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:
'Deterrent' sentence imposed for ketamine importer
23-year-old Liverpool man jailed for 22 months
Several sailings at risk or cancelled due to adverse weather
Heysham crossing off today and four in doubt tomorrow
Glencrutchery Road to close to northbound traffic
Manx Utilities carrying out emergency repairs on burst water main
MHK's shock over Hospice announcement
Dr Alex Allinson to quiz health minister over charity's funding
Sulby Straight closure in place this weekend
Tree felling works to take place