Fuwenxiang, Zhejiang, China
318 feet high / 97 meters high
827 foot span / 252 meter span
Qiandao Lake has become one of the most popular recreation spots for citizens of Hangzhou city who want to enjoy a weekend away from the hectic urban noise and congestion. An extension from the main S31 expressway was opened in 2005 allowing quicker access to the many hotels and resorts that line the edges of the man-made Xin'anjiang reservoir.
The 4-lane S32 expressway spur crosses a now submerged creek via a 1.34 kilometer viaduct with a 252 meter long CFST arch in the center. Once the arch was closed, concrete was pumped into the main rib tubes from the bottom up. Once hardened, the concrete solidifies and stiffens the arch, improving the compressive strength of the entire structure. First used by the Chinese in 1990, they have refined and improved the technique and now use it on the majority of their steel arch bridges.
An extradosed bridge was also studied for the Qiandao Lake crossing with a main span of 125 meters.
Qiandao Lake Bridge drawing.
Qiandao Lake Bridge elevation drawing.
Qiandao Lake Bridge extradosed proposal elevation drawing.
Qiandao Lake Bridge cross section.
Qiandao Lake extradosed bridge proposal cross section.
Qiandao Lake Bridge satellite image.
Qiandao Lake Bridge location map.