bfginger:This upgrade is going to remove a lot of our privacy, increase traffic noise and place the bedroom windows right over the main road. The house is raised (single story), so the windows are easily above any legal fence height.
It should be possible to reduce traffic noise by installing double glazed windows with sound control glazing. Installing batts in the walls would go a long way to reducing traffic noise if you don't have wall insulation.
I know for a fact that when Mana Esplanade (Porirua) was widened the residents got double glazing thrown in to reduce road noise.