A Boone County woman was killed in a two-car wreck on an icy bridge in central Iowa Tuesday.31-year-old Kathy Boersma-Mendenhall of Ogden died after a collision on an icy bridge near Boone. Two other people were injured.An elderly Manchester woman died in a one-car wreck in Delaware County. 78-year-old Helen Klosterman died late Tuesday afternoon after her car ran off a Delaware County road and hit a house.