they've been hitting the other bridge with a hammer quite a bit this week so something might be happening??
Don't bank of that. The hammering is from the automatic, hydraulic hammering machine they've bolted to the main girders. It goes off in random bursts. The "workers" are in the adjacent hut, playing cards and gulping down the cheap Vodka!!
The bridge will be open for a week in March 2013, then closed again for an indefinite period whilst they rectify the bodge ups!