Upon the payment of the sum assessed as damages to the persons to whom it shall be awarded or a tender of the sum to them, the person petitioning is entitled to the right-of-way requested in the petition and may immediately proceed to occupy the right-of-way and erect works and structures and conduct excavations in the right-of-way as may be necessary to the use and enjoyment of the right-of-way.
SDCL 45-5-6