Rail bridge collapses during Midwest flooding as a heat wave persists across much of the US

A huge train bridge has collapsed in the Sioux City, Iowa, area during flooding in the Midwest that has led to evacuations and killed at least one person. Images from local media show a large span of the steel bridge partially underwater as floodwaters from the Big Sioux River rush over it. Heavy rain has caused flooding in South Dakota, Iowa, Nebraska and Minnesota. Entire neighborhoods and at least one whole town in Iowa have been evacuated. More rain is expected this week. Forecasters say a heat wave will continue early in the week in the Southeast, portions of the South and the Plains.