WOWZERS... A left over bomb... that's crazy that they still find them...
That's nothing special, esp. in German cities, where there are several instances of discoveries of larger bombs per annum. Mostly deactivating goes smooth but in 2010 in Goettingen all three bomb disposal people died when the bomb exploded. In my native town of Nürnberg there was a maior bomb discovery almost every year over the past two decades (minor ones don't make it even into the press), and the city of Nürnberg has a well organized emergency plan for that. Three years ago a whole district had to be evacuated (12000 people) and since the defusing was trickier than usual people had to spend two nights in sport halls or at grandmas sofa.
I mean, what could possibly go wrong?
Well, just an example from my personal experience. a couple of years ago we were on our usual way to the ferry from Ancona to Patras and were just bypassing Munich when there suddenly was an announcement that the Brenner motorway would be blocked for the rest of the day due to a rock fall. Of course we decided to go via the Tauern motorway Salzburg-Villach-Udine, but that brillant idea was shared by too many other ingenious people. So we spent half a day on the Tauern motorway and an additional hour at the Italian motorway gate after Tarvisio, where not more than the usual two ticket booths were open. Luckily, we made it to our ferry in the very last minute.
BTW. The actual defusing on the Brenner route went uneventful and thanks to the early warnings by local authorities there have developed no maior traffic jams either.