description Guanjiao Tunnel Overview
The Guanjiao Tunnel is a high-altitude railway tunnel located in Qinghai province, China, that routes the Qinghai-Tibet Railway through the Guanjiao Mountains. To overcome capacity limits and severe winter weather on the original route, a new double-track replacement bore was completed and opened to rail traffic in 2014. This modern tunnel extends over 32 kilometers in length, ranking among the longest high-altitude railway tunnels in the world and serving as a critical freight and passenger corridor to the Tibetan Plateau.
help Guanjiao Tunnel FAQ
What railway uses the Guanjiao Tunnel?
The Guanjiao Tunnel carries the Qinghai–Tibet Railway through the Guanjiao Mountains in Qinghai Province, China. It is a critical section of the high-altitude rail route connecting Xining to Lhasa.
When did the new Guanjiao Tunnel open?
A longer replacement bore for the original Guanjiao Tunnel opened in 2014, significantly improving capacity and travel times on the Qinghai–Tibet Railway. The new tunnel was built to modern specifications to handle increased traffic on the line.
Where is the Guanjiao Tunnel located?
The Guanjiao Tunnel is located in Qinghai Province in western China, crossing the Guanjiao Mountains on the Qinghai–Tibet Railway. The route traverses some of the highest-elevation terrain of any railway in the world.
How long is the new Guanjiao Tunnel?
The 2014 replacement tunnel for the Guanjiao Tunnel is approximately 32 kilometres long, making it one of the longest railway tunnels in China. It dramatically reduced the crossing time compared to the older, shorter bore.
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