12.—(1) Subject to the provisions of this article, the highway specified in column (2) of Schedule 2 (redesignation of highways), on the completion of the authorised works relevant to that highway, ceases to be a highway of the description specified on the definitive map and statement as specified in column (3) and is to be designated as a highway as described in column (4) of Schedule 2.
(2) Where a highway has been redesignated, the redesignation is to have effect as if that highway had been stopped up and immediately redesignated as described in column (4) of Schedule 2.
(3) Expressions used in this article and in the Wildlife and Countryside Act 1981(1) have the same meaning in this article as in that Act.