(Portland, OR)  --  One person is dead and another seriously injured, following a single-vehicle crash in Northeast Portland.  Police say alcohol was believed to be a factor in the wreck that took place around three o'clock yesterday morning in the area of Northeast Columbia Boulevard and 33rd Avenue.  The car slammed into a large concrete pillar under the 33rd Avenue overpass.  The passenger, 19-year-old Alexandria Cooper, was ejected from the vehicle and died, and the driver is being treated for serious injuries.