Girders Give Edmonton Bridge Team Big Headache
![Steel Problems Cited in 12-Month Delay of Edmonton Arch Bridge](https://www.enr.com/ext/resources/archives/infrastructure/transportation/2015/extras/0420/2.jpg?t=1446043632&width=1080)
2 A.M. A jobsite camera captured the minutes before and the girders buckled on the Edmonton bridge.
Photos courtesy of EarthCam
![Steel Problems Cited in 12-Month Delay of Edmonton Arch Bridge](https://www.enr.com/ext/resources/archives/infrastructure/transportation/2015/extras/0420/3.jpg?t=1446043632&width=1080)
2:15 A.M. The girders on the Edmonton bridge shown shortly after they buckled.
Photos courtesy of Earthcam
![Steel Problems Cited in 12-Month Delay of Edmonton Arch Bridge](https://www.enr.com/ext/resources/archives/infrastructure/transportation/2015/extras/0420/1.jpg?t=1446043632&width=1080)
Torsional buckling of girders is a common design criteria spelled out in a U.S. steel bridge design handbook. See the second and third images in the slide show for before and after the buckling.
Photos courtesy of Earthcam