They are putting new drains in our street...
The old ones are full of shite and rather than clean them out they have decided to put new ones in - money being no object and everything...
So they dig up the road and put the new pipes in - they sit them on a bed of gravel then pour concrete over them to seal them up...
They have worked all the way up the street - filling in behind them as they go. Now all they have to do is connect the new drain to the old one that continues on up the road...
Oh...
Good job the Channel Tunnel diggers were a bit more accurate....