No yards allocated to a building, structure or use existing on the effective date of the ordinance codified in this chapter shall be subsequently reduced or further reduced below the yard requirements of this chapter, except a yard adjoining a street may be reduced in depth in the event and to the extent the right-of-way width of such street adjoining such yard is subsequently increased.
(Ord. 1999-2, Zoning § 3, subs. .080, passed 2-15-1999)  Penalty, see § 155.999