Interestingly coincidentally Australia has started decommissioning 181 navaids across the country. (VOR’s and NDB’s).
The FAA has begun to remove half of the VORs in the NAS USA. Eventually VORs will be backups to GNSS RNAV.
http://www.flyingmag.com/news/faa-begins-vor-decommissioning-program?cmpid=enews120115
