Ballanard Road in Douglas will re-open to traffic by 4.30pm today (Friday).
The Department of Infrastructure said that the road and footway reconstruction works between Glencrutchery Road traffic lights and Norwood Drive had now been completed and the works to the side roads would be finished early next week.
Further footway works between Barrule Road and Norwood Drive will continue through the Manx Grand Prix period with temporary traffic lights with carriageway resurfacing works starting in early September.
A spokesman said: ‘Helped by the generally good weather and focussed work effort, the scheme is ahead of programme and it is expected that the works will be completed by mid October approximately one month ahead of the original programme.
‘The department would like to thank motorists and residents for their ongoing patience and co-operation during the final stages of this project. If you have any concerns or queries regarding these works, please phone 850000.’