5/24: I-5 bridge collapses north of Seattle; "On the Road": Three siblings survive Okla. tornado

      |A section of the Riverside Bridge, which carries traffic along Interstate-5 near Seattle, collapsed after a truck hit an overhead beam, plunging vehicles into the Skagit River below; and "On the Road," Steve Hartman reports on three siblings who survived the Okla. tornado that destroyed their home and elementary school. But they said that's the only thing left in the house that matters is their dog. actually, change Riverside Bridge in the dek for "I-5"

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