Quote:
Originally Posted by Innsertnamehere
Judging by the animations it will be concrete, and stay on a slant like that.
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I'd say the angles will be concreted as well.
There are quite a few structures in the Toronto area where the concrete down slopes surrounding the bridge abutment have been removed with the earth retained by a concrete wall in order to add additional lanes through the structure.
You can see how the bottom of the embankment was retained underneath of the structure here:
http://goo.gl/maps/KQKDV
In this case (this is the QEW/403 in Oakville), the structure was designed for an eight lane cross-section, but was not designed to be wide enough for the buffer zone between the HOV and general purpose lanes, the the concrete angles beside the abutments were modified with a vertical wall.