Investigators with the National Transportation Safety Board said Wednesday they had found design flaws in the bridge's gusset plates, which helped tie the steel beams together.

NPR: Officials Warn of Possible Flaw in Nation's Bridges

"Gusset plates have been around a long time, and they've been a reliable feature, and we have no indication that they've ever been part of a suspect bridge problem or a bridge failure before, " Capka said.

NPR: Officials Warn of Possible Flaw in Nation's Bridges

In 2003, unable to find a bra that would give her the smooth line she longed for, she took scissors to a pair of control-top pantyhose--cutting out the gusset and legs to create a makeshift bra that wouldn't be lumpy from the back.

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Richard Capka, administrator of the Federal Highway Administration, said Thursday that the agency would quickly advise transportation agencies around the country of steps they should take if a systematic problem with gusset plates was found, though he said no such advisory was yet in the works.

NPR: Officials Warn of Possible Flaw in Nation's Bridges