http://www.bbc.co.uk/news/uk-england-essex-22795363
Looks like the government are considering this which would be a major engineering project in the local area. Could be a real boost to the local area but obviously there will be concerns I assume around cost and environmental impact. Another issue is will this be completely financed by the tax payer or will it be financed privately and therefore there would be a toll to recoup costs.