A severe accident occurred along northbound I-25 at Johnson’s Corner, in Colorado, about 8:30 a.m. Saturday. With a semi-truck to catching fire near the Campion turn off.

By Sunday officials had increased the number of vehicles involved to 50 including seven semi-trucks. One person suffered serious injuries but is expected to survive. Several  people were taken to the hospital with unknown injuries.

Northbound traffic on I-25 at Johnson’s Corner was closed for several hours.

See the aftermath here.