'Scheme-long overdue' says Harmer
Regeneration works on Douglas Promenade will also include a full overhaul of gas, electricity, and telecoms networks.
Utilities providers are being urged to use the projected three-year timeframe to carry out their own maintenance while the Department of Infrastructure is digging up the roadway.
It's in order to avoid the need for further disruption after 2021.
Work on Douglas Promenade is set to get underway this September - but it is still yet to be decided where the project will begin.
Infrastructure Minister Ray Harmer says the works are long overdue:
Tynwald to revisit rates bill after the election
'Significant work' needed to reduce people entering criminal justice system
Third candidate declares for Douglas North
Tourism professional calls for prisoners to clear footpaths
Southern 100 Memorial Service being held today