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US board determines cause of deadly Maryland bridge collapse

Tuesday, the National Transportation Safety Board (NTSB) will hold a hearing to determine the probable causes of the collapse of Baltimore’s Francis Scott Key Bridge in March 2024 that was caused by the cargo vessel Dali. Six people were killed. The board was prompted by the incident to demand urgent safety assessments for 68 bridges across 19 states, including iconic crossings such as the Golden Gate Bridge. Chesapeake Bay Bridge. Brooklyn Bridge. and George Washington Bridge. The review is focused on bridges that were built before 1991, and are frequented frequently by ocean-going ships. These bridges have not been subjected to vulnerability assessments. The May crash of a Mexican Navy Training Ship into the Brooklyn Bridge raised concerns over bridges being damaged by vessels.

The Dali experienced a blackout several times prior to the crash, including during port maintenance and just before the crash.

The NTSB is considering new recommendations for preventing catastrophic collisions when power outages occur at sea.

The NTSB reported that last year, the Dali cargo vessel experienced other power outages. About four minutes prior to the crash, electrical breakers tripped unexpectedly and caused a loss of all shipboard equipment including lighting. This occurred when the ship was only 0.6 miles (1 km) away from the bridge. The initial estimate was that a replacement bridge would cost between $1.7 billion and $1.9 billion, with completion expected by the end of 2028. State officials announced on Monday that they expect the bridge to cost between $4.3 billion and $5.2 billion, with traffic opening only in late 2030. The increased cost was attributed to a new pier-protection system and a longer, more complex design.

Maryland Governor Wes Moore expressed disappointment over the slower rebuilding schedule.

Sean Duffy, the U.S. Transportation secretary, raised concerns in September about the cost of the project.

The FBI began a criminal investigation into the collapse in April 2024. (Reporting and editing by Lincoln Feast; Reporting by David Shepardson)

(source: Reuters)