Crews remove portions of the old Madison-Milton Bridge on Thursday. Parts of the truss directly on top of the piers must be removed before each of the two remaining span blasts take place. The 400-foot section closest to Madison will be exploded at 9 a.m. Thursday. Residents inside the 1,000-foot blast zone should stay indoors starting at 8:45 a.m. until the blast is completed. The Madison Courier will post a map of the blast zone at (Staff photo by Ken Ritchie/