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A loose signal wire has been identified as the cause of the Baltimore bridge collapse that occurred on March 26, 2024. The National Transportation Safety Board issued its findings on Tuesday, indicating the Maryland Transportation Authority failed to assess whether the Francis Scott Key Bridge could withstand a ship strike.
The incident involved the cargo ship Dali, which lost power before crashing into a support pier of the bridge, leading to a portion of the structure collapsing into the Patapsco River. This catastrophic event has drawn attention to critical gaps in safety protocols.
The NTSB concluded that a single misinstalled wire resulted in a total blackout that left the Dali without propulsion or steering just moments before the collision. If Maryland had adhered to prior safety recommendations, the tragic event might have been avoided.
The report stated, “The probable cause of the contact of the container ship Dali with the Francis Scott Key Bridge was a loss of electrical power blackout due to a loose signal wire connection to a terminal block stemming from the improper installation of wireless label banding.”
Reports confirm that the crew aboard the Dali acted promptly in response to the blackout. However, they lacked sufficient time to restore power before the vessel collided with the bridge. The ship was too close to the structure, and systems failures delayed recovery efforts, making the accident unavoidable.
Investigators criticized the Maryland Transportation Authority for not conducting vulnerability assessments. These assessments are vital for identifying necessary measures to protect bridges from potential strikes by large vessels. Recommendations for these evaluations have been made by the American Association of State Highway and Transportation Officials over the years.
The NTSB highlighted that a lack of countermeasures contributed significantly to the bridge’s vulnerability. Had Maryland executed the vulnerability assessment as recommended, protective strategies could have been implemented to minimize the risk of such an impact.
Engineers provided testimony indicating that the Dali’s crew had misused a flushing pump as a service pump. This mismanagement was unaddressed by the vessel’s operator, Synergy Marine Group, which limited the ship’s ability to recover power following the blackout.
The NTSB noted that Synergy allowed critical electrical systems to operate in manual mode rather than the automatic setting. This decision hampered recovery efforts significantly after the power failure, leading to the disastrous collision.
NTSB engineer Bart Barnum commented on the inadequate operational oversight provided by Synergy, stating, “Staff found that Synergy operational oversight was inadequate because it did not discontinue the crew’s ongoing use of the flushing pump as a service pump for the diesel generators aboard the Dali, and at least one other vessel.”
Further complicating the situation, communication failures impeded timely warnings to highway workers. As a result, those personnel had no chance to evacuate the area before the bridge’s collapse. These errors exemplify the cascading failures that enabled the disaster.
The NTSB’s findings surfaced on the heels of Maryland officials announcing that rebuilding the Francis Scott Key Bridge will be delayed two years longer than anticipated and will cost more than double the initial estimates. Originally projected at $1.9 billion, state engineers now estimate the total reconstruction expense could reach $5.2 billion, with completion expected in 2030.
Jim Harkness, the Maryland Transportation Authority’s chief engineer, revealed that inflation and various market factors are driving this steep increase in costs. Estimating expenses for large infrastructure projects presents immense challenges, often compounded by shifts in the economic landscape.
Transportation Secretary Sean Duffy had previously suggested that the final reconstruction costs could be “double plus” the initial budget once federal dollars were allocated. This prediction appears to align with the latest financial assessments.
The NTSB’s findings illustrate a complex tapestry of failures, ranging from a single faulty wire to years of neglected safety protocols. This tragedy has become one of the most consequential infrastructure disasters in Maryland’s history, prompting urgent calls for enhanced safety measures across the state.
As Maryland embarks on plans to rebuild the bridge, the protracted timeline and escalating costs will likely have long-term repercussions on the region’s economy and public infrastructure. This event serves as a sobering reminder of the importance of stringent assessments and proactive safety measures to prevent future catastrophes.
This report incorporates contributions from Fox News Digital reporter Anders Hagstrom.