Cracking concrete has plagued the Silver Spring Transit Center in Maryland, and now there are also "a structural integrity issue as well as a potential local safety issue for the general public," according to a report from an independent advisory committee. Interior beams and girders will need to be strengthened to prevent concrete chunks from falling off, the committee found, and that's a task that would add $7 million to the $120 million facility, and could further delay completion. Meanwhile, concrete remediation work will have to be deferred until the weather turns warmer.

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