This left SR 146 in two separate segments. The eastern segment of SR 146 was reassigned to SR 564 by 2002. I-215 from SR 146 to SR 564's western terminus was completed in October 2005.
The separation of SR 146 into two parts led to a reassignment of the eastern segment to SR 564 and the completion of I-215 connecting the western portion of SR 146 to SR 564's western terminus.