HC Deb 11 June 1973 vol 857 cc238-9W
Mr. Cockeram

asked the Secretary of State for the Environment what is the estimated cost and economic rate of return on the proposed extension in a westerly direction of the M56 motorway.

Mr. Speed

This scheme has been evaluated by the COBA (cost benefit analysis) method. The first year rate of return, comparable to the former ERR, is 19.1 per cent. The present estimated cost is £9¼ million.