Design of the Main Spans of the Chongqing Caiyanba Bridge

摘要

The new Caiyuanba Bridge over the Yangtze River in Chongqing will carry six lanes of highway and two pedestrian walkways on its upper deck as well as two tracks of mono-rails on its lower deck. It will serve as one of the transportation backbones for this ever-expanding city, connecting the two busiest business districts of the city: Yuzhong and Nanan. Because the bridge is located at the center of the city and is visible from most part of the city, aesthetics is a very important matter. After careful study of the location, a slender tied-arch was selected to carry the double level bridge girder over the Yangtze River. Upon completion, Its 420 m span will be the world's longest tied-arch span for combined rail and highway traffic. The side spans are 102 meters long.