Miss. Code § 11-27-45
All companies, or associations of persons incorporated or organized for the purposes set forth in Section 11-27-41 may acquire a right-of-way across railroads by condemnation by the exercise of such right of eminent domain. If a right-of-way across a railroad has been condemned by a hydroelectric company, as herein defined, the railroad company shall be advised of the manner in which said hydroelectric company proposes to erect its poles and string its wires and conductors, and if the railroad company shall object thereto, the public service commission shall have jurisdiction upon complaint filed with it by the railroad company to enter an order directing how the poles, wires and conductors shall be constructed, and the railroad shall be crossed as ordered and in no other manner.
Miss. Code § 11-27-45