AUSTIN (KXAN) — A driver died after crashing into a construction site on MoPac Expressway Tuesday night, injuring at least four workers, one critically.

Austin-Travis County EMS says the driver was pronounced dead at the scene. Austin Police initially said five workers were hurt, but EMS says they only took four workers to the hospital.

Two patients were taken to St. David’s in Round Rock—one with critical, life-threatening injuries and the other with potentially serious injuries. Two others were taken to Dell Seton Medical with serious injuries, EMS says.

The accident happened on the southbound lanes of North MoPac Expressway near the Parmer Lane exit in northwest Austin just after 9:45 p.m.

MoPac was closed in that area for hours but has since reopened.