Western Australian Consolidated Acts A road may
have —
(a) a 2
dimensional configuration consisting of —
(i)
length; and
(ii)
width;
or
(b) a 3
dimensional configuration consisting of —
(i)
length;
(ii)
width; and
(iii)
height or depth or both,
as specified in the
relevant plan of survey or sketch plan lodged with the Registrar and may be
situated in airspace or waters or on the surface of or below the ground
(including the bed of waters) or in any combination of 2 or more of these
situations.