The News 13/07/2026
TIANSHAN SHENGLI TUNNEL — CHINA'S LONGEST MOUNTAIN-CROSSING WONDER IN THE WORLD
The Tianshan Shengli Expressway Tunnel cuts through the Tianshan Mountains in Xinjiang, China Over the past many decades, China has continuously made its mark on the global infrastructure map with projects of a scale and technical difficulty rarely matched elsewhere—ranging from the Three Gorges Dam and the high-speed rail network to the tallest canyon bridges on the planet. Continuing this streak of achievements, at the end of December 2025, the country officially opened the world's longest expressway tunnel to traffic: the Tianshan Shengli Tunnel, which cuts directly through the heart of the rugged Tianshan Mountain range in the Xinjiang Uygur Autonomous Region. Far more than a simple transportation project, this tunnel stands as a symbol of China's mastery over tunneling technology in high-altitude terrain and among the most complex geological conditions in the world. For centuries, traveling between Northern and Southern Xinjiang remained an arduous journey, heavily reliant on winding mountain passes and subject to extreme weather. This article provides an overview of the scale, technical specifications, prominent construction challenges, and the economic and social significance of the project, highlighting the stature of one of the most remarkable transport infrastructure projects in the world today.