The extensive work. if approved by Tynwald members, will mean delays for motorists for over a year as the route, the main road from the west into the capital, is put back into shape.
However there will be a bonus for those on two wheels.
Part of the old road will be recycled and used to give the old railway line from Douglas to Peel a better surface.
Director of Highways Richard Pearson:
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Letters delivered to those affected, says DOI