and previously http://road.cc/content/news/196730-ligh ... ycle-route
Here's the T&A article but you need to fill in a survey!
http://www.thetelegraphandargus.co.uk/n ... st___2_8m/So it would appear that a report/findings by Jacobs Engineering estimated the cost to make the tunnel useable/safe for cycling and walking at £35M. This was funded/commissioned by the Historical Railways Estate (HRE) and that original report presented to former Transport minister, Robert Goodwill, who then decided renovation was too expensive
Filling it in with various materials is going to cost £3m.
However, a subsequent report by the people whom wish to keep the tunnel open suggest from their findings/experts it'll only be £2.8M to make it navigable/safe for people on bikes/foot.
Would be the longest tunnel in Europe dedicated to such. Seems a worthwhile venture if the money is earmarked to fill in is used to actually keep it open!
