Following the announcement of the Preferred Route in July 2009, the scheme design was developed to take on board comments from landowners as well as more detailed information including Ground Investigation, Drainage Surveys and Flood Modelling. Input from the appointed contractors also contributed to the design development.
As a result of the additional information becoming available, a number of alternatives were considered. This paper presents a comparison of the alternatives that were adopted on the basis that they compared favourably when assessed against the 5 key criteria of Safety, Economics, Environment, Integration and Accessibility.