It seems that this tradition in Russia is not so many years. Newlyweds began to hang the locks on the bridge fence recently. But the honeymoon was much more than a bridge. And soon, all steel railing like lurid Christmas trees. Locks were unable to cut off as on the fence there were new characters indissoluble union. The problem was solved quickly and, in my opinion, even elegant. On Luzhkov bridge, which is constantly exposed to the invasion of participants wedding entourage, installed metal tree.
For wedding rituals I'm a little condescending. But steel trees attract attention. And is this: you can endlessly examine different shapes and colors locks and names written on them.