The Spark Bridge Project of MCC Guizhou Ziwang Expressway is built along the mountain, with a total length of 4.075km. It is a "network red" expressway that can turn around and get on the hot search list.

With the help of deep pile foundation drilling, high pier wall climbing and other technologies, MCC Guizhou supports this mountain harp with 330 piano string like piers. The highest pier is 107.5 meters, which is equivalent to more than 30 floors. Among them, 64 piers are built on the hillside of 70 ° steep slope, and the maximum height difference between them is even 80 meters.

Both sides of the bridge are cliffs and cliffs, which cannot be connected with other roads. MCC Guizhou cooperates with the valley to connect the left and right sides of the road by virtue of the technology of large corner+double guide beam bridge erecting machine refitting. A U-shaped lute with a curve radius of only 55 meters is "bent" on the bridge deck, playing the music of rural revitalization with a dangerous, wonderful and steady turn around.Editor/Ma Xue