The search for survivors has been called off after a cargo ship crashed into a bridge in the US city of Baltimore, causing it to collapse into the local harbour.nSix people are missing, presumed dead in the freezing water.nBut authorities say many lives were saved thanks to a mayday call that gave them precious time to close the bridge to cars.nnSubscribe: https://ab.co/1svxLVEnRead more here: https://www.abc.net.au/news/2024-03-27/baltimore-bridge-collapsed-in-30-seconds/103638806nnABC News provides around the clock coverage of news events as they break in Australia and abroad, including the latest coronavirus pandemic updates. It's news when you want it, from Australia's most trusted news organisation.nnFor more from ABC News, click here: https://ab.co/2kxYCZYnWatch more ABC News content ad-free on ABC iview: https://ab.co/2OB7Mk1nnGo deeper on our ABC News In-depth channel: https://ab.co/2lNeBn2nLike ABC News on Facebook: https://facebook.com/abcnews.aunFollow ABC News on Instagram: https://instagram.com/abcnews_aunFollow ABC News on Twitter: https://twitter.com/abcnewsnnNote: In most cases, our captions are auto-generated.nn