Follow CBSMIAMI.COM: Facebook | Twitter

MIAMI (CBSMiami) — A construction worker was thrown off the Dolphin Expressway (SR-836) overpass Wednesday morning, while at work.

READ MORE: Florida Poised To Revamp Civics Education

Florida Highway Patrol said the worker was operating a crane from outside when it flipped, throwing him onto NW 37th Avenue which was below the overpass.

READ MORE: Miami-Dade AT&T Call Center Evacuated After Bomb Threat

Crews have since taken him to Ryder Trauma Center in critical condition.

MORE NEWS: Florida School Quarantine Rule Could Be Extended

The cause of the construction site accident is under investigation.