The A18 Mountain Road will be closed between 28 February and 15 April.
Work includes the reconstruction of the highway and footpath at Stella Maris, line painting, surface repairs and the installation of TT signage.
The government said the six-week schedule requires the following road closures:
- Monday 28 February, to no later than Friday 15 April: full closure between Ramsey and the Bungalow.
- Monday 4 April, to no later than Friday 15 April: daytime closures to facilitate commuter traffic, closures will be from 9.15am to 4pm Monday to Friday, between the Bungalow and Creg-ny-Baa.
Infrastructure Minister Tim Crookall said: " These works are necessary to ensure the highway continues to be fit for purpose.
"The work is also necessary to ensure that this year’s TT races can go ahead.
"The feedback from the public has been invaluable in identifying a schedule that reduces disruption for residents and businesses by completing a range of different jobs at the same time".
Access will be retained to Snaefell and the Victory Café via Tholt-y-Will Road (for the duration of the works) and via Hillberry (except during the April closures).
Access to the Creg-Ny-Baa Hotel from Douglas via Hillberry and the Creg Ny Baa Back Road will be unaffected.
It will also be accessible from the Tholt Y Will/Bungalow route (except during the April Closures).
Reminder that the Mountain Road is now closed for essential maintenance until 15th April. pic.twitter.com/DLZCxF67Ul
— TweetbeatIOM #RespectIOM (@TweetbeatIOM) February 28, 2022
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