16:54 Sep 25, 2009 

πλάκες πρόσβασης - I found "approach slabs" for this, and it led me to "superstructure slabs". I'm taking πλάκα in the construction sense of "concrete slab". My first thought was "plates", but these could well be concrete, where "slabs" is appropriate.
There's no doubt room for discussion on the precise meaning of ανωδομή, φορέας, φορέας ανωδομής in the context of bridges.

16:09 Sep 25, 2009 

it means the actual slabs where either the cars or people would walk on or drive on I am not sure that superstructure is the corect term
and I would use the term plates instead of slab

10:54 Sep 24, 2009 

Is there any other term for it, in the context of bridges?

That should be πεζοδρόμια above.