Cul-de-sac

Our house is on a cul-de-sac. You can only exit the street one way. This is temporary, while the town is building a new water tower by oneend of the street. When going by car, we have a longer way than usual to get into the centre of the town. This temporary traffic solution has been here for a very long time now. I wonder when the street will be re-opened again by the new tower. It is strange that it must take such a long time to build the new water tower.