The Francis Scott Key Bridge in Baltimore collapsed early Tuesday morning after it was struck by a large ship, according to video obtained by CNN.
All traffic is being detoured due to an “incident”, the Maryland Transportation Authority (MTA) said on social media.
It is unclear if anyone was injured.
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CNN has reached out to the Baltimore City Fire Department for additional information.
The ship is believed to be a Singaporean container ship named Dali.
Dali can be seen stopped underneath the Francis Scott Key Bridge on maritime data platform Marine Traffic.
The ship is 299.92m long and 48.2m wide and was leaving Baltimore for Sri Lanka.
The Francis Scott Key bridge was originally known as the Outer Harbor Crossing and extends over the Patapsco River.
It is a 1.6-mile (2.5km), four-lane bridge.
It serves as the outermost crossing of the Baltimore harbour and an essential link of Interstate-695, or the Baltimore Beltway.
Its namesake, Francis Scott Key, is believed to have sat near the site of the bridge as he witnessed the bombardment of Fort McHenry in 1814, inspiring him to write a poem entitled “Defence of Fort M’Henry” which would go on to form the lyrics of the US national anthem “The Star-Spangled Banner”.
More to come …
– with CNN