U.S. 285 between Eaglecliff Road and Dallman Road was still closed as of 3:30 p.m. Thursday following a deadly crash that killed a 22-year-old male.

Around 11:30 a.m. Thursday, a Colorado Department of Transportation vehicle and a 20-foot box truck collided near mile marker 237, according to Colorado State Master Trooper Gary Cutler.

Cutler was unsure exactly what type of vehicle the CDOT driver was operating, but confirmed the driver was uninjured.

The box truck’s driver has not yet been identified, and Cutler added that the cause of the crash is still under investigation.  More information is expected to be released Friday.