(Hamilton)--The Butler County Engineer's Office is planning over $20.2 million worth of capital improvement projects this spring and summer. The largest bridge replacement begins one week from today when crews close the Bonham Road Bridge near Yager Stadium in Oxford. Engineer Greg Wilkens says they also plan to construct a new roundabout at Cincinnati-Dayton and Kyles Station Road in Liberty Township. He says roundabouts dramatically improve safety statistics at problem intersections.