The entire length of the Francis Scott Key bridge and roadway needs to be shut down until engineers can determine any damage due to transmitted vibrations with the collapse.
Route all traffic away from the area. The port isn’t going to be usable until any and all rescue is conducted. It is going to be awhile. This is a tragedy to many people as well as the country, but, the immediate safety issues have to be addressed. A full complement of emergency workers are not readily available at this hour.
Baltimore may need help from surrounding towns and cities. This is a major infrastructure tragedy. Route ship traffic away from the waterway.