Yachi Railway Bridge
Yachi Railway Bridge
成贵高铁鸭池河大桥
Daguanzhen, Guizhou, China
892 feet high / 272 meters high
1,430 foot span / 436 meter span
2019
The Yachi Railway Bridge is not only impressive for its height of nearly 300 meters but for having an epic main arch span of 436 meters. Among railway-only steel arch bridges, only the Nujiang and the Xijiang have longer main spans. Designed for high speed trains on the line from Guiyang to Chengdu, the twin track structure is composed of a steel-concrete composite truss. The main ribs lean 4.62 degrees inward forming a basket-handle arch shape with suspenders for the central section. The approach spans on either side of the main arch are also unique being composed of a cantilevered T-beam of 2x61.75 meters.
The 183 meter highline towers were the tallest ever built for the construction of a bridge and were located 460 meters apart.
Spanning a deep reservoir from a downstream dam, the Yachi Railway Bridge is approximately 232 meters above the surface of the lake. The Wu River has a greater number of high bridges across its waters then any other river on earth with almost two dozen crossings exceeding 100 meters in height. Approximately 45 kilometers upstream of the Yachi Railway Bridge is the Najiehe Railway Bridge which is the highest railway span in China at 310 meters.
Although not as large as Yachi, the Xixihe Railway arch bridge is also located on the Guiyang-Chengduu line and is one of the world's 10 highest railway bridges at 256 meters. The entire line measures 651 kilometers in length.
Click on the excellent YouTube channel "Chinese Bridge" to see a video of the Yachi Railway Bridge. https://www.youtube.com/watch?v=R5GJTJsDQrU
Yachi Railway Bridge Elevation
成贵高铁鸭池河大桥令人印象深刻的不仅是它有近300米的高度，而且跨度达到令人惊叹的436米。世界上的铁路钢拱桥中，仅有大瑞铁路怒江大桥和南广铁路西江大桥跨度更大。作为成都到贵阳高速铁路上最大的桥，这座双线铁路拱桥使用了钢桁架和混凝土拱混合结构。主拱肋有4.62度向心倾角，构成向中部收缩的提篮拱结构。两侧的引桥结构也是独一无二的，每侧使用2*61.75米悬臂T梁。
修建该拱桥使用的扣塔高达183米，是有史以来最高的。两扣塔间相距460米。
因为桥下是个深邃的水库，该桥到水库满水位水面距离约为230米。乌江上有世界最多的高桥，桥面高度超百米的乌江大桥有两打以上（鸭池河是乌江干流的当地名字）。鸭池河高速铁路桥上游约45公里是纳界河铁路桥，距离水面310米，那座是中国桥面最高的铁路桥。
位于同一条铁路（成贵高铁）上不远处的西溪河大桥尽管没有鸭池河大桥的跨度，但高度也有256米，位居世界最高铁路桥前10之列。成贵高铁全长651公里。
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
Image by Eric Sakowski.
In this view the highline towers first stage was completed at 147 meters with another 35 meter tall section still to be added on top. Image by John Hart.
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Damian Kulash Sr.
Image by Damian Kulash Sr.
Image by Eric Sakowski / HighestBridges.com
Image by Han Ruoyu.
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Richard Scott.
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
The temporary footbridge across the Wujiang River is impressive with a main span of approximately 350 meters. Image by Eric Sakowski / HighestBridges.com
Image by Richard Scott.
Image by Richard Scott.
Image by Richard Scott.
Image by Eric Sakowski / HighestBridges.com
Image from Tadashi Ashimi.
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Documentary Filming
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
The highline construction towers are nearly at their full height of 182 meters. Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
Yachi River north of the railway bridge site. Image by Eric Sakowski / HighestBridges.com
Image by Eric Sakowski / HighestBridges.com
The river slope at the bridge crossing before construction began.
The Suofengying Dam is located approximately 18 kilometers downstream of the Yachi Railway Bridge. The giant reservoir stretches for 35.5 kilometers with a surface elevation of 837 meters.
Yachi Railway Bridge satellite image.
Yachi Railway Bridge satellite image before construction began.
Yachi Railway Bridge location map.
Chengdu-Guiyang Railway map.
