Unstable concrete slab forces evacuation of San Francisco buil...

BREAKING NEWS: Multiple offices in San Francisco's SoMa District are being evacuated due to the risk that a 30 to 40-foot concrete slab weighing 2,000 pounds might fall from a skyscraper. Major traffic impact: http://abc7ne.ws/2kUbvL3

Posted by ABC7 News on Wednesday, February 15, 2017