Details have emerged from emergency radio recordings of the moments authorities were alerted that the cargo ship that knocked down a highway bridge into Baltimore Harbour was drifting out of control.
“Hold all traffic on the Key Bridge. There’s a ship approaching that just lost their steering,” someone is heard saying over a police radio.
While voices were heard discussing next steps, including alerting any work crews to leave the bridge, one broke through to say: “The whole bridge just fell down!” The audio was carried by the public streaming service Broadcastify.
The pilot of the Dali cargo freighter that knocked down a highway bridge into Baltimore Harbour had radioed for tugboat help and reported a power loss minutes earlier, federal safety officials have said, citing audio from the ship’s “black box” data recorder.
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The head of the National Transportation Safety Board (NTSB) also said that Francis Scott Key Bridge, a traffic artery over the harbour built in 1976, lacked structural engineering redundancies common to newer spans, making it more vulnerable to a catastrophic collapse.
New insights into the fatal disaster emerged after the massive Singapore-flagged container shipsailing out of Baltimore Harbour bound for Sri Lanka reported losing power and the ability to manoeuvre before ploughing into a support pylon of the bridge.
The impact brought most of the bridge tumbling into the mouth of the Patapsco river almost immediately, blocking shipping lanes and forcing the indefinite closure of the Port of Baltimore, one of the busiest on the US Eastern Seaboard.
Divers on Wednesday recovered the remains of two of the six workers missing since the crumbling bridge tossed them into the water, officials said on Wednesday.
Maryland state police colonel Roland Butler said a red pickup truck containing the bodies of the two men was found in about 7.62m of water near the midsection of the fallen bridge.
He also said authorities had suspended efforts to retrieve more bodies from the depths due to increasingly treacherous conditions in the wreckage-strewn harbour. Mr Butler said sonar images showed additional submerged vehicles “encased” in sunken bridge debris, making them difficult to reach.
The two men whose bodies were recovered on Wednesday were identified as Alejandro Hernandez Fuentes (35), of Baltimore, a native of Mexico, and Dorlian Ronial Castillo Cabrera (26), of nearby Dundalk, originally from Guatemala.
Four more workers who were part of a crew filling potholes on the bridge’s road surface remained missing and presumed dead. The six also included immigrants from Honduras and El Salvador, officials said.
Rescuers pulled two workers from the water alive on Tuesday, and one was hospitalised.
The economic fallout from the incident could be staggering. The port handles more automobile and farm equipment freight than any other in the country, as well as container freight and bulk goods ranging from sugar to coal.
US transportation secretary Pete Buttigieg said 8,000 jobs are “directly associated” with port operations, which generate $2 million a day in wages.
But economists and logistics experts doubted the port closure would trigger a major US supply chain crisis or significant spike in the price of goods, due to ample capacity at rival shipping hubs along the East Coast.
The collapse, which occurred at 1:30am, has created a traffic quagmire for Baltimore and the surrounding region.
Earlier on Wednesday an NTSB team boarded the idled freighter, still anchored in the harbour channel with part of the mangled bridge splayed over its bow, to begin interviewing the ship’s two pilots and 21 regular crew members who remained on the vessel, safety board chief Jennifer Homendy said.
Investigators also began reviewing information collected from the ship’s Voyage Data Recorder, including radio traffic between the pilot and shore-based authorities leading up to the disaster.
The pilot was heard calling for tugboat assistance several minutes before the crash, the first indication of distress to harbour officials, followed by a radio report that the ship had lost all power and was approaching the bridge, NTSB officials said at a news briefing on Wednesday night.
Video footage that captured the crash show the ship’s lights winking off, then back on briefly before the vessel’s lights go out again.
Mr Homendy said recorder data was “consistent with a power outage” but that an actual blackout had yet to be confirmed.
The recorder also picked up commands to the crew to drop anchor, presumably aimed at slowing the vessel.
Safety board investigator Marcel Muise said data showed the Dali, measuring about three football fields in length and piled high with shipping containers, was moving at about 12.8km per hour when it struck a bridge abutment.
Mr Homendy noted that the bridge, while deemed to be in “satisfactory” condition from its most recent inspection in 2023, was constructed in such a way that failure of one structural member “would likely cause a portion of, or the entire bridge to collapse.”
The US Coast Guard’s first priorities are to restore the waterway for shipping, stabilise the crippled vessel and extricate it, vice admiral Peter Gautier said at a White House news briefing.
Of the ship’s 4,700 cargo containers, 56 hold hazardous materials but there is no threat to the public, Mr Gautier said. Two containers went overboard during the crash but they did not contain hazardous materials. The ship was carrying more than 1.5 million gallons of fuel oil, Mr Gautier added.
Mr Homendy said some of hazmat containers aboard the vessel had been breached and a sheen was noticed on the water’s surface. – Reuters