Whether it's possible or sensible to keep units open depends on the kind of work that's being done and it seems the repairs there are to do with the structure of the bridge not the internal condition of the units. And they've still had to hoard off an area for storage of materials; I expect the businesses who usually have a view of the canal are affected by its position. A cursory google finds various tripadvisor complaints from tourists about the bridge being covered in scaffold at various points of time over the past year or so, and it looks like the works have been going on since the spring of 2015 and were supposed to have finished several months ago. Plus they are being funded through advertising revenue from billboards on the scaffolding apparently. Maybe Network Rail should have got in some luxury fashion brands to advertise on the hoardings; I'm sure that would have gone down well. I'm not sure I'd go to Italy to seek out exemplars of construction work carried out efficiently in transparent co-ordination between local government and private interests. Building works are slow and disruptive and there's only so much you can do to make them otherwise. If the hoarding around the arches sits there for a long time with nothing going on behind them then of course I agree that's no good. As discussed above, it seemed to me reasonable to assume that the hoardings have gone up to allow the site clearance to start whilst planning conditions are discharged prior to the main work starting. But we are told by an anonymous source, with access to information we aren't allowed to know about directly, that something more sinister is going on, so we'll just have to wait and see what the truth is.