LUDLOW An Arizona woman died on Interstate 40 near Ludlow Tuesday afternoon after her car struck a rock wall.

According to a coroner's report, Martha Sanford, 77, from Fort Mohave, died when the 2007 Dodge 300 she was driving swerved, went into the center median, and struck a rock wall at 2:20 p.m.. Emergency personnel pronounced Sanford dead at the scene.

The California Highway Patrol is investigating the crash.