How many tunnels are there from Changchun to Tonghua Expressway?

There are three tunnels from Changchun to Tonghua Expressway. Changchun-Tonghua Expressway is about 160 km long. There are three tunnels in Changtong Expressway, namely Yalu River Tunnel, Pudonggou Tunnel and Dongfang Sheng Tunnel. Yalu River Tunnel is the longest tunnel in the whole line, about 6. 176 km long, and it is one of the longest highway tunnels in Northeast China. Pudong ditch tunnel is about 3.188km long, and Dongfang Sheng tunnel is about 65438km long. Therefore, the three tunnels from Changchun to Tonghua Expressway were all built to cross Changbai Mountain. For the convenience of driving, these tunnels are all two-way four-lane design, with spacious roads and high safety performance.