DOUGLAS COUNTY, Ore. -- The northbound I-5 exit at milepost 112 was closed for a time, after a semi truck and passenger vehicle were involved in a crash.
As crews were cleaning it up, the call came out for another crash, this time on the southbound side.
The first crash happened around 11:30 am, when a semi truck collided with a Dodge passenger car.
Sgt. Matt Bowersox from the Oregon State Police told KPIC News at the scene that the car was occupied by two teens from California, both of whom were taken to Mercy Medical Center for treatment.
The 17-year-old driver was later taken to Sacred Heart at RiverBend in Springfield.
Officials say it appears the semi, driven by Stanley McHugill, 63, of Sutherlin, struck the the Dodge Stratus after its driver, Natasha Hastings, 17, of Redondo Beach, California, ran a stop sign and drove into the path of the semi.
Hastings was not using safety restraints and received serious injuries. She was extricated by firefighters and initially transported by ambulance to Mercy Medical Center in Roseburg, then transferred to Sacred Heart Medical Center at RiverBend in Springfield.
Hastings is currently listed in critical condition.
The 18-year old female passenger, Gabrielle Swain, also from Redondo Beach, was using safety restraints and received minor injuries.
Exit 112 was closed during the extrication and cleanup of the accident.
As crews were taking care of that wreck, the call came out for another motor vehicle accident, this time on Robert's Mountain.
Authorities say Jennifer Geho, 53, of Roseburg, was pulling a 26' travel trailer with an SUV, when it began to fishtail, and struck a semi in the southbound lanes near milepost 116.
The accident left the trailer laying on its side in the slow lane.
The Geho was transported to Mercy Medical Center with minor injuries, and the driver of the semi in that crash was uninjured, according to troopers on the scene.
Reports have also come in about an accident on Hwy 42, near the 119 interchange. Oregon State Police are expected to release more information on that crash later today.
Officials are urging people to use caution if traveling through the area.