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| TheGaurdian, Top Photo Corporation/Rex "The Aizhai suspension bridge links two tunnels 1,176 metres apart, carrying traffic 355 metres above the foot of Dehang Canyon." "The bridge forms a key section of the Jishou-Chadong Expressway, which has 18 tunnels in total comprising about half of its length." Previously, a drive from one side of the canyon to the other took about a half-hour. Now it is just a minute or two. Note the windy road in the left foreground that was the original crossing of the canyon. The bridge was ahead of schedule and opened to traffic at the end of 2011. The opening ceremony wasn't conducted until Mar 2012. [This web page has several more photos.] |
I turned the labels back on in the satellite map to better show the old windy road. The label for the new road is way off. Until a few days ago, I never used labels on the satellite map. Now Chrome turns them on by default, and it drives me nuts because I keep having to turn them off. Since I don't normally use labels, I don't know if they are normally this erroneous.
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| Satellite |
The G65 Baotou Expressway "shortens the journey time between Chongqing and Changsha in this very mountainous region from several days to just eight hours. The deck carries six lanes of traffic with a pedestrian walkway underneath." [BridgesOfDublin]
The west abutment dramatically illustrates how the deck attaches to the tunnel rather than the tower. And the back span cables, unlike most suspension bridges, don't hold anything up. They just anchor to the mountain.
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| InterestingEngineering, Image Source: Highest Bridges "This is a bridge of firsts, with the engineers behind the structure attributing 4 impressive feats to the tunnel-to-tunnel bridge. As mentioned above, it has a 1146 meter main span making it the longest in its category. The construction of the bridge was also the first commercial use of a pylon and girder separation structures. The bridge is the first to use rock anchor suspension as well as pre-stressed carbon fiber for reinforcement. Lastly, during the erection of the steel trusses, workers used an innovative rail-cable sliding technique to hoist them into place." |
I disagree that it "is the first to use rock anchor suspension." The Bear Mountian (Purple Heart Veterans) Bridge over the Hudson River did that in 1924.
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| Street View, May 2023 |
And this is what the tunnel portal on the other end looks like.
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Highway Engineering Discoveries posted [Several comments confirmed that this was the Aizhai Bridge.] Highway Engineering Discoveries posted again Completed in 5 years at a cost of $1 billion. The bridge is 1,146 meters long and 355 meters high. |
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| HighestBridges [This web site has a lot of photos and some diagrams including this comparison of this bridge with the New River Gorge Bridge. It would also be interesting to see a diagram comparing it to the Royal Gorge Bridge.] |
Before the main cable suspended the deck, it suspended a cableway that was used to transport deck segments to their position in the bridge.
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| HighestBridges_construction, this page has a lot more photos of this cableway technique that was pioneered for this bridge. |
Base jumping events has to help the local economy. More jumping
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| HighestBridges_construction |
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Highway Engineering Discoveries posted The Aizhai Bridge is a suspension bridge on the G65 Baotou–Maoming Expressway near Jishou, Hunan, China. The bridge was built as part of an expressway from southwest China's Chongqing Municipality to Changsha. Dennis DeBruler: That is not a suspension bridge, that is a cable stay bridge. This is the Aizhai Suspension Bridge: |
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| Highway Engineering Discoveries posted Aizhai Bridge, China - Sidu river bridge china height of 496 m 1627 ft this 1222 m 4009 ft long suspension... Dennis DeBruler: The stats are for the Sidu River Bridge. It was the world's highest bridge during 2009-16. https://goo.gl/maps/cCg8bio5izzfu2c89 The Aizhai Bridge is over the Dehang Canyon. Since I don't see a river in the canyon, I presume that the photo is of the Aizhai Bridge. It spans 1,176m (0.73 miles) and is 335m (1100') above ground. NickeysCircle [This web page confirms that this photo is of the Aizhai Bridge, but it makes the mistake of leaving out the "tunnel-to-tunnel" qualifier when claiming it is the world's highest suspension bridge.] |
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