26.—(1) Where any part of any highway has been broken up or disturbed by the undertaker and not permanently stopped up or diverted, the undertaker must make good the subsoil, foundations and surface of that part of the highway to the reasonable satisfaction of the relevant highway authority, and must maintain the same to the reasonable satisfaction of the relevant highway authority for such time as may reasonably be required for the permanent reinstatement of the highway. No such works may take place except with the consent of the relevant highway authority.
(2) The reinstatement of that part of the highway must be carried out by the undertaker to the reasonable satisfaction of the relevant highway authority in accordance with such requirements as to specification of material and standards of workmanship as may be prescribed for equivalent reinstatement work by regulations made under section 71 of the 1991 Act.