A 78-year-old man from Moses Lake is dead after crashing his motorcycle on Saturday. Police say Edward Wright was on I-90 westbound near Vantage when he crossed from the right to the left lane then went off the roadway. The motorcycle then struck an embankment which ejected Wright who died at the scene. The motorcycle was found about 100 feet away. Investigators say it may have been a medical issue that caused the accident.