Sunday, February 18, 2024

1957 Wuhan, 1995 Second Wuhan and 2011 Erqi Yangtze River Bridges in China

Erqi: (Satellite)
Wuhan: (Satellite, 1,595 photos)
Second Wuhan: (Satellite)

(First) Wuhan Bridge:
Y Hu, Jul 2019
 
hubei
When completed in 1957, this was the easternmost bridge on the Yangtze River. It is 1.6km (1mile) long with an upper deck for traffic and a lower deck for the Beijing-Guangzhou railway line.
 
ChinaDaily
There is a full-time maintenance team for the bridge. "Since opening, the designated speed of trains crossing the bridge has increased from 35 to 300 kilometers per hour, and the travel time from Wuhan to Guangzhou, Guangdong province, has been reduced from 44 hours to less than four."

I've heard that China has issues with air pollution, but I didn't realize how bad it was until I started looking at photos of these bridges. Is this pollution or fog obscuring the bridges?
cgtn
"The Wuhan Yangtze River Bridge was the very first bridge built on the river."




The Second Wuhan Bridge is in the foreground, and the Eriqi Bridge is in the left background.
全球全景, Mar 2019


Highway Engineering Discoveries posted

The Second Wuhan Bridge was completed in 1995. It is a " Cable-stayed bridge with semi-fan system" with 392 cables. The length of the main bridge is 1,877m (1.2mile). [ [strucurae]

ResearchGate
Yu, M. & Guo, Hang & Chengwu, Zou. (2006). Application of Wavelet Analysis to GPS Deformation Monitoring. 670 - 676. 10.1109/PLANS.2006.1650660. 

It has a central span of 400m (1312') and "bridgeheads" that are 90m (295') high. They give a figure of 392 cables. I think that is per bridgehead (tower). [hubei]





More fog or pollution?
LFI Gallery, cropped
It was completed in 2011. "The total length of the line is 6507 meters [4 miles], and the main bridge is 1732 meters [1 mile]."

"The 616m [0.4 mile, 2021'] long mid span ranking the bridge as the world's largest cable-stayed span with three towers, but also the longest span cable-stayed bridge with composite girder." [fidic_award]

fidic

Steve Chen via pexels, License: Creative Commons Attribution (CC BY)

It looks like salties can come all the way up the river to here. Part of the Second Wuhan Bridge is in the background.
Digitally zoomed to photo resolution

A Flickr photo that has a good view of the towers and of lots of ships.

I don't think fog would be orange. Are their steel mills in this town?
 全球全景_left, Mar 2022, Erqi Bridge

 全球全景_right, Mar 2022, Secon Wuhan Bridge

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