Arch bridges are one of the oldest types of bridges and have great natural strength. Instead of pushing straight down, the weight of an arch bridge is carried outward along the curve of the arch ...

The 400-foot-long, 80-foot tall, 2,500-ton arch bridge section was floated from a fabricating plant near Albany on a barge down the Hudson River and started making it way up the Hackensack River ...

and the three bridges had been restored by inheritors, many of whom were Dong's students. Zhong (right) and Zeng Jiakuai, a provincial level inheritor of wooden arch bridge building techniques.

Arch bridges are one of the oldest types of bridges and have great natural strength. Instead of pushing straight down, the weight of an arch bridge is carried outward along the curve of the arch ...