The bridge is a remarkable piece of engineering in its own right. . .
. . .but the causeway is truly remarkable. Its size and layout, coupled with the difficulty of access to the surrounding land make it impossible to do justice to in a photograph, but I have found this video on You Tube, which I enjoyed - and not just because it features one of Arriva's double-decker buses! - and which might give you an idea of the fun I had walking across it pushing a broken-down bike yesterday!