§ 55. Mr. BoatengTo ask the Secretary of State for Transport what is the average cost per mile of dual carriageway building in the Greater London area.
§ Mr. Peter BottomleyMajor road improvements in London are aimed primarily at easing or eliminating severe congestion points. They often involve new junctions and structures rather than significant lengths of new carriageway. It is not possible to calculate an overall average cost per mile.
The five most recent trunk road schemes which have been completed or are currently under construction are as follows:
Scheme cost £ million Length miles Cost per mile £ million Completed schemes A20 Sidcup by-pass (opened November 1987) 48.1 3.853 12.48 A406 South Woodford to Barking relief road (opened December 1987) 92.8 6.5 14.28 A2 Rochester Way relief road (opened April 1988—former GLC scheme) 84.6 3.4 24.75 Schemes under construction A406/A10 Great Cambridge road junction 26.1 — — A40 Swakeleys road GSJ 12.5 — —