When we talk about 3D printed bridges, they're usually made out of heavy construction materials, like concrete or steel. But recently, Tongji University's College of Architecture and Urban Planning (CAUP) unveiled the first robotic 3D printed bridges, which were made using modified plastic. The two black footbridges, which span 4 meters and 11 meters, graced the entrance of the exhibition hall on campus for this year's Digital FUTURE Shanghai Summer Workshop and Conference, which began on June 24th and ended on July 2nd. Read more at 3DPrint.com: http://3dprint.com/181596/3d-printed...ridges-tongji/