Last year Bend voters approved a $30-million bond measure to fund local road improvements throughout the city.  The General Obligation, or “GO” Bond kicks into high gear with the groundbreaking ceremony for the new roundabout at Mt. Washington and Simpson.  City spokesman Justin Finestone says they decided to make it a celebration.  "We're going to have a little groundbreaking with City Council and some of the other folks that helped make it happen to kind of commemorate the kick off of the GO Bond construction.  The “Summer of the Three Roundabouts” that were approved by voters and then next year you'll start seeing the Reed Market construction taking place so, it’s just kind of a thank you to the community for approving this and we want people to know that the projects are on time and on budget and underway."  Finestone says people will begin seeing the detours tomorrow.  You can see the detour maps on the City of Bend website.  The groundbreaking ceremony is Wednesday at 9 a.m. at the site on Mt. Washington and Simpson.