Caltrans says there shouldn't be any more closures this weekend.
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They replaced a metal plate on the upper deck with a bigger one to provide a little more protection for the roadway.
Work on a permanent repair will start on Monday as long as the weather cooperates.
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Concrete fell onto the lower deck on Thursday, striking at least one car and shutting down the bridge for hours.
See more stories and updates about the concrete concerns on the Richmond-San Rafael Bridge.