A Texas construction worker had to have his leg amputated to free him after he was caught in the blades of a trenching machine Thursday, Dallas.com reported.

A surgeon was flown to the construction site after first responders were called to the scene shortly before 9 a.m., KTVT reported.

Firefighters called for a surgeon when they were unable to free the man, Frisco Fire Department spokesman Kevin Haines said.

The worker, who was not identified, was flown a hospital in Plano for further treatment, Dallas.com reported. His injuries were characterized as severe but he was expected to survive, KDFW reported.