Engineers used high explosive charges to cut steel on the bridge truss resting on the bow of the MV Dali in the Patapsco River outside Baltimore Harbour, an important step towards a full reopening of the river.
The simultaneous explosion of the charges on Monday caused the majority of the truss to come apart and fall off the bow of the MV Dali and into the river. A part of the roadway remains on the ship, as do some of the steels, but whether these will be removed or taken with the Dali when it is floated off this month has not been revealed by the Baltimore authorities yet.
When the container ship struck the bridge in late March following what appeared to be a momentary total loss of power, bringing the structure crashing down in a rapid cascade failure, the remains of the bridge and the ship itself blocked the mouth of Baltimore harbour, one of the busiest American ports. While emergency shallow-draft channels have already been cleared around the epicentre of the disaster, the main Federal Channel which is deep-dredged to 50 feet for the largest visiting cargo ship remains blocked.
Maryland governor Wes Moore said in a statement before the blast that “we remain on track to reopen the full 50′ channel” and the demolition charges were intended to remove the pieces of bridge that “still needs to be removed in order for the Dali to be refloated so we can then continue the process of fully opening up the Federal Channel”.
Of the pace of work, Moore crowed about the speed at which the engineers were moving towards clearing the channel, which he said had confounded some who “looked at the complexity of this operation said this is going to take months to clear this channel”. Indeed, he said: “we are now very close to fully clearing the channel and we are already getting large ships in and out of the Port of Baltimore. And over the next week we are expecting about 30 vessels and barges at the port’s public and private terminals. Those vessels will include container ships, roll-on-roll-off ships carrying farm machinery and new cars, bulk ships carrying sugars, metals, and oil… we’ve been able to get it done in a matter of weeks.”
The Dali, which is aground, will now be refloated and moved by a flotilla of tugs back to the harbour wall, where its containers will be unloaded and initial repairs undertaken. It is likely to ultimately head to a ship yard for repairs so it can re-enter commercial service.
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