(1) For the purposes of this part, the authority may acquire private or public property and property rights, including rights of access, air, view, and light, by gift, devise, purchase, or condemnation by eminent domain proceedings, as the authority may deem necessary. The right of eminent domain herein conferred shall be exercised by the authority in the manner provided by law.
(2) In connection with the acquisition of property or property rights as herein provided, the authority may, in its discretion, acquire an entire lot, block, or tract of land if, by so doing, the interests of the public will be best served, even though the entire lot, block, or tract is not immediately needed for the right-of-way proper.
