The woman who died was 21 years old, CSP tweeted. She was believed to be driving a 2012 white Mazda at the time of the crash.

KUSA — A fatal crash closed eastbound Interstate 70 at the Clear Creek Canyon exit for hours on Monday afternoon, causing backups in both directions.

Traffic was diverted onto U.S. 6 toward Golden, according to Colorado State Patrol.

The woman who died was 21 years old, CSP tweeted. She was believed to be driving a 2012 white Mazda at the time of the crash.

I70/Genesee Crash: 1 confirmed fatal, 21/female believed to be driver. 23/male transported to St. A's, believed to be minor injuries. Veh: 2012 white Mazda. Traffic diverted at MM 244 EB to H6, no ETA for reopening. pic.twitter.com/LaYX7mwHao — CSP Public Affairs (@CSP_News) September 10, 2018

Her passenger, who CSP identified as a 23-year-old man, suffered minor injuries and was taken to the hospital.

Traffic cameras spotted debris strewn across the highway. Details about what led up the crash are not known at this point.