 County 9 Bridge near Mankato, Minnesota, has been closed since Monday morning. It's near a dam. Rushing water from the recently flooded Blue Earth River is washing away sediment the bridge pilings are pounded into. As the river's lowering itself down and washing away tremendous amounts of sediment, we're losing stability. Blue Earth County Public Works Director Ryan Tilger says there's not much they can do about it. Minnesota Governor Tim Walz says he thinks it'll turn out the 40-year-old bridge is structurally damaged and will need to be replaced.