Longest spiral road tunnel section
- Who
- Hankou Tunnel
- What
- 4,411.707 metre(s)
- Where
- China (Xinxiang, Henan, China)
- When
- 15 May 2024
The longest spiral road tunnel section measures 4,411.707 m (14,474 ft 1.2 in) and was achieved by Hankou Tunnel, constructed by CSCEC Road and Bridge Group Co., Ltd. (China) in Xinxiang, Henan, China, on 15 May 2024.
Hankou Tunnel was constructed since June 2020, completed in December 2022 and opened to public in March 2023. There are 1 left and 1 right tunnel serving for two directions. The final result got from the average length of the right and left tunnels.