A car and a motorcycle collided on northbound Interstate 805 in National City Saturday morning, prompting California Highway Patrol (CHP) officials to temporarily shut down part of the freeway.
The CHP said a SigAlert was in effect on northbound I-805 between 43rd and 54th streets as of 11 a.m.
Officials said a motorcyclist and driver crashed about 15 minutes earlier in the carpool lane. Both motorists were reportedly traveling at high speeds just before the collision, CHP officials said.
Passersby reported seeing tires and debris from the vehicles scattered along the freeway.
Officials said the motorcyclist sustained major injuries in the crash, though further details were not immediately available. The motorcyclist was transported to Scripps Mercy Hospital.
The lanes will remain closed until further notice, officials said. Drivers should expect delays and try to avoid the area. As of 11:30 a.m., traffic was backed up in the area and officials remained on scene investigating the accident.