Jinshajiang Bridge Hutiaoxia - Revision history

Sakowski at 09:21, 22 January 2025

2025-01-22T09:21:17Z

Sakowski at 00:11, 16 March 2024

2024-03-16T00:11:09Z

Sakowski at 00:09, 16 March 2024

2024-03-16T00:09:55Z

Sakowski at 02:37, 3 March 2024

2024-03-03T02:37:49Z

Sakowski at 02:34, 3 March 2024

2024-03-03T02:34:28Z

Sakowski at 03:12, 5 March 2023

2023-03-05T03:12:19Z

Sakowski at 23:39, 18 May 2022

2022-05-18T23:39:34Z

Sakowski at 23:35, 18 May 2022

2022-05-18T23:35:33Z

Sakowski at 23:34, 18 May 2022

2022-05-18T23:34:14Z

Sakowski at 23:26, 18 May 2022

2022-05-18T23:26:15Z

← Older revision		Revision as of 09:21, 22 January 2025
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	[[File:483TigerOverlookByFilmer.jpg\|750px\|center]]		[[File:483TigerOverlookByFilmer.jpg\|750px\|center]]
	Image by John Filmer.		Image by John Filmer.
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		+	[[File:LongpanDamRender222mH.jpg\|750px\|center]]
		+	By 2035 the giant 222 meter tall Longpan Dam will be completed just upstream of the famous Tiger Leaping Gorge.

← Older revision		Revision as of 00:11, 16 March 2024
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	[[File:JinshajiangLixiangCableStayedProposal.jpg\|900px\|center]]		[[File:JinshajiangLixiangCableStayedProposal.jpg\|900px\|center]]
−	Jinshajiang Bridge Hutiaoxia 240 meter high ~~cable stayed~~ proposal.	+	Jinshajiang Bridge Hutiaoxia 240 meter high extradosed proposal.

← Older revision		Revision as of 00:09, 16 March 2024
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	[[File:HutiaoxiaDeck.jpg\|750px\|center]]		[[File:HutiaoxiaDeck.jpg\|750px\|center]]
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		+	[[File:JinshajiangLixiangCableStayedProposal.jpg\|900px\|center]]
		+	Jinshajiang Bridge Hutiaoxia 240 meter high cable stayed proposal.
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		+	[[File:JinshajiangLixiangSuspension.jpg\|900px\|center]]
		+	Jinshajiang Bridge Hutiaoxia two tower suspension proposal.

← Older revision		Revision as of 02:37, 3 March 2024
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−	[[File:TigerLeapingExpresswayTower.JPG\|~~550px~~\|center]]	+	[[File:TigerLeapingExpresswayTower.JPG\|450px\|center]]

← Older revision		Revision as of 02:34, 3 March 2024
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	[[File:TigerLeapingExpresswayMrLi13.jpg\|750px\|center]]		[[File:TigerLeapingExpresswayMrLi13.jpg\|750px\|center]]
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← Older revision		Revision as of 03:12, 5 March 2023
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	[[File:DonauSideRender.jpg\|750px\|center]]		[[File:DonauSideRender.jpg\|750px\|center]]
−	Donau Bridge across the Danube River with a towerless span of 300 meters under construction for a ~~2022~~ opening.	+	Donau Bridge across the Danube River with a towerless span of 300 meters under construction for a 2024 opening.

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 Located just a few kilometers upstream of China's famous Tiger Leaping Gorge, the Jinshajiang Bridge Hutiaoxia and its parallel railway twin have become the most photographed and well known suspension bridges in all of Yunnan Province.
-The Jinshajiang Hutiaoxia Bridge is the largest and highest of many spectacular bridges on the Xiangli G0613 Beijing Tibet Expressway that connects the popular tourist cities of Lijiang and Shangri-La.  What once took three hours on the dangerous local route G214 road is now a 90 minute scenic drive high above the Jinsha River gorge and across dozens of deep creek canyons and valleys.  Several of these bridges exceed 100 meters in height including the giant Juejiping beam bridge with piers 180 meters tall.
+The Jinshajiang Hutiaoxia Bridge is the largest and highest of many spectacular bridges on the Xiangli G0613 Beijing Tibet Expressway that connects the popular tourist cities of Lijiang and Shangri-La.  What once took three hours on the dangerous local route G214 road is now a 90 minute scenic drive high above the Jinsha River gorge and across dozens of deep creek canyons and valleys.  Several of these beam bridges exceed 100 meters in height including the Yanyang Number 1, Gunawan, Shangyuan Number 1, Shangbuluo and Walibie Bridges.
 A number of site studies were undertaken before the final Hutiaoxia suspension design was picked.  Early designs included a more conventional two-tower suspension bridge with a 902 meter main span close to the junction of the Jinshajiang and Chongjiang Rivers and a multi-span extradosed configuration with three spans of 260 meters.

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 Eventually the engineers decided on a narrower location further downstream that would only require a main span of 766 meters.  The only problem was the west side slope was too steep to support a large tower foundation.  So they decided to terminate the cables directly into a mountain tunnel ground anchorage thereby creating the largest single tower suspension bridge span in the world.
-There have been previous suspension bridges with only one tower and even completely towerless suspension footbridges but none have been built on a scale as large as the Jinshajiang Hutiaoxia Bridge.  This record was surpassed in 2022 by the Lvzhijiang Bridge, also in Yunnan Province, with a main span of 780 meters.
+There have been previous suspension bridges with only one tower and even completely towerless suspension footbridges but none had been built on a scale as large as the Jinshajiang Hutiaoxia Bridge.  This single tower record was surpassed in 2022 by the Lvzhijiang Bridge, also in Yunnan Province, with a main suspension span of 780 meters.
 In China the most famous old school example of this bridge type is surely the 1983-built Dazi Bridge in Tibet over the Lhasa River with a large span of 415 meters and a total length of 500 meters with an anchorage high up on a cliff that required cable stays on the high end.

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 Eventually the engineers decided on a narrower location further downstream that would only require a main span of 766 meters.  The only problem was the west side slope was too steep to support a large tower foundation.  So they decided to terminate the cables directly into a mountain tunnel ground anchorage thereby creating the largest single tower suspension bridge span in the world.
-There have been previous suspension bridges with only one tower and even completely towerless suspension footbridges but none have been built on a scale as large as the Jinshajiang Hutiaoxia Bridge.  In China the most famous example of this bridge type is surely the 1983-built Dazi Bridge in Tibet over the Lhasa River with a large span of 415 meters and a total length of 500 meters with an anchorage high up on a cliff that required cable stays on the high end.
+There have been previous suspension bridges with only one tower and even completely towerless suspension footbridges but none have been built on a scale as large as the Jinshajiang Hutiaoxia Bridge.  This record was surpassed in 2022 by the Lvzhijiang Bridge, also in Yunnan Province, with a main span of 780 meters.
 For modern expressway bridges, the most recent attempt at designing a nearly towerless suspension bridge was a scheme put forth for the 300 meter deep gorge crossing of the Zhijingje Bridge in Hubei Province that would have had a central span of 540 meters supported by stubby towers approximately 20 meters tall.
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 If being the world's largest single tower suspension bridge was not enough, the Hutiaoxia Bridge will also have China's first completely tunneled bridge entrance and exit roads on the north, Shangri-La side.  Steep switchbacks will carry drivers to and from the bottom of the canyon where the local road will allow access to the famous Tiger Leaping Gorge scenic spot.  But these switchbacks might not be around forever.  Both Jinshajiang Hutiaoxia bridges were designed to allow reservoir water over 200 meters deep to fill beneath them in case the planned Tiger Leaping Gorge Dam is constructed just a couple of kilometers downstream.  Environmental groups and tourism businesses in the region are fighting the planners of the dam to preserve the natural state of the river and the gorge and with so many tourists vital to the economies of both Lijiang and Shangri-La, there is a good chance it will never be built.
-The total length of the Jinshajiang Bridge Hutiaoxia is 1,020 meters including six approach spans of 41.5 meters.  The one tower on the south side is 149 meters tall.
+The total length of the Jinshajiang Bridge Hutiaoxia is 1,020 meters including six approach spans of 41.5 meters.  The one tower on the south side is 149.5 meters tall.  The truss sections are each 11.5 meters long with a depth of 6.615 meters.
 Click on the excellent YouTube channel "Chinese Bridge" to see a video of the Jinshajiang Bridge Hutiaoxia.