Channel Tunnel Act 1987

5(1)The Secretary of State may, for the purpose of constructing or maintaining the A20 improvement works, temporarily stop up, open, break up or interfere with, or alter or divert, the whole or any part of any highway within the limits of deviation for the works authorised by Part IV of this Act or the limits of land to be acquired, and may carry out and do all necessary works and things for, or in connection with, the stopping up, opening, breaking up, interference, alteration or diversion and for keeping the highway open for traffic.U.K.

(2)The Secretary of State shall provide reasonable access for all persons, with or without vehicles, going to or returning from premises abutting on any highway affected by the exercise of the powers conferred by this paragraph.