Tianshan Shengli Tunnel
Tianshan Shengli Tunnel is a highway tunnel in the Tianshan Mountains of Xinjiang, China. It is designed as two parallel tubes, each with two lanes of traffic. The tunnel has been completed and opened to traffic on December 26, 2025, it is about long and is the longest expressway tunnel in the world.
The tunnel is part of the Ürümqi–Yuli Expressway, connecting Ürümqi in the north of Xinjiang to Yuli in the south. Around 3,000 workers took part in the construction at elevations above 3,000 metres. The travel time decreases from around seven to three hours. The construction cost of the tunnel is estimated at ¥26.8 billion.