EngineeringLength
Longest twin-tube road tunnel
Record
22.13 km
13.751 mi
- Record holder
- Tianshan Shengli Tunnel
What to remember
Sengli Daban pass sits at 4,091 m in Xinjiang, China. To bypass it, the Ürümqi-Yuli Expressway runs under the mountain through the Tianshan Shengli Tunnel, 22.13 km long, the longest twin-tube road tunnel in the world.
Construction started in 2020, tunnelling was completed in December 2024 and the tunnel opened to traffic on 26 December 2025. It is also the longest road tunnel in the world at an altitude of over 4,000 m.
Related records
Sources and licences
- Value, holder and date: Wikipedia article “List of longest tunnels” (revision used 1379104625). Data from Wikipedia, licensed under CC BY-SA 4.0.
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