Zhongnanshan Tunnel is An Engineering Marvel in China's Shaanxi Province

Located in the Qinling mountains, the Zhongnanshan Tunnel stands as a testament to modern engineering amidst China's scenic landscapes. Serving as a critical link between Xi’an and Ankang, it not only ranks among the world's longest tunnels but also plays a pivotal role in streamlining transportation within the region. It’s one of the longest tunnels in the world.

Zhongnanshan Tunnel

Key Facts and Figures

  • Length: The tunnel, known alternatively as the Qinling Zhongnanshan Tunnel, spans an impressive 18.02 km. Travelers can expect a 15-minute journey from one end to the other.
  • Status: As the longest tunnel in China, it proudly carries the distinction of being the country's premier two-tube road tunnel.
  • Inception and Costs: Inaugurated on 20 January 2007, this massive infrastructure project demanded an investment of 3.2 billion yuan (US$410 million).
  • Connectivity: The tunnel is a crucial component of the national highway that seamlessly connects Baotou in Inner Mongolia in North China to Beihai in the Guangxi Zhuang autonomous region in South China. Furthermore, it's worth noting that it operates as a toll road.

Innovative Design and Safety Features

Prioritizing driver safety, the tunnel boasts the world's most advanced lighting system, specifically designed for tunnels. This intricate system is characterized by:

  • Dynamic Lighting: The tunnel is adorned with lights displaying various colors and patterns. This dynamic interplay of lights is designed to keep drivers alert and reduce monotony during transit.
  • Visual Comfort: To combat visual fatigue, designers have incorporated artificial plants and captivating images of clouds that are projected onto the tunnel's ceiling. These elements not only enhance the driving experience but also ensure safer commutes.
  • Global Recognition: The tunnel's unique light belt has received accolades for being among the most advanced in the world, reflecting China's commitment to integrating innovation with infrastructure.


The Zhongnanshan Tunnel, with its blend of engineering brilliance and safety-centric features, is truly a modern marvel in China's vast network of roads. Whether you're an infrastructure enthusiast or a traveler seeking faster routes, this tunnel promises efficiency, safety, and a unique journey through the heart of the Shaanxi province.
Pic: http://www.aydinlatma.org/wp-content/uploads/Zhongnanshan-Highway-Tunnel-2.jpg