Key Bridge controlled demolition postponed due to weather

The controlled demolition of the largest remaining steel span of the collapsed Francis Scott Key Bridge in Baltimore has been postponed because of weather conditions, officials said Sunday afternoon.

Crews have been preparing for weeks to use explosives to break down the span, which is an estimated 500 feet (152 meters) long and weighs up to 600 tons.

It landed on the ship's bow after the Dali lost power and crashed into one of the bridge's support columns shortly after leaving Baltimore. Since then, the ship has been stuck amidst the wreckage and Baltimore's busy port has been closed to most maritime traffic.