Here is a news release from the Portland Police Bureau:
Portland Police Investigating Overturned Truck on Columbia Blvd Exit From I-5 Northbound
This afternoon, Monday November 21, 2011, at 1:19 p.m., Portland Police responded to an overturned tractor-trailer on the Columbia Boulevard exit from I-5 northbound. Officers arrived and determined that the driver did not have any serious injuries but was transported to an area hospital for treatment.
The Columbia Boulevard exit from northbound I-5 is currently closed until tow and clean-up crews arrive to remove the truck and debris.