desperate search and rescue operation for survivors underneath this massive bridge in miami. we are in full search and rescue mode. we have multiple victims. the number hasn t been determined yet. reporter: multiple people killed, ten more transported to the hospital. first responders all day digging through the rubble, reaching under debris to find anyone trapped. just after 1:30 p.m., this 950-ton pedestrian bridge spanning a busy thoroughfare collapsing without warning in seconds. this is a bridge collapse. we have a report of several people inj aeduristht e. t collapse in front of me, and it fell on the cars that were sitting there waiting the for the light to change. reporter: pinning passing cars underneath, trapping drivers under the rubble. at least four cars under this bridge, three to four are going to be unobtainable at this time. reporter: taiona page said screams coming from the cars were terrifying. it felt as if there was an earthquake. i watched them try