Hydrogen found in damaged Bay Bridge steel rods

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OAKLAND, Calif. (AP) — Tests have discovered hydrogen in some of the damaged steel rods on the new eastern span of the San Francisco-Oakland Bay Bridge, an indication of weakness in the metal.
The San Francisco Chronicle reports that California Department of Transportation officials discovered the snapped rods two weeks ago on the $6.4 billion span.
The rods, which are essentially giant bolts, are being used to connect steel earthquake safety devices called shear keys to the bridge's deck and a large concrete cap.
Caltrans officials acknowledged there is a risk that the problem could delay the bridge's opening over Labor Day weekend.
Still, the agency says the project is currently on track.
Tony Anziano, Caltrans' toll bridge program manager, said it could take one-to-two months to complete the repairs.