78.2 percent of a 117.5 km expressway is bridges and tunnels! The Bashan Expressway, with its 55 bridges and 20 tunnels, was officially opened to traffic on November 22, shortening the journey between Bazhong, Southwest China’s Sichuan Province, and Hanzhong, Northwest China’s Shaanxi Province, from 3.5 hours to 1 hour.