Andrew Rance, 59, of Richmond, has been identified as the motorcyclist who died in a crash Saturday night east of Mt. Diablo, authorities said.
Rance reportedly crashed about 11:22 p.m. in the area of 4940 Morgan Territory Road, according to the California Highway Patrol.
It appeared Rance’s bike left the roadway for the dirt shoulder, where he lost control and struck a metal drainage culvert. Though he was wearing a full-face helmet at the time of the crash, he was pronounced dead at the scene.
The crash remains under investigation, CHP officials said.
Anyone with information about the crash or events leading up to it can reach CHP at (925) 646-4980.
Bay City News contributed to this report