Where a highway authority have prescribed an improvement line in relation to any street under section 73 above they may acquire any land, not occupied by buildings, lying between the improvement line and the boundary of the street.
Any land acquired under this section shall, at such time or times as the highway authority may determine, be added to and made good as part of the street by the authority, and until it is so added the occupier of the land from which it is severed, and other persons with his permission, are entitled to reasonable access across the land so acquired to and from the street, and have the same rights in regard to the laying, altering, maintaining and removal of sewers, drains, mains, pipes or electric lines in that land as if it were already part of the street.
Subsection (11) of section 73 above has effect in relation to this section as it has effect in relation to that section.