Crews prepare for controlled demolition at bridge collapse site

Salvors with the Unified Command prepare charges for upcoming precision cuts to remove Section 4 from the port side of the bow of the Dali container ship (Christopher Rosario/US Army Corps of Engineers via AP)

After weeks of preparation, crews are scheduled to conduct a controlled demolition on Sunday to break down the largest remaining span of the collapsed Francis Scott Key Bridge in Maryland.

The structure came crashing down under the impact of a massive container ship on March 26.