Aizhai Bridge - Revision history

Sakowski at 02:36, 14 March 2026

2026-03-14T02:36:57Z

Sakowski at 06:58, 19 May 2022

2022-05-19T06:58:39Z

Sakowski at 02:16, 18 May 2022

2022-05-18T02:16:58Z

Sakowski at 01:44, 11 February 2022

2022-02-11T01:44:04Z

Sakowski at 01:35, 8 February 2022

2022-02-08T01:35:10Z

Sakowski at 00:05, 29 January 2022

2022-01-29T00:05:04Z

Sakowski at 02:28, 18 September 2021

2021-09-18T02:28:25Z

Sakowski at 01:52, 7 May 2019

2019-05-07T01:52:16Z

Sakowski at 03:32, 21 December 2018

2018-12-21T03:32:02Z

Sakowski at 22:14, 2 April 2018

2018-04-02T22:14:11Z

← Older revision		Revision as of 02:36, 14 March 2026
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	The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 50 meters / 165 feet - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 1,176 meters / 3,858 feet. In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings. The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead. With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel. Due to a gap of approximately 100 meters / 328 feet between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge. The overlook and visitors center offer additional views of the broad valley.		The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 50 meters / 165 feet - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 1,176 meters / 3,858 feet. In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings. The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead. With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel. Due to a gap of approximately 100 meters / 328 feet between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge. The overlook and visitors center offer additional views of the broad valley.
−
−	~~Click on the excellent YouTube channel "Chinese Bridge" to see a video of the Aizhai Bridge.~~
−	~~https://www.youtube.com/watch?v=3hQf16PFYRw~~

@@ Line 12: / Line 12: @@
 Aizhai was once the world’s highest tunnel to tunnel bridge and among a group of around 20 suspension bridges in China to cross a valley so wide it seems to be connecting two mountain ranges.  Back in 2012 Aizhai was one of just 4 large span, high level suspension bridges.  The first three were the Siduhe, Balinghe and Beipanjiang Hukun bridges.
-Of the world's 400 or so highest bridges, Aizhai has the 5th longest span with a tower to tower distance of 3,858 feet (1,176 mtrs).  Located deep in the heart of China’s Hunan Province near the city of Jishou, the suspension bridge is the largest structure on the Jishou to Chadong expressway with a deck 1,102 feet (336 mtrs) above the DeHang Canyon and has also become a major tourist attraction with a walkway partly made of glass accessible via a large group of escalators and elevators.
+Of the world's 400 or so highest bridges, Aizhai has the 5th longest span with a tower to tower distance of 1,176 meters / 3,858 feet.  Located deep in the heart of China’s Hunan Province near the city of Jishou, the suspension bridge is the largest structure on the Jishou to Chadong expressway with a deck 336 meters / 1,102 feet above the DeHang Canyon and has also become a major tourist attraction with a walkway partly made of glass accessible via a large group of escalators and elevators.
 The main cables have a diameter of 85cm composed of 169 steel strands.  The cables follow a layout of 242+1176+242 meters with a sag ratio of 9.6 to 1.  The steel truss is 7.5 meters deep and 27 meters wide with each standard section being 14.5 meters long.  The unique rail and cable launching method of the 69 truss sections allowed the completion of the entire truss in only 3 months.  The entire 1,000 meter long truss weighs 8,000 tons.
-The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 165 feet (50 mtrs) - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 3,858 feet (1,176 mtrs).  In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings.  The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead.  With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel.  Due to a gap of approximately 328 feet (100 mtrs) between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge.  The overlook and visitors center offer additional views of the broad valley.
+The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 50 meters / 165 feet - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 1,176 meters / 3,858 feet.  In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings.  The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead.  With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel.  Due to a gap of approximately 100 meters / 328 feet between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge.  The overlook and visitors center offer additional views of the broad valley.
 Click on the excellent YouTube channel "Chinese Bridge" to see a video of the Aizhai Bridge.

@@ Line 14: / Line 14: @@
 Of the world's 400 or so highest bridges, Aizhai has the 5th longest span with a tower to tower distance of 3,858 feet (1,176 mtrs).  Located deep in the heart of China’s Hunan Province near the city of Jishou, the suspension bridge is the largest structure on the Jishou to Chadong expressway with a deck 1,102 feet (336 mtrs) above the DeHang Canyon and has also become a major tourist attraction with a walkway partly made of glass accessible via a large group of escalators and elevators.
-The main cables have a diameter of 85cm composed of 169 steel strands.  The steel truss is 7.5 meters deep and 27 meters wide.  The unique rail and cable launching method of the 69 truss sections allowed the completion of the entire truss in only 3 months.
+The main cables have a diameter of 85cm composed of 169 steel strands.  The cables follow a layout of 242+1176+242 meters with a sag ratio of 9.6 to 1.  The steel truss is 7.5 meters deep and 27 meters wide with each standard section being 14.5 meters long.  The unique rail and cable launching method of the 69 truss sections allowed the completion of the entire truss in only 3 months.  The entire 1,000 meter long truss weighs 8,000 tons.
 The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 165 feet (50 mtrs) - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 3,858 feet (1,176 mtrs).  In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings.  The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead.  With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel.  Due to a gap of approximately 328 feet (100 mtrs) between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge.  The overlook and visitors center offer additional views of the broad valley.

← Older revision		Revision as of 01:44, 11 February 2022
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−	Aizhai is the world’s highest tunnel to tunnel bridge and ~~the fourth~~ suspension ~~bridge~~ in China to cross a valley so wide it seems to be connecting two mountain ranges. The first three were the Siduhe, Balinghe and Beipanjiang Hukun bridges. Of the world's 400 or so highest bridges, Aizhai has the ~~3rd~~ longest span with a tower to tower distance of 3,858 feet (1,176 mtrs). Located deep in the heart of China’s Hunan Province near the city of Jishou, the suspension bridge is the largest structure on the Jishou to Chadong expressway with a deck 1,102 feet (336 mtrs) above the DeHang Canyon and has also become a major tourist attraction with a walkway partly made of glass accessible via a large group of escalators and elevators.	+	Aizhai was once the world’s highest tunnel to tunnel bridge and among a group of around 20 suspension bridges in China to cross a valley so wide it seems to be connecting two mountain ranges. Back in 2012 Aizhai was one of just 4 large span, high level suspension bridges. The first three were the Siduhe, Balinghe and Beipanjiang Hukun bridges.
		+
		+	Of the world's 400 or so highest bridges, Aizhai has the 5th longest span with a tower to tower distance of 3,858 feet (1,176 mtrs). Located deep in the heart of China’s Hunan Province near the city of Jishou, the suspension bridge is the largest structure on the Jishou to Chadong expressway with a deck 1,102 feet (336 mtrs) above the DeHang Canyon and has also become a major tourist attraction with a walkway partly made of glass accessible via a large group of escalators and elevators.
		+
		+	The main cables have a diameter of 85cm composed of 169 steel strands. The steel truss is 7.5 meters deep and 27 meters wide. The unique rail and cable launching method of the 69 truss sections allowed the completion of the entire truss in only 3 months.

	The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 165 feet (50 mtrs) - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 3,858 feet (1,176 mtrs). In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings. The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead. With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel. Due to a gap of approximately 328 feet (100 mtrs) between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge. The overlook and visitors center offer additional views of the broad valley.		The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 165 feet (50 mtrs) - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 3,858 feet (1,176 mtrs). In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings. The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead. With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel. Due to a gap of approximately 328 feet (100 mtrs) between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge. The overlook and visitors center offer additional views of the broad valley.

← Older revision		Revision as of 01:35, 8 February 2022
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	[[File:Aizhai infinity pool4.jpeg\|550px\|center]]		[[File:Aizhai infinity pool4.jpeg\|550px\|center]]
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		+	[[File:AizhaiSatellite.jpg\|750px\|center]]
		+	Aizhai Bridge satellite image.
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		+	[[File:AizhaiSatelliteWide.jpg\|750px\|center]]

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 [[File:Aizhai1176FinalElev.jpg|900px|center]]<br />
 Aizhai Bridge Elevation<br />
 </div>

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 [[File:Aizhai3SistersStreet.jpg|750px|center]]
 The town of Aizhai with the 3 sisters in the distance.  Image by Eric Sakowski / HighestBridges.com
 <div style="text-align: center; font-size: 25px;">

← Older revision		Revision as of 03:32, 21 December 2018
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	[[File:122AizhaiAnchorageByFilmer.jpg\|750px\|center]]		[[File:122AizhaiAnchorageByFilmer.jpg\|750px\|center]]
	Image by John Filmer.		Image by John Filmer.
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		+	[[File:AizhaiAnchorageRender.jpg\|750px\|center]]
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		+	[[File:AizhaiCloudDrone.jpg\|750px\|center]]
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		+	[[File:AizhaiNorthAnchorRender2.jpg\|750px\|center]]
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		+	[[File:AizhaiSideStructureRender.jpg\|750px\|center]]
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		+	[[File:AizhaiSouthAnchorRender.jpg\|750px\|center]]
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		+	[[File:AizhaiTieDownRender.jpg\|750px\|center]]
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		+	[[File:AizhaiTunnelEntranceDrone.jpg\|750px\|center]]

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-Aizhai is the world’s highest tunnel to tunnel bridge and the fourth suspension bridge in China to cross a valley so wide it seems to be connecting two mountain ranges.  The first three were the Siduhe, Balinghe and Beipanjiang 2009 bridges.  Of the world's 400 or so highest bridges, none has a main span as long as Aizhai with a tower to tower distance of 3,858 feet (1,176 mtrs).  Located deep in the heart of China’s Hunan Province near the city of Jishou, the suspension bridge is the largest structure on the Jishou to Chadong expressway with a deck 1,102 feet (336 mtrs) above the DeHang Canyon.
+Aizhai is the world’s highest tunnel to tunnel bridge and the fourth suspension bridge in China to cross a valley so wide it seems to be connecting two mountain ranges.  The first three were the Siduhe, Balinghe and Beipanjiang Hukun bridges.  Of the world's 400 or so highest bridges, Aizhai has the 3rd longest span with a tower to tower distance of 3,858 feet (1,176 mtrs).  Located deep in the heart of China’s Hunan Province near the city of Jishou, the suspension bridge is the largest structure on the Jishou to Chadong expressway with a deck 1,102 feet (336 mtrs) above the DeHang Canyon and has also become a major tourist attraction with a walkway partly made of glass accessible via a large group of escalators and elevators.
-The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 165 feet (50 mtrs) - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 3,858 feet (1176 mtrs).  In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings.  The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead.  With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel.  Due to a gap of approximately 328 feet (100 mtrs) between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge.  An overlook and visitors center will offer additional views of the broad valley.
+The two tunnels on either side of the Aizhai bridge allowed the engineers to use the mountain top for the location of one of the towers, reducing its height to just 165 feet (50 mtrs) - unusually short for a bridge with a span nearly as long as the Golden Gate bridge at 3,858 feet (1,176 mtrs).  In addition to cost savings, the stubby support also allows the bridge to blend more naturally into its surroundings.  The taller bridge tower is no less unique with side span cables that soar down the backside of a mountain, making first time visitors quizzical as to what exactly lies ahead.  With most of the structure hidden from view, the bridge will come as a jaw-dropping surprise whether you enter the canyon from either tunnel.  Due to a gap of approximately 328 feet (100 mtrs) between the last truss suspenders and the tops of the bridge towers, the engineers added some additional ground anchored suspenders to stabilize the two massive suspension cables and reduce any oscillations that could damage other components of the bridge.  The overlook and visitors center offer additional views of the broad valley.
 Click on the excellent YouTube channel "Chinese Bridge" to see a video of the Aizhai Bridge.