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by Stratoscope
3923 days ago
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The new eastern span of the Bay Bridge is a similar example. They had to build a complete temporary bridge of iron girders to support the new roadway before the tower and cables were in place. (The bridge design didn't allow the tower and cables to be built first and then the roadway suspended like a conventional suspension bridge.) This page has a good video of the combined structure and the process of shifting the roadway load from the temporary bridge to the cables: http://baybridgeinfo.org/projects/sas The background image on the page is also nice, showing all three bridges together: http://baybridgeinfo.org/sites/default/files/images/backgrou... |
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