{{dead link|date=July 2017 |bot=InternetArchiveBot |fix-attempted=yes }}, and Henness Pass Road. The route across the bridge was ultimately eclipsed by the completion of the First Transcontinental Railroad as far as Reno in 1868 via Donner Pass, but it continued to serve nearby communities in the foothills until improved roads and bridges on other routes drew away most of the traffic. Longest spanA report by the U.S. Department of the Interior states that the Bridgeport Covered Bridge ({{abbr|HAER|Historic American Engineering Record}} No. CA-41) has clear spans of {{convert|210|ft}} on one side and {{convert|208|ft}} on the other, while Old Blenheim Bridge ({{abbr|HAER|Historic American Engineering Record}} No. NY-331) had a documented clear span of {{convert|210|ft}} in the middle (1936 {{abbr|HABS|Historic American Buildings Survey}} drawings).[11] With the 2011 destruction of the Old Blenheim Bridge, the Bridgeport Covered Bridge is the undisputed longest-span wooden covered bridge still surviving. Historically, the longest single-span covered bridge on record was Pennsylvania's McCall's Ferry Bridge with a claimed clear span of {{convert|360|ft}} (built 1814–15, destroyed by ice jam 1817).[11] See also
External links
References1. ^1 2 3 4 {{cite book |last=Jackson |first=Donald C. |title=Great American Bridges and Dams |publisher=Wiley |year=1988 |pages=268–269 |isbn=0-471-14385-5}} {{Clear}}{{National Register of Historic Places in California}}2. ^1 2 {{cite web|url=http://loc.gov/pictures/collection/hh/item/ca1341/|title=Bridgeport Covered Bridge|date=1985-01-01|work=|publisher=Historic American Engineering Record (HAER) No. CA-41}} 3. ^1 {{NRISref|2007a}} 4. ^1 {{cite ohp|390|Bridgeport Covered Bridge|2012-10-10}} 5. ^{{cite web|url=http://www.noehill.com/nevada_county_california/cal0390.asp|title=California Historical Landmarks in Nevada County|publisher=noehill.com|accessdate=2009-05-28}} 6. ^[https://archive.is/20120724061130/http://www.appeal-democrat.com/news/bridge-110755-bridgeport-california.html Historic Bridgeport Bridge to close - Appeal-Democrat] 7. ^State budget includes money to restore Bridgeport Covered Bridge - Transportation - The Sacramento Bee 8. ^The Nevada County, California website {{webarchive|url=https://archive.is/20120908113101/http://www.ncgold.com/Museums_Parks/syrp/Bridgeport/ |date=September 8, 2012 }} that claims Bridgeport Covered Bridge has a longer span than the Old Blenheim Bridge had, also claims it is a National Historic Landmark. While the National Historic Landmark search system {{webarchive|url=https://web.archive.org/web/20080710061857/http://tps.cr.nps.gov/nhl/ |date=2008-07-10 }} does not report on the existence of this bridge as a National Historic Landmark. It is a California Historical Landmark and listed at the National Register of Historic Places. 9. ^Comstock, David A. and Zimmerman, Bernard, Exploring Nevada County (2017 electronic edition} #4. 10. ^{{cite web |url=http://www.hmdb.org/marker.asp?marker=8540 |title=Bridgeport (Nyes Crossing) Covered Bridge |accessdate=2008-08-03 |publisher=HISTORICAL MARKER DATABASE}} 11. ^1 {{cite web |url=http://loc.gov/pictures/item/ny2006/ |title=Blenheim Bridge |work=National Covered Bridges Recording Project |publisher=Historic American Engineering Record (HAER) No. NY-331|first=Lola |last=Bennett |date=2002–2003}} 17 : Covered bridges in California|Wooden bridges in California|Road bridges in California|Pedestrian bridges in California|Bridges in Nevada County, California|Bridges completed in 1862|California Historical Landmarks|Historic Civil Engineering Landmarks|Covered bridges on the National Register of Historic Places in California|National Register of Historic Places in Nevada County, California|Former road bridges in the United States|Historic American Buildings Survey in California|Historic American Engineering Record in California|Tourist attractions in Nevada County, California|1862 establishments in California|Road bridges on the National Register of Historic Places in California|Burr Truss bridges in the United States |
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