Who's stolen the bridge?

These pillars are what remains of a bridge for the London, Chatham and Dover Railway. From what I can make out, it was only built in the 1850's, was used for about 15 years before it was closed as it couldn't carry the weight of the "modern" trains. A common sight to a lot of Londoner's this perspective is what you can see from the north bank - the one less frequented.