Round Rock Emergency Center is expected to break ground in November and open in summer 2016 at 1925 A.W. Grimes Blvd. The center will be a locally owned and operated free-standing emergency room. Round Rock Emergency Center will treat any ailment or injury treated at hospital emergency rooms. The owners previously opened the Cedar Park Emergency Center at 3620 E. Whitestone Blvd. Hours will be 24/7.