Arch bridges are one of the oldest types of bridges ... the stones in the rest of the structure stay together by the sheer force of their own weight. The New River bridge Today materials like ...

The Upper Steel Arch Bridge, also known as the Honeymoon ... at 4:20 p.m., thousands of stunned onlookers watched as the bridge succumbed to the force of the ice and plunged into the Niagara ...

Arch bridges are one of the oldest types of bridges ... the stones in the rest of the structure stay together by the sheer force of their own weight. The wooden rainbow bridge depicted in this ...