the Double Arch, suddenly collapsed on Wednesday, the National Parks Service said. Also known as the Toilet Bowl and the Hole in the Roof, the natural structure is located in Utah’s Glen Canyon ...

Centering under construction Constructing an arch bridge can be tricky, since the structure is completely unstable until the two spans meet in the middle. One technique is to build elaborate ...

Engineers at The Hong Kong Polytechnic University (PolyU) have developed an innovative welding technology that makes it ...

The closure of a 600-year-old bridge is causing headaches for motorists and residents - but worse may be yet to come with ...

Age, unstable rock formations, and harsh weather exposure have compromised a bridge from 1908 in New York’s Watkins Glen State Park. Now, Snøhetta and schlaich bergermann partner (sbp) are ...