[US] Baltimore bridge collapses into river after being hit by cargo ship

Text summary (for those who don't want to watch a 30 min video).
abcnews.go.com

NTSB recommends vulnerability assessments on 68 bridges following Key Bridge collapse

The bridges include iconic landmarks such as the Golden Gate Bridge, the Chesapeake Bay Bridge, the Brooklyn Bridge and the Mackinac Bridge.
abcnews.go.com abcnews.go.com
If the Maryland Transportation Authority had conducted a vulnerability assessment, it "would have known the risk and could have taken action to safeguard the Key Bridge," Homendy said during a press briefing announcing the recommendation.
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The Federal Highway Administration started requiring vulnerability assessments of new bridges in 1994, the NTSB said. The Key Bridge was built before that requirement.

The 68 bridges that the NTSB recommends for assessment are those designed before the guidance was established and do not have a current vulnerability assessment, the NTSB said.
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They include iconic landmarks such as the Golden Gate Bridge in California, the Chesapeake Bay Bridge in Virginia, the Brooklyn Bridge in New York and the Mackinac Bridge in Michigan.

"Today's report does not suggest that the 68 bridges are certain to collapse," the NTSB said in a press release Thursday. "The NTSB is recommending that these 30 bridge owners evaluate whether the bridges are above the AASHTO acceptable level of risk. The NTSB recommended that bridge owners develop and implement a comprehensive risk reduction plan, if the calculations indicate a bridge has a risk level above the AASHTO threshold."
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