File:New Navy 3D sonar images reveal striking details of Baltimore's Francis Scott Key Bridge wreckage site (240409-N-QH057-1101).jpg

English: This sonar CODA image, provided by the U.S. Navy’s Naval Sea System Command (NAVSEA) Supervisor of Salvage and Diving (SUPSALV), shows bridge wreckage in the deepest part of the federal Port of Baltimore Shipping Channel, and one of the Francis Scott Key Bridge main supports. One of the two Temporary Alternate Channels (far-right) became operational about a week after the incident to accommodate empty barges, small tugboats and survey vessels. The metal tress framework (center of image) is currently slated to be removed by the end of April, making way for a 35-foot-deep by 280-foot-wide Limited Access Channel. The Limited Access Channel will permit larger vessels to transit in and out of the Port of Baltimore, such as marine tugs, Maritime Administration (MARAD) vessels and those used for Roll-on/Roll-off (RoRo) shipping. The numbers marked in this image (center-left) are representative of depth of the existing federal channel, as well as the clearances from the top of bridge wreckage to the surface of the Patapsco River. These measurements are critical for the U.S. Army Corps of Engineers to plan for ongoing wreckage removal and potential dredging operations needed to return the federal channel to a minimum depth of 50 feet and width of 700 feet. The Unified Command is continuing efforts in support of removing the M/V Dali, which is required to fully re-open the Fort McHenry Channel. Key Bridge Response 2024 Unified Command photo.