Follow CBSMIAMI.COM: Facebook | Twitter

MIAMI (CBSMiami) – Efforts continue to reopen a main roadway following last week’s deadly pedestrian bridge collapse.

READ MORE: Parkland Shooter Nikolas Cruz Pleads Guilty To All Counts In School Massacre

This took place on the edge of campus at Florida International University.

On Thursday officials released some of the chilling 911 calls made in the moments after the collapse.

READ MORE: 'We Want Him Dead, We Want Him Forgotten': Parkland Shooter Nikolas Cruz's Apology Falls Flat With Victims Families

The NTSB says workers were adjusting tension rods on the bridge when it crumbled to the ground.

Gallery: Scene of the FIU Bridge Collapse 

Six people were killed and several others wounded.

MORE NEWS: Jason Banegas, Accused Of Killing Hollywood Officer Yandy Chirino, Has Extensive Arrest Record

The pedestrian bridge was intended to span busy Tamiami Trail between FIU and the neighboring city of Sweetwater.