§ Mr. Hicks
asked the Secretary of State for Transport what are the latest estimated comparative costs of the proposed A38 trunk road improvements, Tamar Bridge-Cutlers Corner, Saltash section, of a single carriageway tunnel, a dual carriageway tunnel and to widen the existing road to make a dual carriageway.
§ Mrs. Chalker
The estimated costs of a tunnel section are:
Carriageway width in tunnel Estimated cost £ million (June 1982 prices) Single 7.3 metres 4.3 Single 10.0 metres 5.8 Dual 7.3 metres 8.6
We have no comparable costs of dualling the existing road. The destruction of property and damage to the environment from retaining trunk road traffic through the urban area would be unacceptable.