I must say I have been wondering why the work was done so early on only to be left empty for a couple of years.
I'm sure there are good reasons though.
Maybe to do with workforce being required elsewhere at the crucial moment, or to do with site access being difficult while other works are taking place nearby.
Or maybe the bridge needs time to bed-in or something weird like that?
Or maybe, given all the controversy, there was a keenness to get past the point of no return before permission was revoked?
These are all just wild guesses of course.
A combination of all of the above, except the bedding in one.
It would, of course, have been very difficult for a politician to try and cancel the project with an unused viaduct (complete with 300mm ballast depth) for all to see on google maps.