The bridge located on the river within the Ningbo Campus of Zhejiang University connects the teaching area with the living ...

That was the case in Amsterdam, a city famous for its canals, where in 2021, the world’s first fully 3D-printed bridge was unveiled. For some, it was a remarkable technological achievement.

The discovery of the bridge challenges previously established timelines regarding human presence on the island. Earlier estimates suggested that humans arrived around 4,400 years ago.

Moving a bridge is far less practical, which means the 3D printing process must occur on the go. A technician readies several tanks of compressed gas before "printing" steel particles onto a bridge.