In message , Nick Leverton
writes

Aha, thanks. Not a view of it that I recall seeing before but it does
look a bit flimsy even in that picture.

There are pictures at platform level he

http://towerscj.files.wordpress.com/...-platform1.jpg
http://www.flickr.com/photos/markhillary/3556355647/

The second shows a permanent way building on the trackbed. This could be
moved, I guess, but the strength of the viaduct is the main issue.
--
Paul Terry