Work No. 6 – shown on sheet 1 of the works plans and being the construction of a new two-lane carriageway over a length of 160 metres, forming the proposed Silvertown Tunnel southern approach southbound carriageway from the proposed South Portal of the Silvertown Tunnel (Greenwich) to the proposed merge nosing with the improved A102 Blackwall Tunnel southern approach southbound carriageway (Work No. 2), to include—
(a)the construction of a two-lane open-cut carriageway with a retaining wall of varied height in the eastern verge and maintenance access;
(b)the construction of a ground slab beneath the carriageway; and
(c)the construction of a new cross-over facility in the central reservation.