I guess local concern, and an actual issue between the retailer and the council / road management, are two different things.
Other retailers manage fine there, with deliveries etc. Hardly the first location on a busy road to get deliveries after all.
Guess its wait and see now. For it to open on the 29th, I am sure the work will start soon. In fact for a date to have ever been set, I would think most issues would have been considered and overcome.
I know someone who will be delighted for it to open!