China's Multi-Layer Interchange With a Hidden Park Beneath

The largest and most complex overpass in China features five layers of interchanges, 11 ramps, and 8 exits, stretching 5,270 meters with a 55 meter height difference. A bus transfer station on top functions like a subway interchange, while a sizeable public park sits below, including a gym, basketball and tennis courts, and a green jogging path. Visitors reach the park from the bridge via multiple escalators. Construction began in 2014 and completed in 2016, driven by a 3D terrain model used for earthwork calculations and planning. The site is now a major traffic hub surrounded by mountains and greenery.