10Not later than the day on which the said notice is published or, if it is published on two more days, the day on which it is first published, the Secretary of State or the local roads authority, as the case may be, shall serve a copy of it (together with a copy of draft scheme or of the scheme, as the case may be, and of any relevant map of plan)—
(a)on the council of every region, islands area and district in whose area any part of the route of the special road, or as the case may be the site of the bridge or tunnel, is situated; and
(b)where the scheme provides for the construction of a bridge over or tunnel under any navigable waters, on every navigation authority or water authority concerned with or having jurisdiction over the waters affected or over the area comprising those waters.