A woman died Sunday and another half-dozen people were seriously hurt in a multi-vehicle wreck on Interstate 70 at mile marker 259, near Morrison, that snarled eastbound traffic for hours.

According to Colorado State Patrol, the driver of a white pickup truck was headed west on I-70 when he crossed into the eastbound lanes and struck several other vehicles, including a Toyota 4Runner that was carrying the woman and a 17-year-old passenger.

The teenager was taken to a hospital, and he is expected to survive, police said.

Additionally, the driver of the pickup was taken to a hospital with what were described as serious injuries.

Altogether, seven people were hurt in the wreck, according to police, who are not yet releasing their names.

After the crash, I-70 was closed at mile marker 259 as crews worked to clean up the wreck. After a couple of hours, traffic was rerouted along the exit and entrance, but long delays remained.

Earlier in the day, at mile marker 259, CDOT also had a medical emergency shut down traffic on I-70 near the Eisenhower Tunnel in Summit County. However, neither a spokesman for Colorado State Police nor dispatchers with the Summit County Sheriff’s Office had any information about what kind of emergency it might have been or why it led to the closure of the intestate.