A highway bridge in Missouri collapsed Sunday morning after two freight trains collided, which took place just days after the Interstate 5 bridge over the Skagit River in Washington state collapsed. These incidents serve as a reminder that thousands of bridges across the country could be at risk of collapse from "one freak accident or mistake," according to The Associated Press. "Today, they're still building fracture critical bridges with the belief that they're not going [to] break," said Mark Rosenker, former chairman of National Transportation Safety Board. Meanwhile, the collapsed portion of the I-5 bridge is slated to have a temporary replacement by mid-June and a permanent span is scheduled to be in place by early autumn.

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