An engineer left a voicemail two days before a catastrophic bridge failure in Miami to say some cracking had been found at one end of the concrete span, but the voicemail was not picked up until after the collapse, Florida Department of Transportation (DoT) officials have said.http://www.heraldscotland.com/news/16094362.Engineer_left_voicemail_about_cracks_two_days_before_bridge_fell__say_officials/