Difference between revisions of "Pine Valley Creek Bridge"

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(Created page with '<div style="font-size: 25px; text-align: center;"> Pine Valley Creek Bridge<br /> Nello Irwin Greer Memorial Bridge<br /> Pine Valley, California, United States<br /> 440 feet h…')
 
 
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450 foot span / 137 meter span<br />
 
450 foot span / 137 meter span<br />
 
1974<br />
 
1974<br />
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Image by Tim Farmer.
  
  
One of the highest reservoir bridges in the United States, Archie Stevenot bridge carries route 49 across the Stanislaus River and the New Melones reservoir in the Gold Country area of Northern California.  Rising approximately 400 feet (122 mtrs) from foundation to cap, the central pier is tied with California’s Auburn-Foresthill as the tallest ever built in the United States.  Located several miles upstream is the 355 foot (108 mtr) high Parrotts Ferry bridge.  Like Archie Stevenot, the Parrotts Ferry bridge is underwater most of the timeBoth bridges were completely out of the water in 1992 from a severe droughtI know of no reservoir in North American history that ever dropped more than 367 feet (112 mtrs) as the New Melones Lake did during October of that yearYou can check on current levels at http://cdec.water.ca.gov/reservoir.html.
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Pine Valley Creek is the highest concrete beam bridge in the United States with a 4-lane road deck 440 feet (134 mtrs) above the creek.  It was the first bridge in the United States to be built using the cast-in-place segmental balanced cantilever methodAn open gap in the center of the bridge was left for the option to add two more lanes if traffic demands ever warranted itCompleted in 1974 along Interstate 8 about 60 miles (97 kms) East of San Diego, California, the bridge was eventually named the Nello Irwin Greer Memorial bridge after the man who guided the design of the highway through the Pine Valley region. 
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Famous bridge engineer Man-Chung Tang was the chief designer behind the bridgeSince the construction of a segmental bridge had never been done in California, Mr. Tang and his team had to design everything from scratch including the gantry, travelers and formsMan-Chung Tang went on to engineer dozens of North American segmental bridges as well as many large bridges in China and EuropeHe currently works at T.Y. Lin out of their offices in San Francisco and Chongqing.
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[[File:PineValleyElevSoon.jpg|1000px|center]]<br />
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Pine Valley Creek Bridge Elevation<br />
 
Pine Valley Creek Bridge Elevation<br />
 
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[[File:2PineValleyAerial.jpg|1000px|center]]
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Image courtesy of Man-Chung Tang.
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[[File:PineValleyBridge2.jpg|370px|center]]
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Image courtesy of Man-Chung Tang.
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[[File:2PineValleyAerial.jpg|750px|center]]
 
Pine Valley Creek Bridge satellite image.
 
Pine Valley Creek Bridge satellite image.
  

Latest revision as of 20:23, 14 January 2010

Pine Valley Creek Bridge
Nello Irwin Greer Memorial Bridge
Pine Valley, California, United States
440 feet high / 134 meters high
450 foot span / 137 meter span
1974

1PineValleyTimFarmerPanoramio.jpg

Image by Tim Farmer.


Pine Valley Creek is the highest concrete beam bridge in the United States with a 4-lane road deck 440 feet (134 mtrs) above the creek. It was the first bridge in the United States to be built using the cast-in-place segmental balanced cantilever method. An open gap in the center of the bridge was left for the option to add two more lanes if traffic demands ever warranted it. Completed in 1974 along Interstate 8 about 60 miles (97 kms) East of San Diego, California, the bridge was eventually named the Nello Irwin Greer Memorial bridge after the man who guided the design of the highway through the Pine Valley region.

Famous bridge engineer Man-Chung Tang was the chief designer behind the bridge. Since the construction of a segmental bridge had never been done in California, Mr. Tang and his team had to design everything from scratch including the gantry, travelers and forms. Man-Chung Tang went on to engineer dozens of North American segmental bridges as well as many large bridges in China and Europe. He currently works at T.Y. Lin out of their offices in San Francisco and Chongqing.



Pine Valley Creek Bridge Elevation


PineValleyBridge.jpg

Image courtesy of Man-Chung Tang.


PineValleyBridge2.jpg

Image courtesy of Man-Chung Tang.


2PineValleyAerial.jpg

Pine Valley Creek Bridge satellite image.