All streets, alleys, public ways, waterways and railroad rights of way, if not otherwise specifically designated, shall be deemed to be in the same zone as the property immediately abutting upon such alleys, streets, public ways or waterways and railroad rights of way. Where the center line of a street, alley, public way, waterway or railroad right of way serves as a district boundary, the zoning of such areas, unless otherwise specifically designated, shall be deemed to be the same as that of the abutting property up to such center line. (Ord. 1979-7, 6-25-79)