Award of Merit Bridge/Tunnel: Nanjing Jiangxinzhou Yangtze River Bridge
The new bridge stretches across the Yangtze River in Nanjing, China. The 10.33-km project includes a 4.14-km bridge, the 1.75-km Jiajiang Tunnel and 4.4 km of other roadway sections with three lanes in both directions. The project was completed below budget and five months ahead of schedule by a large international team.
The environmentally friendly low-carbon construction included new industrialized technology to build one of the first full steel-concrete composite cable-stayed bridges in the world. Steel-shell processing and steel-bar installation were performed off site, reducing onsite labor by 70% and improving bridge construction efficiency by 75%. Coarse aggregate reactive powder concrete was chosen as the deck for the composite girder, which reduced its weight by 35%.