4(1)This paragraph applies to the construction of any tunnel, subway or other structure authorised by this Act under and within 8 metres of the surface of any highway which comprises a carriageway.
(2)The nominated undertaker must not, without the consent of the highway authority, carry out works to which this paragraph applies except in accordance with plans submitted to, and approved by, the highway authority.
(3)If, within 28 days after such plans have been submitted, the highway authority has not approved or disapproved them, it is deemed to have approved the plans as submitted.
(4)This paragraph does not apply to street works within the meaning of Part 3 of the New Roads and Street Works Act 1991.