Sidu River Ultra-large Bridge is located at the border of Yichang and En'shi in Hubei Province. This bridge is provided with a total length of 1365m, main span of 900m and bridge floor width of 24.5m. The respective height of the cable support pylons on the En'shi and Yichang banks is 118.2m and 113.6m. The height difference between the pylon top and canyon bottom is up to 650m. This bridge is renowned as the tallest suspension bridge in the world. .