The Department of Infrastructure says it's hoping to reopen the Mountain Road a day late after weather delayed work.
Part of the route's been shut since last week while workers prepare it for this year's TT festival, and was due to reopen on Friday, April 17.
However, the DOI says extended torrential rain has disrupted resurfacing, which it's now hoped will be finished on Friday.
Subject to weather, the department says it's now aiming to fully reopen the road on Saturday afternoon.
Okells makes it a double at beer awards
Organisers call off 11-hour music event next weekend
Plans lodged for quayside hotel and apartments in Peel
£5,000 fundraiser launched for Buddy's surgery
Cruise ship makes Island stopoff
Parents warned over school run parking and driving
Lord Street redevelopment case back in court
DEFA releases figures on leased land