Deletion of New Zealand State Highway 21

Comment: the government has gone to the trouble to maintain and designate this roadway as a state highway, a status that sets it apart from many other roads. Merging this back to the most appropriate target, the list of other highways in the system would cause size issues, meaning splitting it into its own article is appropriate on  and  grounds
Stance: keep
Cited policy: Wikipedia:Article size (WP:SIZE||WP:UNDUE)