Saturday, July 3, 2010

Cable-Stayed Bridges - North Arm Bridge (5)

A photo of Don Bergman from Buckland and Taylor standing in front of the North Arm Bridge. Although this extrados river crossing is an attractive structure I think the different supports and various transitions for the approach structures are a little awkward.

The designer was stuck with a 139 m side span in order to cross Mitchell Channel, the nearby airport restricted the height of the towers, and the shipping channel restricted the depth of the girders. This limited the length of the main span and made an extrados bridge the logical choice for this bridge site.
Creative Commons License
Cable-Stayed Bridges - North Arm Bridge (5) by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License.

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