This time-lapse video shows the rotation of the tenth arch for the future West 7th Street Bridge in Fort Worth, Texas.
The actual time to rotate an arch from a flat to an upright position is approximately 3.5 hours; each arch weighs just over 3 tons.The crew rotated the tenth arch on January 18, 2013. The twelfth and final arch was rotated February 15. This video is part of a documentary in production depicting the design and engineering of this unique bridge.
There will be an article about this project in the May 2013 issue of Bridge design & engineering.
