One man died in a single vehicle crash Tuesday night on Interstate 84 near milepost 149 in Gilliam County.  According to the Oregon State Police, a preliminary investigation revealed that the car driven by 70-year-old Robert Cleveland of Rice, Washington was traveling eastbound on I-84 when it for an unknown reason left the roadway onto the right shoulder and rolled.  Cleveland sustained fatal injuries and was pronounced deceased.  The accident occurred at about 9:20 pm. Tuesday.  The OSP was assisted by the Oregon Department Of Transportation, Morrow County Sheriff’s Office and Gilliam County Sheriff’s Office.